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agricultural sciences in china 2010年第12期9卷 1807-1815页

作者： WANG Ya-jing, BI Yu-yun and GAO Chun-yu institute of agricultural resources and regional planning, chinese academy of agricultural sciences, beijing 100081, P.R.china institute of agricultural resources and regional planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

The study was undertaken to evaluate the collectable and usable volume of existing straw resources, its suitability for different ways of utilization and fully reorganization of its development potential in china. Based on the results on the stubble heights of major crops in the huang-Huai-Hai area （the area along the Yellow River, Huai River, and Hai River）, the evaluation of the collectable and usable coefficients, and the collectable and usable volumes of various straw resources in china were worked out during 2005. The respective collectable and usable volumes of straw resources were worked out on the basis of suitability as fuel, feed, fertilizer, and base material for edible mushrooms. The total collectable and utilizable quantity of straw in china was 685 950 000 t, and the mean collection coefficient was 0.81 during 2005. The quantity of straw residue and wasted straw accounted for 19%. The collectable and utilizable quantities of grain, cash crop, and other crop straw were 492 310 000, 162 610 000, and 31 030 000 t which accounted for 71.77, 23.71, and 4.52%, respectively of the total collectable and utilizable quantity of straw. The quantity of straw which could be used as fuel was 635 000 000 t, which accounted for 92.63% of total quantity of the straw in the country during 2005. Among the total quantity of collectable and utilizable straw in china during 2005, the quantities of straw suitable and unsuitable for being processed as feedstuff were 587 640 000 and 98 310 000 t, which accounted for 85.67 and 14.33%, respectively. The quantity of straw residue returned to the field and collectable and utilizable straw for direct field restoration was 616 000 000 t, which accounted for about three-fourths of the total straw yield, while the quantity of straw for cultivation of edible mushrooms and industrial processing was about 587 000 000 t, which accounted for more than 85% of the total collectable and utilizable straw. The evaluation results indicate that t

关键词： china straw resources collectable and utilizable quantity suitability assessment

regional differences and determinants of built-up area expansion in china

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Science china Earth sciences 2007年第12期50卷 1835-1843页

作者： huang JiKun1,2,ZHU LiFen3,1 & DENG XiangZheng1,2 1 Center for chinese agricultural Policy,chinese academy of sciences,beijing 100101,china 2 institute of Geographic sciences and Natural resources Research,chinese academy of sciences,beijing 100101,china 3 Research Center of the Economy of the Upper Reaches of the Yangtze River,Chongqing Technology and Business University,Chongqing 400067,china Center for chinese agricultural Policy Chinese Academy of Sciences Beijing China institute of Geographic sciences and Natural resources Research Chinese Academy of Sciences Beijing China Research Center of the Economy of the Upper Reaches of the Yangtze River Chongqing Technology and Business University Chongqing China

Based on remote sensing data on land use provided by the chinese academy of sciences and socio-economic data collected by the authors,this paper analyzes the trends and regional differences in built-up area(BUA) expansion in china from the late 1980s to 2000,and empirically estimates the major determinants of BUA expansion in different regions in 1996―*** 1989―2000,although china's overall BUA expansion accelerated,the trends differed significantly among *** expansion in the central and western regions accelerated significantly,but it slowed down considerably in the east-ern *** estimation results from our econometric analysis reveal that BUA expansion in the eastern region reached a period when economic growth had no further significant impact on per capita BUA,the land utilization in this region has become more intensive with further expansion of the *** the central and western regions,the BUA has expanded remarkably due to the relatively more flexible land development policies and the relatively cheap land ***,as the econ-omy continues to grow rapidly,policies relating to BUA expansion and cultivated land reductions may face more serious challenges in the central and western regions.

关键词： built-up area, land use, regional difference, determinants, china

Changes in albedo and its radiative forcing of grasslands in East Asia drylands

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Ecological Processes 2024年第1期13卷 237-251页

作者： Qingsong Zhu Jiquan Chen Liangxu Wu Yuting huang Changliang Shao Gang Dong Zhe xu Xianglan Li State Key Laboratory of Remote Sensing Science College of Global Change and Earth System Science Faculty of Geographical ScienceBeijing Normal University Department of Geography Environment and Spatial Sciences Michigan State University State Key Laboratory of Efficient Utilization of Arid and Semi-Arid Arable Land in Northern china National Hulunber Grassland Ecosystem Observation and Research Station Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences School of Life Science Shanxi University

Background Grasslands in drylands are increasingly influenced by human activities and climate change, leading to alterations in albedo and radiative energy balance among others. Surface biophysical properties and their interactions change greatly following disturbances. However, our understanding of these processes and their climatic impacts remains limited. In this study, we used multi-year observations from satellites and eddy-covariance towers to investigate the response of albedo to variables closely associated with human disturbances, including vegetation greenness（EVI） and surface soil volumetric water content（VWC）, as well as snow cover and clearness index（Ta） for their potential *** EVI and VWC during the growing season were the primary factors influencing albedo. EVI and VWC were negatively correlated with albedo, with VWC's total direct and indirect impacts being slightly smaller than those of EVI. During the non-growing season, snow cover was the most influential factor on albedo. VWC and Ta negatively affected albedo throughout the year. We estimated the impact of variations in EVI and VWC on climate to be in the range of 0.004 to 0.113 kg CO2m-2yr-1in *** This study indicates the significant impacts of climate change and human disturbances on vulnerable grassland ecosystems from the perspective of altered albedo. Changes in vegetation greenness and soil properties induced by climate change and human activities may have a substantial impact on albedo, which in turn feedback on climate change, indicating that future climate policies should take this factor into consideration.

关键词： Albedo Global warming potential Grassland Disturbance

A bifunctional wood membrane modified by MoS_(2)/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation

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Science china Chemistry 2024年第6期67卷 2111-2120页

作者： Ziwei Cui Jianfei Wu Haoran Li Yaning xu Tiantian Wu Lixing Kang Qing huang Yahui Cai Jianzhang Li Dan Tian Co-Innovation Center of Efficient Processing and Utilization of Forest resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing210037China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China State Key Laboratory of Efficient Production of Forest resources Beijing Forestry UniversityBeijing100083China

Interfacial solar evaporation technology is considered one of the most promising strategies for alleviating the scarcity of freshwater ***,solar-driven evaporation technology cannot eliminate the pollutants in the residual *** solve this problem,we have prepared a two-in-one solar-driven evaporation/photocatalysis system by decorating MoS_(2)/covalent organic framework(COF)heterojunctions on wood(MoS_(2)/COF-wood).Thanks to the unique porous structure of wood,it provides a strong guarantee for water transport and vapor release during the evaporation *** introduction of MoS_(2) and COFs can promote the breaking of hydrogen bonds between water molecules,which leads to a significant decrease in the enthalpy of evaporation,achieving a water evaporation rate as high as 2.17 kg m^(-2)h^(-1)under 1 sun ***,the resulting MoS_(2)/COF-wood exhibits good salt resistance and *** addition,the heterojunctions formed between COFs and MoS_(2) can effectively inhibit charge carrier complexation and improve the photocatalytic degradation ability of pollutants(over 99%).This study highlights the construction strategy of bifunctional wood-based materials for freshwater production and wastewater remediation.

关键词： covalent organic framework MoS_(2) wood photocatalysis solar-driven evaporation

Response of Rice Varieties to Bound Residues of Metsulfuron-Methyl in a Paddy Soil

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Pedosphere 2007年第4期17卷 487-492页

作者： LI Zhao-Jun WANG Hai-Zhen xu Jian-Ming WU Jian-Jun MA Guo-Rui institute of Soil and Water resources and Environmental Science Zhejiang University Hangzhou 310029 （China）. institute of agricultural resources and regional planning Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling Chinese Academy of Agricultural Sciences Beijing 100081 （China）

Metsulfuron 甲基是广泛地使用的 sulfonylurea 除草剂之一。然而，近似，应用 metsulfuron 甲基的一半可以是在土壤绑了残余留下。为了描绘大米的反应，到在土壤， acetolactate synthase (ALS ) 的活动，超级氧化物 dismutase (草皮)... 详细信息

Metsulfuron 甲基是广泛地使用的 sulfonylurea 除草剂之一。然而，近似，应用 metsulfuron 甲基的一半可以是在土壤绑了残余留下。为了描绘大米的反应，到在土壤， acetolactate synthase (ALS ) 的活动，超级氧化物 dismutase (草皮) ，过氧化物酶(邮政部门) ，和过氧化氢酶(猫) 的剩余 metsulfuron 甲基的植物在在危险性不同到除草剂的二个大米变化被调查。在在 Xiushui 63 的叶子和根的这些酶的活动的变化，一个敏感米饭变化，比在抗性品种 Zhenong 952 的那些大。不管变化，在酶活动的变化比在叶子在根是更大的。ALS 和猫的活动减少了，当 SOD 活动随土壤的 metsulfuron 甲基(BRM ) 的界限残余的数量的增加增加了时。邮政部门活动在 0.025 mg kg 的 BRM 水平增加了 ? 1，但是在 0.05 mg kg 的 BRM 水平减少了 ? 1。结果证明 sulfonylurea 除草剂的界限残余可以影响米饭植物的新陈代谢。

关键词：水稻土乙酰乳酸酶活性过氧化酶土壤学

Identification of a natural PLA2 inhibitor from the marine fungus Aspergillus sp.c1 for MAFLD treatment that suppressed lipotoxicity by inhibiting the IRE-1a/XBP-1s axis and JNK signaling

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Acta Pharmaceutica Sinica B 2024年第1期14卷 304-318页

作者： Yong Rao Rui Su Chenyan Wu Xingxing Chai Jinjian Li Guanyu Yang Junjie Wu Tingting Fu Zhongping Jiang Zhikai Guo Congjun xu Ling huang Key Laboratory of Tropical Biological resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikou 570200China Hainan Key Laboratory of Tropical Microbe resources Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural Sciences&Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan ProvinceHainan Institute for Tropical Agricultural ResourcesHaikou 571101China School of Pharmaceutical sciences Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSun Yat-sen UniversityGuangzhou 510275China Laboratory Animal Center of Guangdong Medical University Dongguan 523808China

Lipotoxicity is a pivotal factor that initiates and exacerbates liver injury and is involved in the development of metabolic-associated fatty liver disease(MAFLD).However,there are few reported lipotoxicity ***,we identified a natural anti-lipotoxicity candidate,HN-001,from the marine fungus Aspergillus ***-001 dose-and time-dependently reversed palmitic acid(PA)-induced hepatocyte *** protection was associated with IRE-1a-mediated XBP-1 splicing inhibition,which resulted in suppression of XBP-1s nuclear translocation and transcriptional *** of XBP-1s attenuated lipotoxicity,but no additional ameliorative effect of HN-001 on lipotoxicity was observed in XBP-1s knockdown ***,the ER stress and lipotoxicity amelioration was associated with *** HN-001 and the PLA2 inhibitor MAFP inhibited PLA2 activity,reduced lysophosphatidylcholine(LPC)level,subsequently ameliorated *** contrast,overexpression of PLA2 caused exacerbation of lipotoxicity and weakened the anti-lipotoxic effects of ***,HN-001 treatment suppressed the downstream pro-apoptotic JNK *** vivo,chronic administration of HN-001(i.p.)in mice alleviated all manifestations of MAFLD,including hepatic steatosis,liver injury,inflammation,and *** effects were correlated with PLA2/IRE-1a/XBP-1s axis and JNK signaling *** data indicate that HN-001 has therapeutic potential for MAFLD because it suppresses lipotoxicity,and provide a natural structural basis for developing anti-MAFLD candidates.

关键词： Lipotoxicity MAFLD ER stress IRE-1a XBP-1s JNK PLA2

Spatial-Temporal Changes in Grain Production, Consumption and Driving Mechanism in china

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Journal of Integrative Agriculture 2013年第2期12卷 374-385页

作者： xu Shi-wei WU Jian-zhai SONG Wei LI Zhi-qiang LI Zhe-min KONG Fan-tao Key Laboratory of Digital agricultural Early-Warning Technology Ministry of Agriculture/Agriculture Information Institute Chinese Academy of Agriculture Sciences institute of Geographic sciences and Natural resources Research Chinese Academy of Sciences

The spatial-temporal patterns of grain production and consumption have an important influence on the effective national grain supply on condition of tight balance in the total grain amount in china. In this paper, we analyze the spatial-temporal pattems of grain production, consumption and the driving mechanism for their evolution processes in china. The results indicate that both gravity centers of grain production and consumption in china moved toward the northern and eastern regions, almost in the same direction. The coordination of grain production and consumption increased slightly from 1995 to 2007 but decreased from 2000 to 2007. There is a spatial difference between the major districts of output increase and the strong growth potential in grain consumption, which indicates an increasing difficulty in improving the regional coordination of grain production and consumption. The movement of the gravity center of grain production is significantly correlated with regional differences in grain production policy, different economic development models, and spatial disparity of land and water resource use. For grain consumption, the main driving factors include rapid urbanization, the upgrade of food consumption structure, and distribution of food industries.

关键词： grain production grain consumption gravity center driving mechanism

Crop Yield and Soil Responses to Long-Term Fertilization on a Red Soil in Southern china

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Pedosphere 2009年第2期19卷 199-207页

作者： ZHANG Hui-Min WANG Bo-Ren xu Ming-Gang FAN Ting-Lu Key Laboratory of Plant Nutrition and Nutrient Cycling Ministry of Agriculture of China and Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 China Department of Resource and Environment Northwest Sci-Tech University of Agriculture and Forestry Yangling 712100 China Department of Agronomy Henan University of Science and Technology Luoyang 471003 China

A 15-year fertilization experiment with different applications of inorganic N,P and K fertilizers and farmyard manure (M)was conducted to study the yield and soil responses to long-term fertilization at Qiyang,Hunan Province,china. Average grain yields of wheat and corn(1 672 and 5 111 kg ha-1,respectively)for the treatment NPKM were significantly higher than those(405 and 310 kg ha-1)of the unfertilized control and single inorganic fertilizer *** with the corresponding initial values of the experiment,all treatments showed a yield decline of 9 to 111 kg ha-1 year-1 in wheat and 35 to 260 kg ha-1 year-1 in corn,respectively,and a significant pH decline of 0.07 to 0.12 pH year?1,except for the treatments PK and *** long-term fertilization,the soil organic C,soil available P,exchangeable Ca2+ and Mg2+and available Cu2+and Zn2+contents were higher in the treatment NPKM than in the treatments applied with inorganic fertilizer *** to the treatment NPK,the treatment NPKM,where manure partially replaced inorganic N,had a positive impact on arresting the decline of soil *** improved grain yields of wheat and corn, suggesting that application of NPK fertilizer in combination with farmyard manure is important to maintain soil fertility and buffering capacity in red soil.

关键词：土壤有机碳长期施肥作物产量华南地区红壤土壤pH值土壤速效磷答复

A Methodology Framework for regional Land-use Change Studies based on Landsat TM images: A Case Study in Northeast china

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chinese Journal of Population,resources and Environment 2004年第4期2卷 3-11页

作者： Deng Xiangzheng , huang Shumin , Zhan Jinyan & Zhao Tao Center for chinese agricultural Policy, chinese academy of sciences, beijing 100101 institute of Geographical sciences and Natural resources Research, chinese academy of sciences, beijing 100101 Anthropology Department, Iowa State University, Ames, Iowa 50010-1050, USA, Center for chinese agricultural Policy Chinese Academy of Sciences Beijing 100101 China institute of Geographical sciences and Natural resources Research Chinese Academy of Sciences Beijing 100101 China Anthropology Department Iowa State University Ames IA 50010-1050 United States

Land-use change is an important aspect of global environment change. It is, in a sense, the direct result of human activities influencing our physical environment. This paper analyzed the land-use change in Northeast china during 1985-2000 based on Landsat TM images. It divides Northeast china into five land-use zones based on the dynamic degree model of land-use: woodland/grassland-arable land conversion zone, dry land-paddy field conversion zone; urban expansion zone, interlocked zone of farming and pasturing and reclamation and abandon zone. The findings include the obvious increase of cropland area, paddy field and dry land increased by 75 and 276 thousand hm2 respectively; urban areas expanded rapidly, areas of town and rural residence increased by 76.8 thousand hm2; areas of forests and grassland decreased sharply with the amounts of 1399 and 1521 thousand hm2 respectively; areas of water body and unused land increased by 148 and 514 thousand hm2 respectively. This paper also discusses the

关键词： spatial pattern land use land-use change driving force Northeast china