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112篇 您的检索式:作者名="Lijuan Jiang"
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1Finding of ancient materials in Cathaysia and implication for the formation of Precambrian crust显示文摘在 Nanxiongarea 从帕拉片麻岩为 56 由岩屑形成的锆石标明日期的 U-Pb,北广东省,显示在 Cathaysiahinterland 的最近的 Neoproterozoic 沉积由众多的 Grenvillian 和 Neoarchaean 组成碎屑状的材料,以及 someMesoproterozoic 岩屑。次要的 Paleoarchaean (3.76 Ga ) 和 Mesoarchaean (3.0—3.2 Ga ) 锆石,是在华南的最旧的锆石,第一也在沉积被发现,建议卡赛西亚·布洛克可以包含很旧的材料。thirty-sevenzircons 的 Hf 同位素作文表明这些碎屑状的材料有不同起源。次要的锆石从产生从的岩浆结晶相对少年外壳,当大多数锆石的父母岩浆从古老的外壳被导出时。U-Pb 标明日期和这些锆石的 Hf 同位素分析的集成建议在 Cathaysia 块的少年外壳的产生主要发生在 2.5 点—2.6Ga。Mesoarchaean (3.0—3.3 Ga ) ,迟了的 Paleoproterozoic (~ 1 .8 Ga ) 和 Paleoarchaean (~ 3 .7 Ga ) 可以也是外壳的生长的重要事件。Grenvillian magmatism 是极其强烈的,但是它主要涉及与少年外壳的很少形成古老的外壳的部件再循环。~ 2 .1 Ga Hf 模型年龄的 Themarked 存在和有结晶化的锆石的缺席在~ 2 .1 Ga 变老建议许多锆石的父母岩浆可能从由 Neoarchaean 和迟了的 Paleoproterozoic 材料组成的混合来源被导出。YU JinHai Y S O'REILLY WANG LiJuan W L GRIFFIN JIANG ShaoYong WANG RuCheng XU XiSheng 2007Chinese Science Bulletin2007,52,1:47
2Trends in cancer mortality in China from 2004 to 2018:A nationwide longitudinal study显示文摘Background:The long-term trend in cancer death in a rapidly developing country provides information for cancer prophylaxis.Here,we aimed to identify the trends in cancer mortality in China during the 2004-2018 period.Methods:Using raw data from the national mortality surveillance system of China,we assessed the mortalities of all cancer and site-specific cancers during the 2004-2018 period.The participants were divided into three age groups:≥65 years,40-64 years,and≤39 years.Changing trends in cancer death by gender,residency,and tumor location were estimated using fitting joinpoint models to log-transformed crude mortality rates(CMRs)and age-standardizedmortality rates(ASMRs).Results:Cancer death accounted for 24% of all-cause of death in China during 2014-2018.The CMR of all cancer was 150.0 per 100,000 persons.Cancer was the leading cause of death in the population<65 years.The six major cancer types(lung/bronchus cancer,liver cancer,stomach cancer,esophagus cancer,colorectal cancer,and pancreas cancer)accounted for 75.85% of all cancer deaths.The CMR of all cancer increased while the ASMR decreased during 2014-2018(P<0.001).Lung/bronchus cancer and liver cancer were the leading causes of cancer death in the population<65 years,accounting for 45.31%(CMR)and 44.35%(ASMR)of all cancer death,respectively.The ASMR of liver cancer was higher in the 40-64 years population than in the≥65 years population,in contrast to the other five major cancers.The ASMRs of liver cancer,stomach cancer,and esophagus cancer decreased although they were higher in rural residents than in urban residents;the ASMRs of lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents although they were higher in urban residents than in rural residents during 2014-2018.Conclusion:Although the ASMR of all cancer decreased in China during 2004-2018,lung/bronchus cancer and liver cancer remained the leading causes of cancer-related premature death.Lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents.Dongming Jiang Lijuan Zhang Wenbin Liu Yibo Ding Jianhua Yin Rongbing Ren Qi Li Yifan Chen Jiaying Shen Xiaojie Tan Hongwei Zhang Guangwen Cao 2021Cancer Communications2021,41,10:23
3Grenvillian orogeny in the Southern Cathaysia Block:Constraints from U-Pb ages and Lu-Hf isotopes in zircon from metamorphic basement显示文摘Metamorphic basement rocks in the Cathaysia Block are composed mainly of meta-sediments with different ages. New zircon U-Pb geochronological results from the meta-sedimentary rocks exposed in the Zengcheng and Hezi areas, southern Cathaysia Block, show that they consist dominantly of early Neoproterozoic (1.0―0.9 Ga) materials with minor Paleo- to Mesoproterozoic and late Neoproterozoic (0.8―0.6 Ga) components, suggesting that the detritus mostly come from a Grenvillian orogen. The youngest detrital zircon ages place a constraint on the deposition time of these sediments in Late Neoproterozoic. Zircon Hf isotopic compositions indicate that the Grenvillian zircons were derived from the reworking of Mesoproterozoic arc magmatic rocks and Paleoproterozoic continental crust, implying an arc-continent collisional setting. Single-peak age spectra and the presence of abundant euhedral Grenvillian zircons suggest that the sedimentary provenance is not far away from the sample location. Thus, the Grenvillian orogen probably preexisted along the southern margin of the Cathaysia Block, or very close to the south. Similarity in the ages of Grenvillian orogeny and the influence of the assembly of Gondwana in South China with India and East Antarctic are discussed, with suggestion that South China was more likely linked with the India-East Antarctica continents in Early Neoproterozoic rather than between western Laurentia and eastern Australia.WANG LiJuan YU JinHai S.Y. O'REILLY W.L. GRIFFIN SUN Tao WEI ZhenYang JIANG ShaoYong SHU LiangShu 2008Chinese Science Bulletin2008,53,19:21
4Comparative study of microbial community structure in different filter media of constructed wetland显示文摘Comparisons of microbial community structure, in eight filter media of zeolites, anthracite, shale, vermiculite, ceramic filter media, gravel, steel slag and bio-ceramic, were undertaken by analyzing the phospholipid fatty acid (PLFA) composition. A total of 20 fatty acids in the range of C11 to C20 were determined but only 13 PLFAs were detected in steel slag. They consist of saturated fatty acids, branched fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids. The variation of fatty acids was revealed in the relative proportions of these fatty acids in different media. The aerobic prokaryotes were the predominant group in all media. The PLFA composition showed significant differences among the eight different media by Tukey's honestly test. It was found that steel slag was significantly different in the microbial community as compared to other filter media, probably due to its alkaline efluent. Steel slag alone is probably not a good choice of substratum in constructed wetlands. The principle components analysis (PCA) showed that zeolites, bio-ceramic, shale and vermiculite had a similar microbial community structure while steel slag and ceramic filter media were distinct from other media.Ming Li Qiaohong Zhou Min Tao Ying Wang Lijuan Jiang Zhenbin Wu 2010Journal of Environmental Sciences2010,22,1:14
5miR-23a/b regulates the balance between osteoblast and adipocyte differentiation in bone marrow mesenchymal stem cells显示文摘Age-related osteoporosis is associated with the reduced capacity of bone marrow mesenchymal stem cells(BMSCs) to differentiate into osteoblasts instead of adipocytes. However, the molecular mechanisms that decide the fate of BMSCs remain unclear. In our study, micro RNA-23 a, and micro RNA-23b(mi R-23a/b) were found to be markedly downregulated in BMSCs of aged mice and humans. The overexpression of mi R-23a/b in BMSCs promoted osteogenic differentiation, whereas the inhibition of mi R-23a/b increased adipogenic differentiation. Transmembrane protein 64(Tmem64), which has expression levels inversely related to those of mi R-23a/b in aged and young mice, was identified as a major target of mi R-23a/b during BMSC differentiation. In conclusion, our study suggests that mi R-23a/b has a critical role in the regulation of mesenchymal lineage differentiation through the suppression of Tmem64.Qi Guo Yusi Chen Lijuan Guo Tiejian Jiang Zhangyuan Lin 2016Bone Research2016,4,2:12
6Separate Neural Networks for Gains and Losses in Intertemporal Choice显示文摘An important and unresolved question is how human brain regions process information and interact with each other in intertemporal choice related to gains and losses. Using psychophysiological interaction and dynamic causal modeling analyses, we investigated the functional interactions between regions involved in the decisionmaking process while participants performed temporal discounting tasks in both the gains and losses domains. We found two distinct intrinsic valuation systems underlying temporal discounting in the gains and losses domains:gains were specifically evaluated in the medial regions,including the medial prefrontal and orbitofrontal cortices,and losses were evaluated in the lateral dorsolateral prefrontal cortex. In addition, immediate reward or punishment was found to modulate the functional interactions between the dorsolateral prefrontal cortex and distinct regions in both the gains and losses domains: in the gains domain, the mesolimbic regions; in the losses domain, the medial prefrontal cortex, anterior cingulate cortex, and insula. These findings suggest that intertemporal choice of gains and losses might involve distinct valuation systems,and more importantly, separate neural interactions may implement the intertemporal choices of gains and losses.These findings may provide a new biological perspective for understanding the neural mechanisms underlying intertemporal choice of gains and losses.Yang-Yang Zhang Lijuan Xu Zhu-Yuan Liang Kun Wang Bing Hou Yuan Zhou Shu Li Tianzi Jiang 2018Neuroscience Bulletin2018,34,5:6
7Development and utilization of a new chemically-induced soybean library with a high mutation density显示文摘Mutagenized populations have provided important materials for introducing variation and identifying gene function in plants. In this study, an ethyl methanesulfonate(EMS)-induced soybean(Glycine max) population,consisting of 21,600 independent M_2 lines, was developed.Over 1,000 M_(4(5))families, with diverse abnormal phenotypes for seed composition, seed shape, plant morphology and maturity that are stably expressed across different environments and generations were identified. Phenotypic analysis of the population led to the identification of a yellow pigmentation mutant, gyl, that displayed significantly decreased chlorophyll(Chl) content and abnormal chloroplast development. Sequence analysis showed that gyl is allelic to Minn Gold, where a different single nucleotide polymorphism variation in the Mg-chelatase subunit gene(ChlI1a) results in golden yellow leaves. A cleaved amplified polymorphic sequence marker was developed and may be applied to marker-assisted selection for the golden yellow phenotype in soybean breeding. We show that the newly developed soybean EMS mutant population has potential for functional genomics research and genetic improvement in soybean.Zhongfeng Li Lingxue Jiang Yansong Ma Zhongyan Wei Huilong Hong Zhangxiong Liu Jinhui Lei Ying Liu Rongxia Guan Yong Guo Longguo Jin Lijuan Zhang Yinghui Li Yulong Ren Wei He Ming Liu Nang Myint Phyu Sin Htwe Lin Liu Bingfu Guo Jian Song Bing Tan Guifeng Liu Maiquan Li Xianli Zhang Bo Liu Xuehui Shi Sining Han Sunan Hua Fulai Zhou Lili Yu Yanfei Li Shuang Wang Jun Wang Ruzhen Chang Lijuan Qiu 2017Journal of Integrative Plant Biology2017,59,1:6
8Efficacy and safety of repetitive transcranial magnetic stimulation for generalised anxiety disorder: A metaanalysis显示文摘Background Pharmacological and conventional nonpharmacological treatments are only moderately effective in treatingeneralised anxiety disorder(GAD).Recently,repetitive transcranial magnetic stimulation(rTMS)has attracted interest because of its potential therapeutic value.Aim To investigate the efficacy and safety of rTMS treatment for GAD.Methods Literature studies published in English or Chinese were screened in 10 electronic databases up to 5 December 2018.The included studies'bias risk was assessed using Cochrane risk of bias assessment tool.Meta-analysis was performed to compute the standardised mean difference(SMD)and risk ratio(RR)along with its 95%Cis through using RevMan V.5.3.Heterogeneity was inspected by I2 and the χ2 test.We performed subgroup analysis and meta-regression to investigate heterogeneity.We used funnel plot to assess publication bias.We used the GRADE approach to assess the whole quality of evidence.Results Twenty-one studies,with a total sample size of 1481,were analysed.The risk of bias in most studies included is moderate,the majority of which are lacking of blinding methods of treatment allocation.The treatment had beneficial effects in the rTMS group compared with the control group in mean anxiety score(SMD=-0.68;95%Cl-0.89 to-0.46).None of the 21 studies included here reported severe adverse events.As for dropout rates,there are no statistically significant differences between the two groups(RR 1.14,95%Cl 0.72 to 1.82)or adverse events(RR 0.95,95%Cl 0.77 to 1.18).No particular influence on the heterogeneity of any variable was observed.The risk of publication bias was low.According to the GRADE approach,the evidence levels of primary outcome(treatment effects)and secondary outcomes(acceptability and safety)were rated as‘medium’.Conclusion The use of rTMS combined with medication treatment may have a significant positive anti-anxiety effect on patients with GAD.However,we should interpret the results cautiously due to the relatively high heterogeneity of the meta-analysis.Future high-quality clinical trials are needed to confirm our results.Huiru Cui Lijuan Jiang Yanyan Wei Wei Li Hui Li Junjuan Zhu Jiaoyan Pang Jijun Wang Chunbo Li 2019General Psychiatry2019,32,5:5
9Genetic contribution of foreign germplasm to elite Chinese soybean (Glycine max) cultivars revealed by SSR markers显示文摘Simple sequence repeats (SSR) marker analysis, combined with pedigree analysis, was car- ried out to trace the genetic constitutes of Suinong 14 and Hefeng 25 in assessing the contribution of for- eign germplasm to those elite cultivars. The overall goal is to accumulate information for further effective utilization of foreign germplasm in Chinese soybean breeding programs. SSR clustering results indicated that the genetic base of elite Chinese soybean culti- vars, including Suinong 14 and Hefeng 25, were broadened and enhanced via introduction of Amsoy from the U.S. and Shishengchangye from Japan. The pedigree analysis showed a very high coefficient of parentage between Shishengchangye and Hefeng 25, between Shishengchangye and Suinong 14, and between Amsoy and Suinong 14. The genetic simi- larity between Suinong 14 and Hefeng 25 was 60.58%. Among 20 linkage groups, more genomic regions were transferred from Hefeng 25 to Suinong 14 in linkage group (LG) I, L and C2 than other LGs. Among the unique alleles of foreign parents, five specific loci in Amsoy were transferred to Suinong 14, and three loci from Shishengchangye to Suinong 14. Some SSR loci were proved to be correlated with phenotypes: two loci for seed size introgressed from Shishengchangye to Suinong 14, and one locus forprotein content from Amsoy to Suinong 14. These results indicate that the two foreign parents might have important contributions in the development of Suinong 14 and Hefeng 25.QIN Jun CHEN Weiyuan GUAN Rongxia JIANG Chengxi LI Yinghui FU Yashu LIU Zhangxiong ZHANG Mengchen CHANG Ruzhen QIU Lijuan 2006Chinese Science Bulletin2006,51,9:4
10Homogeneous label-free fluorescent assay of small molecule-protein interactions using protein binding-inhibited transcription nanomachine显示文摘Quantitative analysis of interactions between small molecules and proteins is a central challenge in chemical genetics, molecular diagnostics and drug developments. Here, we developed a RNA transcription nanomachine by assembling T7 RNA polymerase on a small molecule-labeled DNA heteroduplex. The nanomachine, of which the RNA transcription activity can be quantitatively inhibited by protein binding, showed a great potential for small molecule-protein interaction assay. This finding enabled us to develop a novel homogeneous label-free strategy for assays of interactions between small molecules and their protein receptors. Three small molecule compounds and their protein receptors have been used to demonstrate the developed strategy. The results revealed that the protein-small molecule interaction assay strategy shows dynamic responses in the concentration range from 0.5 to 64 nM with a detection limit of 0.2 nM. Due to its label-free, homogeneous, and fluorescence-based detection format, besides its desirable sensitivity this technique could be greatly robust, cost-efficient and readily automated, implying that the developed small molecule-protein interaction assay strategy might create a new methodology for developing intrinsically robust, sensitive and selective platforms for homogeneous protein detection.ZHOU DianMing, WU YiDan, LIU Pei, BAI HaoTian, TANG LiJuan, YU RuQin & JIANG JianHui State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China 2011Science China Chemistry2011,54,8:4
11Effect of pH,fulvic acid and temperature on the sorption of uranyl on ZrP_2O_7显示文摘The sorption of UO22+ onto ZrP2O7 was studied using the batch technique and the point of zero charge of ZrP2O7 was obtained through mass titration.The results indicated that sorption of UO22+ onto ZrP2O7 was strongly affected by pH,solid-to-liquid ratio (m/V),the species of electrolyte in solution and fulvic acid (FA),but was insensitive to ionic strength.The sorption of UO22+ increased with increasing pH and m/V.The presence of FA enhanced UO22+ sorption onto ZrP2O7 at low pH.The presence of phosphate or sulfate caused opposite effects on the sorption of UO22+ onto ZrP2O7.Addition of citrate also significantly affected UO22+ sorption.The sorption of UO22+ increased as the temperature of the system increased.The Langmuir and Freundlich models were used to simulate the sorption isotherms of UO22+ onto ZrP2O7 at different temperatures.The results indicated that the Freundlich model described UO22+ sorption better than the Langmuir model.Thermodynamic parameters for the sorption process were calculated from the temperature dependent sorption isotherms.The results suggested that the sorption process of UO22+ onto ZrP2O7 is spontaneous and endothermic.The desorption process of UO22+ from ZrP2O7 was also investigated and it was found that sorption onto ZrP2O7 was irreversible.QIAN LiJuan,HU PeiZhuo,JIANG ZhenJiang,GENG YanXia & WU WangSuo Radiochemistry Laboratory,School of Nuclear Science and Technology,Lanzhou University,Lanzhou 73000,China 2010Science China Chemistry2010,53,6:4
12Spatially precise reconstruction of cropland areas in Heilongjiang Province, northeast China during 1900-1910显示文摘It is necessary to reconstruct past changes in land use and land cover to understand the historical effects of humans on climate and the local environment. We collected information from historical documents on the cropland area at the county level for Heilongjiang Province, northeast China during 1900–1910. The original records from different historical documents were calibrated with each other. We then defined an agricultural suitability index quantified by the distance from settlements, the slope and complexity of the topography, and the distance from rivers. Following the order of the agricultural suitability index from high to low values, the documented areas of cropland at the county level were then allocated into 1 km×1 km cells. The area of cropland in 2009 was then retrieved from Landsat ETM+ images and compared with the areas of cropland during 1900–1910 to determine the human-induced changes in land use and land cover. In this period, the total area of cropland was about 25,397 km2 and this mainly occurred in the mid-southern part of Heilongjiang, in particular the six counties of Hailun, Bayan, Wuchang, Hulan, Shuangcheng and Wangkui. In 2009, the total area of cropland had increased to about 163,808 km2 and had spread over the southwestern part to the central and northeastern parts of Heilongjiang. The area of cropland had therefore increased by about 138,411 km2 during the 20 th century. The proportion of land used as cropland increased from about 5.6% during 1900–1910 to about 36.2% in 2009, indicating that about 30.6% of the natural land surface in Heilongjiang was replaced by cropland. A total of about 44%(60,962 km2) of the cropland was converted from forest, mainly on the western edge and in the northeastern part of the present-day agricultural area. These areas of cropland reconstructed from historical records for the period 1900–1910 could be used as a basic data set to study the effects of agricultural development on climate and the local environment.ZHANG Lijuan JIANG Lanqi ZHANG Xuezhen 2015Journal of Geographical Sciences2015,25,5:4
13CRA-40/Atmosphere—The First-Generation Chinese Atmospheric Reanalysis(1979–2018):System Description and Performance Evaluation显示文摘Atmospheric reanalysis reproduces the past atmospheric conditions through assimilation of historical meteorological observations with fixed version of a numerical weather prediction(NWP)model and data assimilation(DA)system.It is widely used in weather,climate,and even business-related research and applications.This paper reports the development of CMA’s first-generation global atmospheric reanalysis(RA)covering 1979–2018(CRA-40;CRA refers to CMA-RA).CRA-40 is produced by using the Global Spectral Model(GSM)/Gridpoint Statistical Interpolation(GSI)at a 6-h time interval and a TL574 spectral(34-km)resolution with the model top at 0.27 hPa.A large number of reprocessed satellite data and widely collected conventional observations were assimilated during the reanalyzing process,including the reprocessed atmospheric motion vector(AMV)products from FY-2C/D/E/G satellites,dense conventional observations(at about 120 radiosonde and 2400 synoptic stations)over China,as well as MWHS-2 and GNSS-RO observations from FY-3C.The reanalysis fitting to observations is improved over time,especially for surface pressure with root-mean-square error reduced from 1.05 hPa in 1979 to 0.8 hPa,and for upper air temperature from 1.65 K in 1979 to 1.35 K,in 2018.The patterns of global analysis increments for temperature,specific humidity,and zonal wind are consistent with the changes in the observing system.Near surface temperature from the model’s 6-h forecast reflects the global warming trend reasonably.The CRA-40 precipitation pattern matches well with those of GPCP and other reanalyses.CRA-40 also successfully captures the QBO and its vertical and temporal development,hemispherical atmospheric circulation change,and moisture transport by the East Asian summer monsoon.CRA is now operationally running in near real time as a climate data assimilation system in CMA.Zhiquan LIU Lipeng JIANG Chunxiang SHI Tao ZHANG Zijiang ZHOU Jie LIAO Shuang YAO Jingwei LIU Minyan WANG Huiying WANG Xiao LIANG Zhisen ZHANG Yan YAO Ting ZHU Zhe CHEN Wenhui XU Lijuan CAO Hui JIANG Kaixi HU 2023Journal of Meteorological Research2023,37,1:4
14Complement C3a activates osteoclasts by regulating the PI3K/PDK1/SGK3 pathway in patients with multiple myeloma显示文摘Objective:Myeloma bone disease(MBD)is the most common complication of multiple myeloma(MM).Our previous study showed that the serum levels of C3/C4 in MM patients were significantly positively correlated with the severity of bone disease.However,the mechanism of C3 a/C4 a in osteoclasts MM patients remains unclear.Methods:The formation and function of osteoclasts were analyzed after adding C3 a/C4 a in vitro.RNA-seq analysis was used to screen the potential pathways affecting osteoclasts,and the results were verified by Western blot,q RT-PCR,and pathway inhibitors.Results:The osteoclast area per view induced by 1μg/m L(mean±SD:50.828±12.984%)and 10μg/m L(53.663±12.685%)of C3 a was significantly increased compared to the control group(0μg/m L)(34.635±8.916%)(P<0.001 and P<0.001,respectively).The relative m RNA expressions of genes,OSCAR/TRAP/RANKL/cathepsin K,induced by 1μg/m L(median:5.041,3.726,1.638,and 4.752,respectively)and 10μg/m L(median:5.140,3.702,2.250,and 5.172,respectively)of C3 a was significantly increased compared to the control group(median:3.137,2.004,0.573,and 2.257,respectively)(1μg/m L P=0.001,P=0.003,P<0.001,and P=0.008,respectively;10μg/m L:P<0.001,P=0.019,P<0.001,and P=0.002,respectively).The absorption areas of the osteoclast resorption pits per view induced by 1μg/m L(mean±SD:51.464±11.983%)and 10μg/m L(50.219±12.067%)of C3 a was also significantly increased(33.845±8.331%)(P<0.001 and P<0.001,respectively)compared to the control.There was no difference between the C4 a and control groups.RNA-seq analysis showed that C3 a promoted the proliferation of osteoclasts using the phosphoinositide 3-kinase(PI3 K)signaling pathway.The relative expressions of PIK3 CA/phosphoinositide dependent kinase-1(PDK1)/serum and glucocorticoid inducible protein kinases(SGK3)genes and PI3 K/PDK1/p-SGK3 protein in the C3 a group were significantly higher than in the control group.The activation role of C3 a in osteoclasts of MM patients was reduced by the SGK inhibitor(EMD638683).Conclusions:C3 a activated osteoclasts by regulating the PI3 K/PDK1/SGK3 pathways in MM patients,which was reduced using a SGK inhibitor.Overall,our results identified potential therapeutic targets and strategies for MBD patients。Fengjuan Jiang Hui Liu Fengping Peng Zhaoyun Liu Kai Ding Jia Song Lijuan Li Jin Chen Qing Shao Siyang Yan Kim De Veirman Karin Vanderkerken Rong Fu 2021Cancer Biology & Medicine2021,18,3:3
15Reconstruction of cropland spatial patterns and its spatiotemporal changes over the 20th century on the Songnen Plain, Northeast China显示文摘We initially estimated the cropland area at county level using local historical documents for the Songnen Plain(SNP)in the 1910s and 1930s.We then allocated this cropland area to grid cells with a size of 1 km×1 km,using a range of cultivation possibilities from high to low;this was based on topography and minimum distances to rivers,settlements,and traffic lines.Cropland areas for the 1950s were obtained from the Land Use Map of Northeast China,and map vectorization was performed with Arc GIS technology.Cropland areas for the1970s,1980s,1990s,2000s,and 2010s were retrieved from Landsat images.We found that the cropland areas were 4.92×104 km^2 and 7.60×10~4 km^2,accounting for 22.8%and 35.2% of the total area of the SNP in the 1910s and 1930s,respectively,which increased to 13.14×10~4 km^2,accounting for 60.9%in the 2010s.The cropland increased at a rate of 1.18×10~4km^2 per decade from the 1910s to 1970s while it was merely 0.285×10~4 km^2 per decade from the 1970s to 2010s.From the 1910s to 1930s,new cultivation mainly occurred in the central SNP while,from the 1930s to 1970s,it was mainly over the western and northern parts.This spatially explicit reconstruction could be offered as primary data for studying the effects of changes in human-induced land cover based on climate change over the last century.ZHANG Lijuan JIANG Lanqi ZHANG Xuezhen 2017Journal of Geographical Sciences2017,27,10:3
16Catalog of Enhanced Geothermal Systems based on Heat Sources显示文摘It is common sense that a deeper well implies higher temperature in the exploration of deep geothermal resources, especially with hot dry rock(HDR) geothermal resources, which are generally exploited in terms of enhanced geothermal systems(EGS). However, temperature is always different even at the same depth in the upper crust due to different heat sources. This paper summarizes the heat sources and classifies them into two types and five sub-types: crustorigin(partial melting, non-magma-generated tectonic events and radiogenic heat production), and mantle-origin(magma and heat conducted from the mantle). A review of global EGS sites is presented related to the five sub-types of heat sources. According to our new catalog, 71% of EGS sites host mantle-origin heat sources. The temperature logging curves indicate that EGS sites which host mantle-origin magma heat sources have the highest temperature. Therefore, high heat flow(>100 m W/m^(2)) regions with mantle-origin magma heat sources should be highlighted for the future exploration of EGS. The principle to identify the heat source is elucidated by applying geophysical and geochemical methods including noble gas isotope geochemistry and lithospheric thermal structure analysis. This analytical work will be helpful for the future exploration and assessment of HDR geothermal resources.KONG Yanlong PAN Sheng REN Yaqian ZHANG Weizun WANG Ke JIANG Guangzheng CHENG Yuanzhi SUN Wenjie ZHANG Chao HU Shengbiao HE Lijuan 2021Acta Geologica Sinica(English Edition)2021,95,6:3
17Wetland Economic Valuation Approaches and Prospects in China显示文摘Ecosystem services valuation seeks to increase the social relevance of ecosystem characteristics, the underlying biological mechanisms that support services, by making the contribution of ecosystems to human well-being explicit. Economic valuation can help management by clarifying the full range of benefits and costs of proposed management actions. In the past two decades, economic valuation of wetland ecosystem services has become one of the most significant scientific priorities for wetland protection. In this paper, we provide an overview of ecosystem services, and summarize the main interdisciplinary approaches to measure and value wetland ecosystem services. We identified four main methodological gaps preventing progress on wetland valuation of ecosystem services in China, which are: 1) confusion on terminology like intermediate and final ecosystem services, 2) lack of ecological production functions to link ecosystem characteristics to final ecosystem services, 3) static valuation making it difficult to evaluate the trade-offs and synergies among ecosystem services, and 4) lack of clear guidance on relating ecological compensation programs to conservation targets. Overcoming these gaps is important to inform wetland compensation mechanisms and conservation policies. We propose future research on wetland ecosystem services in China should be focused on: 1) defining final ecosystem services based on beneficiary preferences and underlying biophysical mechanisms, 2) establishing wetland monitoring programs at specific sites to collect data on final ecosystem service indicators and ecosystem characteristic metrics to create ecological production functions for economic valuation and rescaling techniques, and 3) incorporating wetland ecosystem service values into decision-making processes to inform wetland management.JIANG Bo Christina P.WONG CUI Lijuan OUYANG Zhiyun 2016Chinese Geographical Science2016,26,2:3
18Triggering in-plane defect cluster on MoS_(2) for accelerated dinitrogen electroreduction to ammonia显示文摘Electrochemical nitrogen reduction reaction (eNRR) is an alternative promising manner for sustainable N2 fixation with low-emission. The major challenge for developing an efficient electrocatalyst is the cleaving of the stable Ntriple bondN triple bonds. Herein, we design a new MoS_(2) with in-plane defect cluster through a bottom-up approach for the first time, where the defect cluster is composed of three adjacent S vacancies. The well-defined in-plane defect clusters could contribute to the strong chemical adsorption and activation towards inert nitrogen, achieving an excellent eNRR performance with an ammonia yield rate of 43.4 ± 3 μg h^(−1) mgcat.^(−1) and a Faradaic efficiency of 16.8 ± 2% at −0.3 V (vs. RHE). The performance is much higher than that of MoS_(2) with the edge defect. Isotopic labeling confirms that N atoms of produced NH4+ originate from N2. Furthermore, the in-plane defect clusters realized the alternate hydrogenation of nitrogen in a side-on way to synthesize ammonia. This work provides a prospecting strategy for fine-tuning in-plane defects in a catalyst, and also promotes the progress of eNRR.Wanru Liao Ke Xie Lijuan Liu Xiuyun Wang Yu Luo Shijing Liang Fujian Liu Lilong Jiang 2021Journal of Energy Chemistry2021,30,11:3
19Atmospheric pollution of agriculture-oriented cities in Northeast China: A case in Suihua显示文摘Agriculture-oriented cities in Northeastern China have experienced frequent atmospheric pollution events.Deeper understandings of the pollution characteristics,haze causes and effects of management on local air quality are crucial for conducting integrated management approaches for the sustainable development of agriculture-oriented cities.Taking a typical agriculture-dominant city(i.e.,Suihua)in Northeast China,we analyzed in detail the characteristics and causes of atmospheric pollution and evaluated the straw-burning prohibition using multisource data.The results showed a clear temporal pattern of air quality index(AQI)on an annual scale(i.e.,2015-April 2019),with two typical pollution periods occurring in late autumn and early spring.The large areas of concentrated straw burning at local and regional scales accounted for the first period(i.e.,October and November),while dust emissions and farming disturbances comprised the second period.The interannual variation in pollution periods among these years was large,showing similar trends from 2015 to 2017 and the postponed late-autumn pollution period in 2018.Our evaluation has shown that the prohibition effect of straw burning significantly improved air quality in 2018,with a reduction of 59%±88%in the PM2.5 concentrations in October and November compared to 2015–2017.However,From October to April of the following year,the improvement effect was not significant due to postponement of straw burning to February or March.Our analysis also highlighted the roles of meteorological conditions,Therefore,combined with the promotion of straw utilization,scientifically prescribed burning considering the burning amount and location,meteorological conditions and regional transportation should be implemented.Lili Li Kun Wang Weiwei Chen Qingliang Zhao Lijuan Liu Wei Liu Yang Liu Junqiu Jiang Jiumeng Liu Mengduo Zhang 2020Journal of Environmental Sciences2020,32,11:3
20Can we early diagnose metabolic syndrome using brachial-ankle pulse wave velocity in community population?显示文摘Li Xin Zheng Liang Wu Juanli Ma Yunsheng Masanori Munakata Oleski Jessica Zhang Lijuan Wo Da Wang Jingsong Jiang Qiaoyu Zou Liling Liu Xuebo Li Jue 2014Chinese Medical Journal2014,,17:3
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