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| 1 | Terrestrial carbon sinks in China and around the world and their contribution to carbon neutrality显示文摘Enhancing the terrestrial ecosystem carbon sink(referred to as terrestrial C sink) is an important way to slow down the continuous increase in atmospheric carbon dioxide(CO_(2)) concentration and to achieve carbon neutrality target.To better understand the characteristics of terrestrial C sinks and their contribution to carbon neutrality,this review summarizes major progress in terrestrial C budget researches during the past decades,clarifies spatial patterns and drivers of terrestrial C sources and sinks in China and around the world,and examines the role of terrestrial C sinks in achieving carbon neutrality target.According to recent studies,the global terrestrial C sink has been increasing from a source of (-0.2±0.9) Pg C yr^(-1)(1 Pg=1015g)in the 1960s to a sink of (1.9±1.1) Pg C yr^(-1) in the 2010s.By synthesizing the published data,we estimate terrestrial C sink of 0.20–0.25 Pg C yr^(-1) in China during the past decades,and predict it to be 0.15–0.52 Pg C yr^(-1) by 2060.The terrestrial C sinks are mainly located in the mid-and high latitudes of the Northern Hemisphere,while tropical regions act as a weak C sink or source.The C balance differs much among ecosystem types:forest is the major C sink;shrubland,wetland and farmland soil act as C sinks;and whether the grassland functions as C sink or source remains unclear.Desert might be a C sink,but the magnitude and the associated mechanisms are still controversial.Elevated atmospheric CO_(2) concentration,nitrogen deposition,climate change,and land cover change are the main drivers of terrestrial C sinks,while other factors such as fires and aerosols would also affect ecosystem C balance.The driving factors of terrestrial C sink differ among regions.Elevated CO_(2) concentration and climate change are major drivers of the C sinks in North America and Europe,while afforestation and ecological restoration are additionally important forcing factors of terrestrial C sinks in China.For future studies,we recommend the necessity for intensive and long-term ecosystem C monitoring over broad geographic scale to improve terrestrial biosphere models for accurately evaluating terrestrial C budget and its dynamics under various climate change and policy scenarios. | Yuanhe Yang Yue Shi Wenjuan Sun Jinfeng Chang Jianxiao Zhu Leiyi Chen Xin Wang Yanpei Guo Hongtu Zhang Lingfei Yu Shuqing Zhao Kang Xu Jiangling Zhu Haihua Shen Yuanyuan Wang Yunfeng Peng Xia Zhao Xiangping Wang Huifeng Hu Shiping Chen Mei Huang Xuefa Wen Shaopeng Wang Biao Zhu Shuli Niu Zhiyao Tang Lingli Liu Jingyun Fang | 2022 | Science China(Life Sciences)2022，65，5： | 32 |
| 2 | Photocatalytic degradation kinetics and mechanism of pentachlorophenol based on superoxide radicals显示文摘The micron grade multi-metal oxide bismuth silicate (Bi 12 SiO 20,BSO) was prepared by the chemical solution decomposition technique.Photocatalytic degradation of pentachlorophenol (PCP) was investigated in the presence of BSO under xenon lamp irradiation.The reaction kinetics followed pseudo first-order and the degradation ratio achieved 99.1% after 120 min at an initial PCP concentration of 2.0 mg/L.The pH decreased from 6.2 to 4.6 and the dechlorination ratio was 68.4% after 120 min at an initial PCP concentration of 8.0 mg/L.The results of electron spin resonance showed that superoxide radical (O 2 · ) was largely responsible for the photocatalytic degradation of PCP.Interestingly,this result was different from that of previous photocatalytic reactions where valence band holes or hydroxyl radicals played the role of major oxidants.Some aromatic compounds and aliphatic carboxylic acids were determined by GC/MS as the reaction intermediates,which indicated that O 2 · can attack the bond between the carbon and chlorine atoms to form less chlorinated aromatic compounds.The aromatic compounds were further oxidized by O 2 · to generate aliphatic carboxylic acids which can be finally mineralized to CO 2 and H 2 O. | Yang Li Junfeng Niu Lifeng Yin Wenlong Wang Yueping Bao Jing Chen Yanpei Duan | 2011 | Journal of Environmental Sciences2011，23，11： | 9 |
| 3 | Composition of algal pigments in surface freshen layer after ice melt in the central Arctic显示文摘Seasonal meltwater input creates a thin freshen layer in surface seawater under ice,which largely shifts the algae assemblages.Our recent observation of photosynthetic pigments in the high Arctic showed that ice bottom and 5m of seawater under ice contained relatively high concentration of fucoxanthin,while chlorophyll b and lutein were the major diagnostic pigments in ice-water interface and 0 m of seawater under ice.Additionally,a notable change of dominant phytoplankton occurred in the top 5 m of seawater under ice,from chlorophytes-dominated at surface to diatoms-dominated at 5 m depth,which might attribute to the sharp salinity gradient(salinity from12.5 to 28.1) in the surface seawater under ice.Our results imply that phytoplankton community in surface layer under ice would become more chlorophytes in the future warming Arctic Ocean. | ZHUANG Yanpei JIN Haiyan GU Fan ZHANG Yang BAI Youcheng JI Zhongqiang LU Yong CHEN lianfang | 2017 | Acta Oceanologica Sinica2017，36，8： | 6 |
| 4 | Flow Boiling of Ammonia in a Diamond-Made MicroChannel Heat Sink for High Heat Flux Hotspots显示文摘To solve the heat dissipation problem of electronic devices with high heat flux hotspots,a diamond microchannel heat sink consisting of 37 parallel triangular microchannels with channel lengths of 45 mm and hydraulic diameters of 280|im was designed.The flow boiling heat transfer characteristics of ammonia in the microchannels were investigated under high heat fluxes of 473.9-1000.4 W/cm^2.Saturated flow boiling experiments with saturation temperatures of 25℃,30℃,and 35℃ and mass fluxes of 98-1200 kg/m^2s were conducted,as well as subcooled flow boiling with inlet subcooling of 5℃ as a comparison.The temperature and pressure drop measurements were analyzed.The main conclusions below can be drawn.(1)At a given heat flux,the heat source temperature first decreased and then increased with the mass flux,and there existed an optimum mass flux to optimize the cooling performance of the heat sink.(2)The heat transfer performance under the saturated inlet condition was obviously better than that under the subcooled inlet condition.(3)A larger saturation temperature leaded to weakening of both the heat transfer capacity and the stability of the microchannel heat sink.Notably,with the high heat diffusion ability of the diamond substrate and the great heat transfer capacity of ammonia flow boiling in microchannels,the heat sink can achieve a heat removal capacity of up to 1000.4 W/cm^2. | YANG Qi MIAO Jianyin ZHAO Jingquan HUANG Yanpei FU Weichun SHEN Xiaobin | 2020 | Journal of Thermal Science2020，29，5： | 4 |
| 5 | Nitrate δ^(15)N and δ^(18)O evidence for active biological transformation in the Changjiang Estuary and the adjacent East China Sea显示文摘The Changjiang Estuary has been considered as one of the most polluted estuaries in the world due to high nitrate (NO-3) input, especially in spring and summer. In this study, δ15N and δ18O of NO-3 , along with other chemical parameters in this area, were measured in spring to evaluate NO-3 biogeochemical processes. A simple two end-members mixing model was used to examine the relative contribution of the Changjiang River Diluted Water and marine water to NO-3 sources in the Changjiang Estuary and the adjacent East China Sea. The isotopic signals show that NO-3 behaved relatively and conservatively in Transect F and Transect P where assimilation was weak possibly due to vertical mixing, while active assimilation and weak nitrification occurred in Transect D. Spatial difference in assimilation was indicated by the~1:1 enrichment of δ15N and δ18O in the three transects, while spatial difference in nitrification was reflected by deviations of δ15 N and δ18O from assimilation line. Our results suggest that the input of the Changjiang River Diluted Water promoted NO-3 assimilation possibly by stratifying the water column which favored the phytoplankton growth. | CHEN Fajin CHEN Jianfang JIA Guodong JIN Haiyan XU Jie YANG Zhi ZHUANG Yanpei LIU Xizhen ZHANG Haisheng | 2013 | Acta Oceanologica Sinica2013，32，4： | 4 |
| 6 | Response of phytoplankton community to different water types in the western Arctic Ocean surface water based on pigment analysis in summer 2008显示文摘Nutrients and photosynthesis pigments were investigated in the western Arctic Ocean during the 3rd Chinese Arctic Research Expedition Cruise in summer 2008.The study area was divided into five provinces using the Kmeans clustering method based on the physical and chemical characteristics of the sea water,and to discuss the distribution of the phytoplankton community structure in these provinces.CHEMTAX software was performed using HPLC pigments to estimate the contributions of eight algal classes to the total chlorophyll a(TChl a).The results showed that on the Chukchi Shelf,the Pacific Ocean inflow mainly controlled the Chl a biomass and phytoplankton communities by nutrient concentrations.The high nutrient Anadyr Water and Bering Shelf Water(An W and BSW) controlled region have high Chl a levels and the diatom dominated community structure.In contrast,in the region occupied by low-nutrient like Alaska Coastal Water(ACW),the Chl a biomass was low,with pico-and nano-phytoplankton as dominated species,such as prasinophytes,chrysophytes and cryptophytes.However,over the off-shelf,the ice cover condition which would affect the physical and nutrient concentrations of the water masses,in consequence had a greater impact on the phytoplankton community structure.Diatom dominated in ice cover region and its contribution to Chl a biomass was up to 75%.In the region close to the Mendeleev Abyssal Plain(MAP),controlled by sea-ice melt water with relatively high salinity(MW-HS),higher nutrient and Chl a concentrations were found and the phytoplankton was dominated by pico-and nano-algae,while the diatom abundance reduced to 33%.In the southern Canada Basin,an ice-free basin(IfB) with the lowest nutrient concentrations and most freshened surface water,low Chl a biomass was a consequence of low nutrients.The ice retreating and a prolonged period of open ocean may not be beneficial to the carbon export efficiency due to reducing the Chl a biomass or intriguing smaller size algae growth. | JIN Haiyan ZHUANG Yanpei LI Hongliang CHEN lianfang GAO Shengquan JI Zhongqiang ZHANG Yang | 2017 | Acta Oceanologica Sinica2017，36，8： | 2 |
| 7 | Spiro-conjugated indenodiarylethenes: enabling steric-induced electronic tuning of photochromic and photoluminescent properties by spiro-conjugation显示文摘Light-operated excited-state photochemical reactions and the resulting photochromic materials have gained significant attention for their promising technological applications in molecular electronic and photonic devices.To obtain photochromic materials(e.g.,diarylethenes)with desired properties,the way to tune energy processes of the excited state is essentially important,from both fundamental and practical viewpoints.The modified diarylethenes mostly focused on structural improvements to achieve efficient photochromism.We report here two new spiro-conjugated indenodiarylethenes(named,SFI-Th and SFI-Sul)with an orthogonally arranged spiroπ-scaffold.The spiro fluorene sterically constrains the free volume of photoactive side aromatic rings,while the spiro-conjugation points toward modulation of the decaying channels of excited-state energy,thus allowing for tuning photochromic performances.These spirodiarylethenes SFI-Th and SFI-Sul are readily accessible with low cost and show distinct photochromic and photoluminescent properties.On one hand,the SFI-Th bearing bisthienyl side rings,is an excellent photochromic switch showing high thermal stability and high fatigue resistance in both solution and amorphous state,likely benefited from steric-induced excited-state energy transfer into reversible photochemical reactions,owing to higherπ-orbital spiro-conjugation between the two molecular halves.On the other hand,the SFI-Sul with bissulfonyl side rings,most notably,displays quantitative photocyclization to yield SFI-Sulc upon excitation.However,the ring-closed SFI-Sulc has an extremely slow photocycloreversion,and meanwhile immediately switches on emissive state with a strong fluorescence(Φf=0.57 in amorphous powder state).We study the modulated roles of spiroπ-scaffold in both cases computationally and experimentally,and attribute the facilitated photochemical reaction to the positively electronic effects of spiro-conjugation,and the photo-responsive radiative transition to the negatively electronic effects of spiro-conjugation,respectively.In all,this work demonstrates that the spiro-conjugation is a new and efficient strategy to deliver excitation energy transfer(EET)for featured photochromic properties,due to its advantage in steric-induced electronic modulation. | Tingting Huang Hongyu Liu Yawen Bang Yanpei Wang Yuan Liang Xinhao Wang Yang Zhang Sheng Xie Zebing Zeng Ben Zhong Tang | 2020 | Science China Chemistry2020，63，11： | 1 |
| 8 | Electrochemical Ring Expansion to Synthesize Medium-Sized Lactams Through C–C Bond Cleavage显示文摘Medium-sized nitrogen heterocycles are prevalent motifs in many kinds of bioactive molecules and natural products.Owing to the unfavorable enthalpic and entropic barriers during the transition states,access to medium-sized rings is challenging.Herein,a general and practical electrochemical ringexpansion protocol has been developed from commercially available benzocyclic ketones and amides.In this regard,a series of highly functionalized eightto eleven-membered lactams could be successfully accessed in high yields and efficiencies. | Kun Liu Chunlan Song Xu Jiang Xin Dong Yuqi Deng Wenxu Song Yanpei Yang Aiwen Lei | 2021 | CCS Chemistry2021，3，8： | 0 |
| 9 | Embedding generalized of circulant graphs and Petersen graphs on projective plane显示文摘 | Yah YANG Yanpei LIU | 2015 | Frontiers of Mathematics in China2015，10，1： | 0 |
| 10 | Synthesis of PE with Broad MWD Catalyzed by Supported Ziegler-Natta Catalyst Consisting of Cycloalkoxy Silane as IED显示文摘Two kinds of cycloalkoxy silane compounds were synthesized and used as the internal electron donors(IEDs) of supported Ziegler-Natta catalyst for ethylene polymerization to produce polyethylene with broader molecular weight distribution(MWD). The effect of the structure and the amount of these IEDs on the polymerization performance was investigated. The results implied that the molecular weight distribution of the obtained polyethylene could be adjusted by the incorporation of IEDs. SEM result showed that the morphology of catalyst particle was spherical and uniform in size distribution. The titanium content of these catalysts was higher, the active TiCl4 species were easily anchored on the support than that without adding IED, which was determined by ICP. The GPC result confirmed that the polyethylene with broader molecular weight distribution in the range of from 23.4 to 25.6 was obtained using triethoxy-(-cyclopentyloxy)-silane(ED1) and triethoxy-(-cyclohexyloxyl)- silane(ED2) as the internal electron donors. | Yu Mengshan Nie Yanpei Zhou Lu Yi Jianjun Huang Qigu Gao Kejing Yang Wantai | 2014 | China Petroleum Processing & Petrochemical Technology2014，16，2： | 0 |
| 11 | Sources and distribution of particulate organic carbon in Great Wall Cove and Ardley Cove, King George Island, West Antarctica显示文摘Concentrations of chlorophyll-a(Chl-a), particulate organic carbon(POC) and its stable carbon isotope composition(δ13C) were analyzed to investigate the biogeochemical characteristics and sources of POC in Great Wall Cove(GWC) and Ardley Cove(AC) during the austral summer. POC concentrations ranged from 50.51 to 115.41 μg·L-1(mean±1 standard deviation: 77.69±17.27 μg·L-1) in GWC and from 63.42 to 101.79 μg·L-1(82.67±11.83 μg·L-1) in AC. The POC δ13C ranged from-30.83‰ to-26.12‰(-27.40‰±0.96‰) in GWC and from-28.21‰ to-26.65‰(-27.45‰±0.47‰) in AC. The temperature and salinity results showed distinct runoff signals in both GWC and AC, although the δ13C data and POC distribution indicate a negligible influence of land sources upon POC. The δ13C values suggest that POC is of predominantly marine origin. The POC/Chl-a ratio and the relationship between POC and Chl-a indicate that phytoplankton, organic detritus and heterotrophic organisms are significant contributors to POC in GWC and AC. | TIAN Shichao JIN Haiyan GAO Shengquan ZHUANG Yanpei ZHANG Yang WANG Bin CHEN Jianfang | 2015 | Advances in Polar Science2015，26，1： | 0 |
| 12 | Endozoochorous seed dispersal by golden snub-nosed monkeys in a temperate forest显示文摘Seed dispersal is essential for plant recruitment and the maintenance of biodiversity.Colobine monkeys are primarily folivorous,but they also consume fruits and are often assumed to be seed predators.Although they are known to be epizoochorous seed dispersers,their role as endozoochorous seed dispersers needs reassessment.We examined potential endozoochory in golden snub-nosed monkeys(Rhinopithecus roxellana)at Dalongtan in Shennongjia National Park,central China,by assessing potential germination of ingested seeds(n=1806,9 species)from fecal samples.Intact seeds were in almost all fecal samples(ranging from 5-130 seeds),and ingested seeds were from small seeded species(seed width<4.5 mm).The 2 most abundant species were Actinidia arguta(73%)and Rosa caudata(15%).The fruits of A.arguta were unripe when ingested(i.e.effective seed predation)and the ingested seeds did not germinate in the trials.Therefore,ingestion of unripe seeds does not lead to effective seed dispersal.However,germination rates of defecated R.caudata(9%)were greater than control seeds(6%and 0%),demon-strating potential endozoochorous seed dispersal.Thus,colobine monkeys do indeed disperse mainly small-seeded from multi-seeded fruits through potential endozoochory and this process enhances the recruitment of seedlings. | Hui YAO Yanpei BAI Yuan CHEN Haochun CHEN Wanji YANG Xiangdong RUAN Zuofu XIANG | 2021 | Integrative Zoology2021，16，1： | 0 |
| 13 | Maize cryptochromes 1a1 and 1a2 promote seedling photomorphogenesis and shade resistance in Zea mays and Arabidopsis显示文摘Maize growth and development are regulated by light quality,intensity and photoperiod.Cryptochromes are blue/ultraviolet-A light receptors involved in stem elongation,shade avoidance,and photoperiodic flowering.To investigate the function of cryptochrome 1(CRY1) in maize,where it is encoded by Zm CRY1,we obtained two Zm CRY1a genes(Zm CRY1a1 and Zm CRY1a2),both of which share the highest similarity with other gramineous plants,in particular rice CRY1a by phylogenetic analysis.In Arabidopsis,overexpression of Zm CRY1a genes promoted seedling de-etiolation under blue and white light,resulting in dwarfing of mature plants.In seedlings of the maize inbred line Zong 31(Zm CRY1aOE),overexpression of Zm CRY1a genes caused a reduction in the mesocotyl and first leaf sheath lengths due to down-regulation of genes influencing cell elongation.In mature transgenic maize plants,plant height,ear height,and internode length decreased in response to overexpression of Zm CRY1a genes.Expression of Zm CRY1a were insensitive to low blue light(LBL)-induced shade avoidance syndrome(SAS) in Arabidopsis and maize.This prompted us to investigate the regulatory role of the gibberellin and auxin metabolic pathways in the response of Zm CRY1a genes to LBL treatment.We confirmed a link between Zm CRY1a expression and hormonal influence on the growth and development of maize under LBL-induced SAS.These results reveal that Zm CRY1a has a relatively conservative function in regulating maize photomorphogenesis and may guide new strategies for breeding high density-tolerant maize cultivars. | Xiaocong Fan Shizhan Chen Wenjing Wu Meifang Song Guanghua Sun Shuaitao Yao Weimin Zhan Lei Yan Hongdan Li Yanpei Zhang Lijian Wang Kang Zhang Liangliang Jiang Jianping Yang Qinghua Yang | 2023 | The Crop Journal2023，11，4： | 0 |
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