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| 1 | Simulation on the dynamics of forest area changes in Northeast China显示文摘There is plenty of forests in Northeast China which contributes a lot to the conservation of water and land resources, produces timber products, and provides habitats for a huge number of wild animals and plants. With changes of socio-economic factors as well as the geophysical conditions, there are dramatic changes on the spatial patterns of forest area. In this sense, it is of great significance to shed light on the dynamics of forest area changes to find the underlining reasons for shaping the changing patterns of forest area in Northeast China. To explore the dynamics of forest area change in Northeast China, an econometric model is developed which is composed of three equations identifying forestry production, conversion from open forest to closed forest and conversion from other land uses to closed forest so as to explore the impacts on the forest area changes from demographic, social, economic, location and geophysical factors. On this basis, we employ the Dynamics of Land System (DLS) model to simulate land-use conversions between forest area and non-forest cover and the land-use conversions within the sub-classes of forest area for the period 2000–2020 under business as usual scenario, environmental protection scenario and economic growth scenario. The simulation results show that forest area will expand continuously and there exist various kinds of changing patterns for the sub-classes of forest area, for example, closed forest will expand continuously and open forest and shrub will decrease a little bit, while area of other forest will keep intact. The research results provide meaningful decision-making information for conserving and exploiting the forest resources and making out the planning for forestry production in the Northeast China region. | DENG Xiangzheng JIANG Qun'ou ZHAN Jinyan HE Shujin LIN Yingzhi | 2010 | Journal of Geographical Sciences2010，20，4： | 11 |
| 2 | Seasonal Variations in Phytoplankton Community Structure in the Sanggou,Ailian,and Lidao Bays显示文摘The seasonal variations in phytoplankton community structure were investigated for the Sanggou Bay(SGB) and the adjacent Ailian Bay(ALB) and Lidao Bay(LDB) in Shandong Peninsula, eastern China. The species composition and cell abundance of phytoplankton in the bay waters in spring(April 2011), summer(August 2011), autumn(October 2011), and winter(January 2012) were examined using the Utermhl method. A total of 80 taxa of phytoplankton that belong to 39 genera of 3 phyla were identified. These included 64 species of 30 genera in the Phylum Bacillariophyta, 13 species of 8 genera in the Phylum Dinophyta, and 3 species of 1 genus in the Phylum Chrysophyta. During the four seasons, the number of phytoplankton species(43) was the highest in spring, followed by summer and autumn(40), and the lowest number of phytoplankton species(35) was found in winter. Diatoms, especially Paralia sulcata(Ehrenberg) Cleve and Coscinodiscus oculus-iridis Ehrenberg, were predominant in the phytoplankton community throughout the study period, whereas the dominance of dinoflagellate appeared in summer only. The maximum cell abundance of phytoplankton was detected in summer(average 8.08 × 103 cells L-1) whereas their minimum abundance was found in autumn(average 2.60 × 103 cells L-1). The phytoplankton abundance was generally higher in the outer bay than in the inner bay in spring and autumn. In summer, the phytoplankton cells were mainly concentrated in the south of inner SGB, with peak abundance observed along the western coast. In winter, the distribution of phytoplankton cells showed 3 patches, with peak abundance along the western coast as well. On seasonal average, the Shannon-Wiener diversity indices of phytoplankton community ranged from 1.17 to 1.78(autumn > summer > spring > winter), and the Pielou's evenness indices of phytoplankton ranged from 0.45 to 0.65(autumn > spring > summer > winter). According to the results of canonical correspondence analysis, phosphate level was the major factor that limited the occurrence of P. sulcata and C. oculus-iridis, whereas optimal temperature and low salinity were responsible for Prorocentrum blooms in summer. The detailed description of seasonal variations in phytoplankton community structure in the three bays provide reference data for future studies on marine ecosystems and mariculture in adjacent areas. | YUAN Mingli ZHANG Cuixia JIANG Zengjie GUO Shujin SUN Jun | 2014 | Journal of Ocean University of China2014，13，6： | 9 |
| 3 | Phytoplankton communities and its controlling factors in summer and autumn in the southern Yellow Sea, China显示文摘The phytoplankton water samples were collected in two multidisciplinary investigations which were carried out during summer(June) and autumn(November to December) of 2011. Phytoplankton species composition and abundance data were accomplished by Uterm?hl method. The phytoplankton community was dominated by diatoms and dinoflagellates in the southern Yellow Sea(YS) in summer and autumn. In summer, Paralia sulcata and Prorocentrum dentatum were the predominated species, the cell abundance ranged from 0.074 to 107.733×103 cells/L with an average of 9.057×103 cells/L. Two phytoplankton high abundance appeared in northwest part of the survey area and the Changjiang River Estuary, respectively. In autumn, Par. sulcata became the predominant species, and the phytoplankton cell abundance ranged from 1.035×103 to 8.985×103 cells/L, the average was 3.263×103 cells/L. The phytoplankton abundance in surface layer presented the homogeneous distributions. Canonical Correspondence Analysis(CCA) method was applied for discovering the relationship between environmental factors and the common found phytoplankton species. The responses of phytoplankton to nutrients were varied between summer and autumn. The abundance of most predominant species, Par. sulcata was strongly correlated to temperature and salinity in autumn, but not the case in summer. | LIU Haijiao HUANG Yajie ZHAI Weidong GUO Shujin JIN Hualong SUN Jun | 2015 | Acta Oceanologica Sinica2015，34，2： | 8 |
| 4 | Spatial-temporal variation of phytoplankton community structure in Jiaozhou Bay, China显示文摘To better understand the spatial-temporal variation in phytoplankton community structure and its controlling factors in Jiaozhou Bay, Qingdao, North China, four seasonal sampling were carried out in 2017. The phytoplankton community structure and various environmental parameters were examined. The phytoplankton community in the bay was composed of mainly diatoms and dinofl agellates, and several other species of Chrysophyta were also observed. Diatoms were the most dominant phytoplankton group throughout the year, except in spring and winter, when Noctiluca scintillans was co-dominant. High Si/N ratios in summer and fall refl ect the high dominance of diatoms in the two seasons. Temporally, the phytoplankton cell abundance peaked in summer, due mainly to the high temperatures and nutrient concentrations in summer. Spatially, the phytoplankton cell abundance was higher in the northern part of the bay than in the other parts of the bay in four seasons. The diatom cell abundances show signifi cant positive correlations with the nutrient concentrations, while the dinofl agellate cell abundances show no correlation or a negative correlation with the nutrient concentrations but a signifi cant positive correlation with the stratifi cation index. This discrepancy was mainly due to the diff erent survival strategies between diatoms and dinofl agellates. The Shannon-Wiener diversity index ( H′) values in the bay ranged from 0.08 to 4.18, which fell in the range reported in historical studies. The distribution pattern of H′ values was quite diff erent from that of chlorophyll a , indicating that the phytoplankton community structure might have high biomass with a low diversity index. Compared with historical studies, we believe that the dominant phytoplankton species have been changed in recent years due mainly to the changing environment in the Jiaozhou Bay in recent 30 years. | GUO Shujin ZHU Mingliang ZHAO Zengxia LIANG Junhua ZHAO Yongfang DU Juan SUN Xiaoxia | 2019 | Journal of Oceanology and Limnology2019，37，5： | 6 |
| 5 | Estimation of Land Production and Its Response to Cultivated Land Conversion in North China Plain显示文摘Food safety and its related influencing factors in China are the hot research topics currently,and cultivated land conversion is one of the significant factors influencing food safety in China.Taking the North China Plain as the study area,this paper examines the changes of cultivated land area using satellite images,estimates land productivity from 1985 to 2005 using the model of Estimation System for Land Productivity(ESLP),and analyzes the impact of cultivated land conversion on the land production.Compared with the grain yield data from statistical yearbooks,the results indicate that ESLP model is an effective tool for estimating land productivity.Land productivity in the North China Plain showed a slight decreasing trend from 1985 to 2005,spatially,increased from the north to the south gradu-ally,and the net changes varied in different areas.Cultivated land area recorded a marginal decrease of 8.0 × 105 ha,mainly converted to other land uses.Cultivated land conversion had more significant negative impacts on land produc-tion than land productivity did.Land production decreased by about 6.48 × 106 t caused by cultivated land conversion between 1985 and 2005,accounting for 91.9% of the total land production reduction.Although the land productivity increased in Anhui and Jiangsu provinces,it can not offset the overall adverse effects caused by cultivated land con-version.Therefore,there are significant meanings to control the cultivated land conversion and improve the land pro-ductivity for ensuring the land production in the North China Plain. | JIANG Qun'ou DENG Xiangzheng ZHAN Jinyan HE Shujin | 2011 | Chinese Geographical Science2011，21，6： | 6 |
| 6 | Application of neural networks for permanent magnet synchronous motor direct torque control显示文摘Neural networks require a lot of training to understand the model of a plant or a process. Issues such as learning speed, stability, and weight convergence remain as areas of research and comparison of many training algorithms. The application of neural networks to control interior permanent magnet synchronous motor using direct torque control (DTC) is discussed. A neural network is used to emulate the state selector of the DTC. The neural networks used are the back-propagation and radial basis function. To reduce the training patterns and increase the execution speed of the training process, the inputs of switching table are converted to digital signals, i.e., one bit represent the flux error, one bit the torque error, and three bits the region of stator flux. Computer simulations of the motor and neural-network system using the two approaches are presented and compared. Discussions about the back-propagation and radial basis function as the most promising training techniques are presented, giving its advantages and disadvantages. The system using back-propagation and radial basis function networks controller has quick parallel speed and high torque response. | Zhang Chunmei Liu Heping Chen Shujin Wang Fangjun | 2008 | Journal of Systems Engineering and Electronics2008，19，3： | 6 |
| 7 | Effects of oriented substrates on cell morphology,the cell cycle,and the cytoskeleton in Ros 17/2.8 cells显示文摘Absence of gravity or microgravity influences the cellular functions of bone forming osteoblasts.The underlying mechanism,however,of cellular sensing and responding to the gravity vector is poorly understood.This work quantified the impact of vector-directional gravity on the biological responses of Ros 17/2.8 cells grown on upward-,downward-or edge-on-oriented substrates.Cell morphology and nuclear translocation,cell proliferation and the cell cycle,and cytoskeletal reorganization were found to vary significantly in the three orientations.All of the responses were duration-dependent.These results provide a new insight into understanding how osteoblasts respond to static vector-directional gravity. | LI Hong,CHEN Juan,ZHANG Yan,SUN ShuJin,TAO ZuLai & LONG Mian* Key Laboratory of Microgravity,Institute of Mechanics,Chinese Academy of Sciences,and National Microgravity Laboratory and Center for Biomechanics and Bioengineering,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China | 2010 | Science China(Life Sciences)2010，53，9： | 5 |
| 8 | On the atmospheric movement and the imbalance of observed and calculated energy in the surface layer显示文摘Based on existing researches,here we theoretically summarized the characteristics of the atmospheric movement and turbulent transport of energy and substance in the surface layer as well as the ideal and the actual models for the turbulent transport.Then,using the data observed with eddy covariance at the semiarid climate and environment monitoring station(SACOL) in Lanzhou University from May to October during four consecutive years(September 2006-August 2010),we conducted a detailed analysis of the turbulent transport in the surface layer,through introducing the relative vertical turbulence intensity to characterize the turbulence strength,RIw=wn(wn+U),and also by adopting the method for controlling data quality at different levels.Our conclusions are:(1) The turbulent transport of energy and substance in the surface layer must obey the law of conservation of energy and the law of conservation of matter,the observed and calculated energy in the surface layer must be balanced,or closed in theory,but the actual observed and calculated energy just approximates the ideal in some degree and is difficult to achieve the energy balance.(2) The energy closure rate depends much on the atmospheric state in the surface layer,and the energy closure rate increases generally with the relative vertical turbulence intensity.(3) By the way of controlling data quality at different levels,it is found that the degree of data quality control can affect the closure rate,but it does not change the fact that the energy closure rate depends on the atmospheric state.(4) The calculation method of surface soil heat flux can affect energy closure rate,but does not change its dependence on the atmospheric state. | ZUO HongChao XIAO Xia YANG QiDong DONG LongXiang CHEN JiWei WANG ShuJin | 2012 | Science China Earth Sciences2012，55，9： | 5 |
| 9 | Mapping the Nuclear Fertility Restorer Gene in Rice with Simple Sequence Length Polymorphism (SSLP)显示文摘Bulked segregant analysis (BSA) of a F2 population derived from D62A/Ruby B was used to map the nuclear fertility restorer gene for wild abortive (WA) cytoplasmic male sterility. Three hundred and ninety-seven microsatellite primer pairs which distributed on 12 chromosomes were screened for polymorphisms between the parents and between two bulks representing fertile and sterile plants. One microsatellite marker RM182 located on chromosome 7 produced polymorphic products. The nuclear fertility restorer gene for WA cytoplasmic male sterility was mapped on chromosome 7, 7.4cM from RM182. | 朱建清 Zhang Hanyao Liu Zhu Liao Jinhua LI Shujin Ye Xiaoying Wang Lihua Zhao Jian Yang Zhirong | 2004 | High Technology Letters2004，10，4： | 5 |
| 10 | Metropolitan resources efficiencies,change trends and causes in China under the goal to build an international metropolis显示文摘大城市的资源全面效率(也叫的全面技术效率,为 CTE 短,此后) ,分别地,变化趋势和原因在时期期间在中国用 DEA 和 Malmquist 索引模型被调查 19902006。第一, DEA 模型结果证明大城市的 CTE 只对有几乎衰退从的特征的 middling 公正东方对西方的中国,和仅仅很少宗主国沿海是 DEA 有效。第二,也, PTE 与城市的人口被相关的表演否定地宗主国缩放的结果,和 SE 在 1990 , 2000 和 2006 与宗主国的城市的人口尺寸断然相关,也就是说,与变得更大的城市的人口尺寸,相应 PTE 因此正在减少,并且 SE 因而正在增加,增加的率随规模增加是更小的。第三,大城市的效率的影响因素分别地在 1990 和 2000 是 SE 和 PTE。但是 PTE 与快速的扩大成为了占优势的影响因素布满建筑物在 2006 的宗主国的区域和人口规模。第四, Malmquist 索引结果证明 CTE 变化趋势微弱地正在增加,工艺的变化趋势正在衰退,并且 TFP 变化趋势在 19902006 期间显然正在衰退,在哪个他们都在亚时期期间正在增加 19902000,并且所有在亚时期期间减少 20002006。第五, Malmquist 索引结果也证明 CTE 变化趋势在东方沿海的中国微弱地正在增加,在华中衰退,并且在西方的中国显然衰退。并且与城市的人口尺寸,增加 SE 的增加的趋势变得越来越弱。并且为不太高,它的变化趋势和 TFP 改变趋势微弱地正在增加的 CTE 的主要原因主要在工艺的退化和在 20002006 期间显著地衰退的 PTE 变化趋势躺着。最后,分析证明瓷器大城市的人口吊杆和快速的传播布满建筑物区域确实引起了他们的资源效率损失。 | GUO Tengyun HE Shujin DONG Guanpeng | 2011 | Journal of Geographical Sciences2011，21，4： | 4 |
| 11 | Genome and transcriptome of Papaver somniferum Chinese landrace CHM indicates that massive genome expansion contributes to high benzylisoquinoline alkaloid biosynthesis显示文摘Opium poppy(Papaver somniferum)is a source of morphine,codeine,and semisynthetic derivatives,including oxycodone and naltrexone.Here,we report the de novo assembly and genomic analysis of P.somniferum traditional landrace‘Chinese Herbal Medicine’.Variations between the 2.62 Gb CHM genome and that of the previously sequenced high noscapine 1(HN1)variety were also explored.Among 79,668 protein-coding genes,we functionally annotated 88.9%,compared to 68.8%reported in the HN1 genome.Gene family and 4DTv comparative analyses with three other Papaveraceae species revealed that opium poppy underwent two whole-genome duplication(WGD)events.The first of these,in ancestral Ranunculales,expanded gene families related to characteristic secondary metabolite production and disease resistance.The more recent species-specific WGD mediated by transposable elements resulted in massive genome expansion.Genes carrying structural variations and large-effect variants associated with agronomically different phenotypes between CHM and HN1 that were identified through our transcriptomic comparison of multiple organs and developmental stages can enable the development of new varieties.These genomic and transcriptomic analyses will provide a valuable resource that informs future basic and agricultural studies of the opium poppy. | Li Pei Baishi Wang Jian Ye Xiaodi Hu Lihong Fu Kui Li Zhiyu Ni Zhenlong Wang Yujie Wei Luye Shi Ying Zhang Xue Bai Mengwan Jiang Shuhui Wang Chunling Ma Shujin Li Kaihui Liu Wanshui Li Bin Cong | 2021 | Horticulture Research2021，8，1： | 4 |
| 12 | Factors and mechanism driving the land-use conversion in Jiangxi Province显示文摘This article explores the factors and mechanism driving the land-use conversion at regional level by developing and using an econometric approach which is called the simultaneous equations model (SEM). A case study in Jiangxi Province of China is conducted by establishing the SEM, which consists of three equations including agricultural production, land conversion of cultivated land to built-up area and land conversion of cultivated land to forest cover/grassland from 1988 to 2005. And then this paper employs the method of piecewise estimation to represent the influences of the factors such as population, society, economy, location and geophysical conditions on the process of land-use conversion in Jiangxi Province. Estimation results show that population is a predominant factor driving the land-use conversion at counties, while social and economic factors are determinant factors in the short term for the entire Jiangxi Province. Specifically, the size of agricultural population and the magnitude of agricultural input determine the agricultural production to a large extent; population size, plain area proportion at counties and land management policies together affect the direction and magnitude of conversion between cultivated land and built-up area; agricultural population proportion, terrain slope, grain production and non-agricultural industry promote the conversion of cultivated land to forest cover/grassland. Furthermore, the explored mechanism also reveals the underlying causes of the land use changes driven by a series of factors in Jiangxi Province. Finally, this paper concludes that factors proven to play an important role in driving the land-use conversion need to be considered when the land management agencies make out the land use planning to optimize the land use, expand the agricultural production, and conserve the cultivated land. | ZHAN Jinyan SHI Nana HE Shujin LIN Yingzhi | 2010 | Journal of Geographical Sciences2010，20，4： | 4 |
| 13 | Association of SNPs in miR-146a, miR-196a2, and miR-499 with the risk of endometrial/ovarian cancer显示文摘MicroRNAs (miRNAs ) 是小非编码的 RNA 分子的一个类(包含 22 核苷酸) ,它在 RNA silencing 和基因表示的 post-transcriptional 规定工作[1 ] 。miRNAs 被报导了在 tumorigenesis 起一个关键作用[1 ] 。在 miRNA 基因的一些单个核苷酸多型性(SNP ) 能影响 miRNAs 的产生或功能,并且可能从而影响肿瘤生长和开发。 | Xiaoyan Liu Beihui Xu Shujin Li Bin Zhang Peimin Mao Beibei Qian Lin Guo Peihua Ni | 2015 | Acta Biochimica et Biophysica Sinica2015，47，7： | 2 |
| 14 | The ER membrane protein complex subunit Emc3 controls angiogenesis via the FZD4/WNT signaling axis显示文摘The endoplasmic reticulum(ER) membrane protein complex(EMC) regulates the synthesis and quality control of membrane proteins with multiple transmembrane domains. One of the membrane spanning subunits, EMC3, is a core member of the EMC complex that provides essential hydrophilic vestibule for substrate insertion. Here, we show that the EMC subunit Emc3 plays critical roles in the retinal vascular angiogenesis by regulating Norrin/Wnt signaling. Postnatal endothelial cell(EC)-specific deletion of Emc3 led to retarded retinal vascular development with a hyperpruned vascular network, the appearance of bluntended, aneurysm-like tip endothelial cells(ECs) with reduced numbers of filopodia and leakage of erythrocytes at the vascular front. Diminished tube formation and cell proliferation were also observed in EMC3 depleted human retinal endothelial cells(HRECs). We then discovered a critical role for EMC3 in expression of FZD4 receptor of β-catenin signaling using RNA sequencing, real-time quantitative PCR(RT-q PCR) and luciferase reporter assay. Moreover, augmentation of Wnt activity via lithium chloride(Li Cl) treatment remarkably enhanced β-catenin signaling and cell proliferation of HRECs. Additionally, Li Cl partially reversed the angiogenesis defects in Emc3-c KO mice. Our data reveal that Emc3 plays essential roles in angiogenesis through direct control of FZD4 expression and Norrin/β-catenin signaling. | Mu Yang Shujin Li Wenjing Liu† Xiao Li Yunqi He Yeming Yang Kuanxiang Sun Lin Zhang Wanli Tian Lixin Duan Huafu Chen Dezhong Yao Zhenglin Yang Xianjun Zhu | 2021 | Science China(Life Sciences)2021，64，11： | 2 |
| 15 | How Does Trade Openness Affect Regional Demographic Transitions? Evidence from China's Provincial Panel Data显示文摘This paper investigates the effect of trade openness and other variables on thedemographic transition in China using the instrumental variables regression methodbased on provincial panel data for the period between 1981 and 2013. The resultsindicate that trade openness is one of the determinants of China's demographictransition and has two distinct effects: (i) an income effect that accelerated thedemographic transition by increasing per capita income; and (ii) a human capital effectthat suppressed the demographic transition by reducing human capital accumulation.The effects of trade on demographic transition vary across different regions. This studyidentifies the important determinants of demographic transition in China's regions, andhas rich policy implications for demographic transition and the upgrading of tradestructure. | Shujin Zhu Renyu Li Tenglong Zhong | 2017 | China & World Economy2017，25，3： | 2 |
| 16 | Effects of doping Eu2O3 on the phase transformation and piezoelectric properties of Bi1/2Na1/2TiO3based ceramics显示文摘 | Yuanhua Lin Shujin Zhao Ning Cai etc | 2003 | Materials Science and Engineering B2003，99，： | 1 |
| 17 | Mechanical properties and texture evolution during rolling process of an AZ31 Mg alloy 显示文摘 | Liang Shujin Sun Hongfei Liu Zuyan | 2009 | Journal of Alloys and Compounds2009，472，： | 1 |
| 18 | Attributes reduct and decision rules optimization based on maximal tolerance classification in incomplete information systems with fuzzy decisions显示文摘A new approach to knowledge acquisition in incomplete information system with fuzzy decisions is proposed. In such incomplete information system, the universe of discourse is classified by the maximal tolerance classes, and fuzzy approximations are defined based on them. Three types of relative reducts of maximal tolerance classes are then proposed, and three types of fuzzy decision rules based on the proposed attribute description are defined. The judgment theorems and approximation discernibility functions with respect to them are presented to compute the relative reduct by using Boolean reasoning techniques, from which we can derive optimal fuzzy decision rules from the systems. At last, three types of relative reducts of the system and their computing methods are given. | Fang Yang Yanyong Guan Shujin Li Lei Du | 2010 | Journal of Systems Engineering and Electronics2010，21，6： | 1 |
| 19 | Seasonal variation in the phytoplankton community of a continental-shelf sea: the East China Sea 显示文摘 | Guo Shujin Feng Yuanyuan Wang Lei et ai | 2014 | Marine Ecology Progress Series2014，516，： | 1 |
| 20 | Investigation and control of vortex-induced vibration of twin box girders显示文摘 | Shujin Laima Hui Li Wenli Chen Fengchen Li | 2013 | Journal of Fluids and Structures2013，，： | 1 |
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