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Modified vegetation-erosion dynamics model and its application in typical watersheds in the Loess Plateau

International Journal of Sediment research 2011年第1期26卷 78-86页

作者： chen yuehong~1,wang feixin~2.liu guangquan~3,yu xinxiao~4, jia guodong~5,and gan ping~6 china institute of water resources and hydropower research,beijing 100048 International research and Training Center on Erosion and Sediment research,beijing 100048,china beijing Forestry University,beijing 100083,china. Key Lab of Dredging Technology of CCGRP,Shanghai waterway Engineering Design and Consulting Co., Ltd,Shanghai 200120,china. International research and Training Center on Erosion and Sedimentation china institute of water resources and hydropower research,beijing 100048 Northwest A&F University,Yangling 712100,china, beijing Forestry University,beijing 100083,china, beijing Forestry University,beijing 100083,china. china institute of water resources and hydropower research,beijing 100048,and International research and Training Center on Erosion and Sediment research,beijing 100048,china Assoc. Prof. Dr. China Institute of Water Resources and Hydropower Research Beijing 100048 International research and Training Center on Erosion and Sediment research Beijing 100048 China beijing Forestry University Beijing 100083 China Dr. Key Lab of Dredging Technology of CCGRP Shanghai Waterway Engineering Design and Consulting Co. Ltd Shanghai 200120 China Prof. Dr. International Research and Training Center on Erosion and Sedimentation china institute of water resources and hydropower research Beijing 100048 Northwest A&F University Yangling 712100 China Prof. Dr. Beijing Forestry University Beijing 100083 China Dr. Beijing Forestry University Beijing 100083 China Engineer China Institute of Water Resources and Hydropower Research Beijing 100048 and International Research and Training Center on Erosion and Sediment Research Beijing 100048 China

The vegetation-erosion model was applied in three typical watersheds of hilly and gully area in the Loess Plateau in northwestern china to study the dynamic relations between vegetation coverage and soil erosion rate and various *** model was improved by introducing rainfall and runoff *** the modified model was applied in the Luergou and Luoyugou *** calculation results with the modified model were compared with the results of the original *** precisions of simulated vegetation coverage and soil erosion rate with the modified model were greatly improved compared with the original *** erosion rate reduced with increasing vegetation coverage and the human disturbance caused high soil erosion.

关键词： Soil erosion Vegetation coverage Vegetation-erosion dynamics model Loess Plateau Modified model

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The RNA binding protein EHD6 recruits the m^(6)A reader YTH07 and sequesters OsCOL4 mRNA into phase-separated ribonucleoprotein condensates to promote rice flowering

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Molecular Plant 2024年第6期17卷 935-954页

作者： Song Cui Peizhe Song Chaolong wang Saihua chen Benyuan Hao Zhuang Xu Liang Cai Xu chen Shanshan Zhu Xiangchao gan Hui Dong yuan Hu Liang Zhou Haigang Hou yunlu Tian Xi liu Liangming chen Shijia liu Ling jiang Haiyang wang Guifang jia Shirong Zhou jianmin Wan State Key Laboratory for Crop Genetics&Germplasm Enhancement and Utilization Zhongshan Biological Breeding LaboratoryNational Observation and Research Station of Rice Germplasm ResourcesNanjing Agricultural UniversityNanjing 210095China State Key Laboratory for Crop Gene resources and Breeding Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China Synthetic and Functional Biomolecules Center Beijing National Laboratory for Molecular SciencesKey Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking-Tsinghua Center for Life SciencesBeijing Advanced Center of RNA BiologyPeking UniversityBeijingChina jiangsu Key Laboratory of Crop Genomics and Molecular Breeding Agricultural College of Yangzhou UniversityYangzhou 225009China Max Planck institute for Plant Breeding research Carl-von-Linne´-Weg 1050829 KolnGermany

N6-Methyladenosine(m^(6)A)is one of the most abundant modifications of eukaryotic mRNA,but its comprehensive biological functionality remains further *** this study,we identified and characterized a new flowering-promoting gene,EARLY HEADING DATE6(EHD6),in ***6 encodes an RNA recognition motif(RRM)-containing RNA binding protein that is localized in the non-membranous cytoplasm ribonucleoprotein(RNP)granules and can bind both m^(6)A-modified RNA and unmodified RNA *** found that EHD6 can physically interact with YTH07,a YTH(YT521-B homology)domain-containing m^(6)A *** showed that their interaction enhances the binding of an m^(6)A-modified RNA and triggers relocation of a portion of YTH07 from the cytoplasm into RNP granules through phase-separated *** these condensates,the mRNA of a rice flowering repressor,CONSTANS-like 4(OsCOL4),becomes sequestered,leading to a reduction in its protein abundance and thus accelerated flowering through the Early heading date 1 *** together,these results not only shed new light on the molecular mechanism of efficient m^(6)A recognition by the collaboration between an RNA binding protein and YTH family m^(6)A reader,but also uncover the potential for m^(6)A-mediated translation regulation through phaseseparated ribonucleoprotein condensation in rice.

关键词： N6-methyladenosine m^(6)A EHD6 YTH domain-containing protein phase separation heading date

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DEVELOPMENT OF DUALISTIC MODEL FOR INTEGRATED water resources MANAGEMENT IN THE HAIHE RIVER BASIN

DEVELOPMENT OF DUALISTIC MODEL FOR INTEGRATED WATER RESOURCE...

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16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS

作者： Yangwen jia,Hao wang,Hong gan,Zuhao Zhou,Yaqin Qiu,Jinjun You,Zhiguo gan,Cunwen Niu Department of water resources,institute of water resources and hydropower research(IWHR),20 Che-Gong-Zhuang West Road,beijing 100044,china

The dualistic model which reflects "natural-artificial" dualistic characteristics of water cycle is developed to support integrated management of water and environment in the Haihe river basin(320000 km2) in North *** dualistic model is established by coupling a distributed hydrological and water quality model(WEP-L),a water resources allocation model(ROWAS) and a multi-objective decision-making analysis model(DAMOS).Approach of two-hierarchy coupling is adopted for the three *** simulation units and planning and management units are subdivided by taking full consideration of two kinds of factors,i.e.,natural precipitation-runoff relation and river hydraulics,and human activities of land use and water resources *** Haihe river basin is subdivided into 11752 hydrological simulation units and 125 planning and management units,and simulations of 50 years from 1956 to 2005 are carried *** result shows that the simulation accuracy of established dualistic model is ***,a preliminary application of the model as a scenario analysis tool is introduced.

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农业水权交易发展影响因素分析——基于宏观、中观、微观视角

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中国农村水利水电 2024年第1期 86-93页

作者：郭家力康蕊王欣张静文陈向东刘睿水电工程施工与管理湖北省重点实验室(三峡大学) 湖北宜昌443002 三峡大学水利与环境学院湖北宜昌443002 湖北省水利水电科学研究院湖北省节水研究中心湖北武汉430070 江西水利科学研究院江西南昌330029 中国水权交易所北京100053

我国现阶段农业水权交易分散且规模较小,农业水权交易市场活跃度不高。随着水资源供需矛盾的日益紧张,需要激发市场在水资源配置中的决定性作用,进一步为农业水权创造更大的交易空间。农业水权涉及多层级管理制度,却少有从全局到细节不... 详细信息

我国现阶段农业水权交易分散且规模较小,农业水权交易市场活跃度不高。随着水资源供需矛盾的日益紧张,需要激发市场在水资源配置中的决定性作用,进一步为农业水权创造更大的交易空间。农业水权涉及多层级管理制度,却少有从全局到细节不同维度分析农业水权交易发展影响因素的研究,无法具有系统性地推动农业水权交易发展。为此,本文将影响农业水权交易发展的关键因素划分为宏观社会经济、中观市场主体及相互关系和微观交易要素三个维度,定性分析不同维度各因素指标的实质属性以及对农业水权交易发展的影响效果,找准农业水权交易发展的宏观支撑,明确农业水权交易市场的发展思路,进而聚焦到微观交易要素在水权交易过程中的作用,从三个维度分别提出加大农业水权交易政策和多途径推进农村水系连通的建设力度、明确政企角色定位、鼓励农业水权交易与土地实现同步流转等活跃农业水权交易市场的建议,以期为完善农业水权交易市场提供建设基础和思路。

关键词：农业水权交易水权交易市场建设影响因素

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3’-Methoxydaidzein exerts analgesic activity by inhibiting voltage-gated sodium channels

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Chinese Journal of Natural Medicines 2019年第6期17卷 413-423页

作者： XU Run-jia FEI Shuo-Han chen Lin-Yan wang gan liu Ming ZHANG Wen-Sheng YAN Xiu-Wen LAI Ren SHEN Chuan-Bin Life Sciences College of Nanjing Agricultural University Nanjing 210095China Key Laboratory of bioactive peptides of yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences Kunming Institute of ZoologyKunming 650223China Department of Molecular and Cell Biology School of Life SciencesUniversity of Science and Technology of ChinaHefei 230027China Laboratory of Anesthesia and Critical Care Medicine Translational Neuroscience CenterWest China HospitalSichuan UniversityChengdu 610041China Sino-African Joint research Center CASKunming Institute of ZoologyKunming 650223China

Isoflavones are widely consumed by people around the world in the form of soy products, dietary supplements and drugs. Many isoflavones or related crude extracts have been reported to exert pain-relief activities, but the mechanism remains unclear. Voltage-gated sodium channels(VGSCs) play important roles in excitability of pain sensing neurons and many of them are important nociceptors. Here, we report that several isoflavones including 3’-methoxydaidzein(3 MOD), genistein(GEN) and daidzein(DAI) show abilities to block VGSCs and thus to attenuate chemicals and heat induced acute pain or chronic constriction injury(CCI) induced pain hypersensitivity in mice. Especially, 3 MOD shows strong analgesic potential without inducing addiction through inhibiting subtypes NaV1.7, NaV1.8 and NaV1.3 with the IC50 of 181 ± 14, 397 ± 26, and 505 ± 46 nmol·L–1, respectively, providing a promising compound or parent structure for the treatment of pain pathologies. This study reveals a pain-alleviating mechanism of dietary isoflavones and may provide a convenient avenue to alleviate pain.

关键词： 3’-Methoxydaidzein Analgesic Isoflavone Chronic pain Sodium channel

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基于实景三维模型制作DLG线画图的优缺点

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河南水利与南水北调 2024年第4期53卷 82-83页

作者：陈嘉遵义市水利水电勘测设计研究院有限责任公司贵州遵义563000

摄影测量技术作为现代测绘技术中的主流技术,因其效率高并且人力物力消耗相对较小的特点,被广泛应用于各类工程项目。虽然传统摄影测量采用的普通立体测图能达到生产要求,但是在大比例尺地形图的制作中,应用倾斜摄影测量技术可高效解决... 详细信息

摄影测量技术作为现代测绘技术中的主流技术,因其效率高并且人力物力消耗相对较小的特点,被广泛应用于各类工程项目。虽然传统摄影测量采用的普通立体测图能达到生产要求,但是在大比例尺地形图的制作中,应用倾斜摄影测量技术可高效解决传统单一视角在高建筑物密集的区域无法绘制出精确的地形图以及难以分辨判读出一些细节地物的问题。首先外业运用倾斜摄影测量采集影像数据,接着应用建模软件生产出三维模型,最后借助三维测图系统对已经建成的三维模型进行大比例尺地形图的绘制,在满足测图精度的同时也处理了一些传统立体像对测图难以解决的问题,符合现代测绘技术的要求。

关键词：倾斜摄影测量实景三维建模三维测图技术优缺点分析

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Ergodicity of turbulence measurements upon complex terrain in Loess Plateau

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Science china Earth Sciences 2021年第1期64卷 37-51页

作者： Jinbei chen Xiaowen chen Xiaojun JING Wei jia Ye yu Suping ZHAO Key Laboratory of L and Surface Processes and Climate Change in the Cold and A rid Regions of the Chinese Academy of Sciences Northwest Institute of Eco-Environment and ResourcesCASLanzhou 730000China Penn State College of Engineering Pennsylvania State UniversityCenter 16802USA Taiyuan Meteorological Bureau Taiyuan 030082China

To display the distribution characteristics of turbulence eddy under condition of complex terrain in Loess Plateau,and to enhance the precision of turbulence measurements,the research of turbulence ergodicity is considered to be the prior section of the *** the statistics of single-site turbulence measurements obtained in Baimiao Tableland,ping Liang,gan Su,analysis result shows that not only the turbulence with scale less than 10 min,which can easily satisfy the ergodicity,the tableland terrain can also be a major cause of the coherent structure of periodic,large-scale turbulence;compared to which for the turbulence above the flat underlying surface,the distribution of 10–40 min,large-scale turbulence in the tableland region tends to be more steady and,thus,can also satisfy the ergodicity *** the condition of extremely unstable stratification,the wind is comparatively low in speed and features distinctly large-scale,periodical fluctuation,and with the trend of smooth increase in temperature,large-scale wind turbulence and temperature turbulence both tend to satisfy *** comparison,under the condition of extremely stable stratification,the aperiodicity of large-scale wind turbulence and temperature turbulence caused by intermittency is comparatively strong,and the turbulence cannot satisfy ergodicity easily.

关键词： Turbulence ergodicity Characteristic of turbulence distribution Atmospheric stratification Turbulence spectrum Band-pass filtering

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Development of an ultra-high-pressure rotary combined dynamic seal and experimental study on its sealing performance in deep energy mining conditions

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Petroleum Science 2022年第3期19卷 1305-1321页

作者： Wei Huang gan Feng Hui-Lan He jian-Zhong chen Jiu-Quan wang Zhao Zhao Key Laboratory of Deep Earth Science and Engineering(Sichuan University) Ministry of EducationSichuan UniversityChengdu610065SichuanChina School of Mechanical Engineering Sichuan UniversityChengdu610065SichuanChina College of water Resource&hydropower Sichuan UniversityChengdu610065SichuanChina Jin Shi Drill Tech Co. LtdTangshan063004HebeiChina pingdingshan Tianan Coal Mining Co. LTD.Pingdingshan467000HenanChina Xi'an research institute China Coal Technology&Engineering Group CorpXi'an710077ShaanxiChina

With the continuous development of deep oil and gas,minerals,geothermal resources,and other resources,there are increasingly more stringent requirements for *** particular,the ultra-highpressure dynamic seals of deep mining device need to be ***,considering the use of dynamic seals in unique deep mining environments,an ultra-high-pressure rotating combined dynamic seal was designed and developed and its sealing performance was experimentally measured and *** results show that the experimental device can operate stably under a pressure of up to150 MPa and a rotating speed of 76 r/min,and can also operate normally under a rotating speed of up to 140 r/min and a sealing pressure of 120 *** the operation of the ultra-high-pressure rotating combined dynamic seal,the sealing ring does not show obvious damage,which vouches for its sealing *** leakage of flow and pressure was detected in the all seal structures within the sealing pressure range of 0-150 ***,the dynamic sealing performance of the device is intact under ultra-high-pressure conditions and can be applied in deep mining environments at a certain *** research and development of this device can aid future deep energy exploration and exploitation.

关键词： Deep energy exploitation Ultra-high-pressure Rotating combination dynamic seal Development of test equipment

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Comparing phreatic evaporation at zero water table depth with water surface evaporation

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Journal of Arid Land 2018年第6期10卷 968-976页

作者： HU Shunjun gan Yongde chen Yongbao State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China State Key Laboratory of Simulation and Regulation of water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Central South institute of Metallurgical Geology Yichang 443003China

Salt-affected soils are mostly found in irrigated areas within arid and semi-arid regions where the groundwater table is *** of this type have become an increasingly severe problem because they threaten both the environment and the sustainable development of irrigated agriculture.A tool to estimate phreatic evaporation is therefore urgently required to minimize the salinization potential of salt-affected *** this context,phreatic evaporation at zero water table depth(E0)is a key parameter for establishing a model for calculating phreatic *** aim of this study was to explore the law of phreatic evaporation and to develop structurally rational empirical models for calculating phreatic evaporation,based on E0data of six types of soil(i.e.,gravel,fine sand,sandy loam,light loam,medium loam,and heavy loam)observed using the non-weighing lysimeter and water surface evaporation(E601)data observed using a E601 evaporator of same evaporation area with a lysimeter-tube at the groundwater balance station of the Weigan River Management Office in Xinjiang Uygur Autonomous Region,china,during the non-freezing period(April to October)between 1990 and *** relationship between E0and E601was analyzed,the relationship between the ratio of E0to E601and the mechanical compositions of different soils was presented,and the factors influencing E0were *** results of this study reveal that E0is not equal to *** fact,only values of the former for fine sand are close to those of the *** also show that E0values are related to soil texture as well as to potential atmospheric evaporation,the ratio of E0to E601and the silt-clay particle content(grain diameter less than 0.02 mm)is negatively exponentially correlated,and that soil thermal capacity plays a key role in phreatic evaporation at *** results of this analysis therefore imply that the treatment of zero phreatic depth is an essential requirement when constructing groundwater balance st

关键词： phreatic evaporation water table depth water surface evaporation soil texture soil thermal capacity

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Significant loss of soil inorganic carbon at the continental scale

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National Science Review 2022年第2期9卷 13-20页

作者： Xiao-Dong Song Fei Yang Hua-Yong Wu Jing Zhang De-cheng Li Feng liu yu-Guo Zhao Jin-Ling Yang Bing Ju Chong-Fa Cai Biao Huang Huai-yu Long Ying Lu yue-yu Sui Qiu-Bing wang Ke-Ning Wu Feng-Rong Zhang Ming-Kui Zhang Zhou Shi Wan-Zhu Ma gang Xin Zhi-ping Qi Qing-Rui Chang En Ci Da-gang yuan Yang-Zhu Zhang Jun-ping Bai jia-Ying chen Jie chen Yin-Jun chen yun-Zhong Dong Chun-Lan Han Ling Li Li-Ming liu jian-Jun Pan Fu-Peng Song Fu-Jun Sun Deng-Feng wang Tian-Wei wang Xiang-Hua Wei Hong-Qi Wu Xia Zhao Qing Zhou gan-Lin Zhang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences College of Advanced Agricultural Sciences University of Chinese Academy of Sciences College of resources and Environment Huazhong Agricultural University institute of Agricultural resources and Regional Planning Chinese Academy of Agricultural Sciences College of Natural resources and Environment South China Agricultural University Northeast institute of Geography and Agroecology Chinese Academy of Sciences College of Land and Environment Shenyang Agricultural University School of Land Science and Technology China University of Geosciences College of Land Science and Technology China Agricultural University College of Environmental and Resource Sciences Zhejiang University institute of Digital Agriculture Zhejiang Academy of Agricultural Sciences College of Agriculture Heilongjiang Bayi Agricultural University Tropical Crops Genetic resources institute Chinese Academy of Tropical Agricultural Sciences College of Natural resources and Environment Northwest A & F University College of resources and Environment Southwest University College of resources Sichuan Agricultural University College of resources and Environment Hunan Agricultural University institute of Agricultural Product Quality Standard and Testing research Tibet Academy of Agricultural and Animal Husbandry Sciences School of Agricultural Sciences Zhengzhou University institute of Agriculture Environment and resources research Shanxi Academy of Agricultural Sciences College of resources and Environment Henan Agricultural University College of resources and Environment China Agricultural University College of resources and Environmental Sciences Nanjing Agricultural University College of resources and Environment Shandong Agricultural University Agricultural College Guangxi University College of Grassland and Environment Science Xinjiang Agricultural University College of Geographical Science Qinghai Normal University

Widespread soil acidification due to atmospheric acid deposition and agricultural fertilization may greatly accelerate soil carbonate dissolution and ***,to date,few studies have addressed these ***,we use meta-analysis and nationwide-survey datasets to investigate changes in soil inorganic carbon(SIC) stocks in *** observe an overall decrease in SIC stocks in topsoil(0-30 cm)(11.33 g C m-2yr-1) from the 1980 s to the 2010 *** SIC stocks have decreased by～8.99±2.24%(1.37±0.37 Pg C).The average SIC losses across china(0.046 Pg C yr-1) and in cropland(0.016 Pg C yr-1) account for～17.6%-24.0% of the terrestrial C sink and 57.1% of the soil organic carbon sink in cropland,*** deposition and climate change have profound influences on SIC *** estimate that～19.12%-19.47% of SIC stocks will be further lost by *** consumption of SIC may offset a large portion of global efforts aimed at ecosystem carbon sequestration,which emphasizes the importance of achieving a better understanding of the indirect coupling mechanisms of nitrogen and carbon cycling and of effective countermeasures to minimize SIC loss.

关键词： china soil inorganic carbon stocks global change carbonate soil acidification

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