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STRENGTHENINGNON-POINT SOURCEPOLLUTION CONTROLTOPROMOTEAGRICULTURALGREEN DEVELOPMENT

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Frontiers of Agricultural Science and Engineering 2023年第4期10卷 503-509页

作者： Wen XU Jie ZHANG Linzhang YANG Xuejun LIU Fusuo ZHANG State key laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentNational Observation and Research Station of Agriculture Green Development(QuzhouHebei)China Agricultural UniversityBeijing 100193China College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China key laboratory of agro-environment in downstream of Yangtze plain(Ministry of Agriculture and Rural Areas) Jiangsu AcademyofAgricultural SciencesNanjing210014China.

This special issue is a compilation of papers addressing various aspects of non-point source pollution and agricultural green development in different regions around the *** of several papers were presented and discussed during a 2-day summit on Non-Point Source Pollution Control and Governance held in Dali,Yunnan Province,China,November 19-20,*** workshop was complemented by a half-day field trip to visit the Agricultural Green Production and Nonpoint Source Pollution Control Engineering Demonstration Base,as well as the Science and Technology Backyards in Gusheng Village,Dali *** workshop was jointly organized by the National Academy of Agriculture Green Development of China Agricultural University,Erhai Academy of Green Development,and Jiangsu Academy of Agricultural *** event included participation of over 20 scientists representing 10 different organizations,along with 40 Chinese graduate students.

关键词： Agricultural jointly representing

AGRICULTURAL GREEN DEVELOPMENT IN THE ERHAI LAKE BASIN-THE WAY FORWARD

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Frontiers of Agricultural Science and Engineering 2023年第4期10卷 510-517页

作者： Yong HOU Wen XU Wen-Feng CONG Kemo JIN Jiuliang XU Hao YING Shengrui WANG Hu SHENG Linzhang YANG Wenqi MA Oene OENEMA Zhengxiong ZHAO Fusuo ZHANG State key laboratory of Nutrient Use and Management College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China College of Resources and environmental Sciences Yunnan Agricultural UniversityKunming 650201China. Guangdong-Hong Kong Joint laboratory for Water Security Center for Water ResearchAdvanced Institute of Natural SciencesBeijing Normal UniversityZhuhai 519087China Lishui Institute of Ecological environment Nanjing UniversityNanjing 211200China. key laboratory of agro-environment in downstream of yangze plain Ministry of Agriculture and Rural Affairs of ChinaJiangsu Academy of Agricultural SciencesNanjing 210014China College of Resources and environmental Sciences Hebei Agricultural UniversityBaoding 071001China Wageningen environmental Research Wageningen University and Research6700 AA Wageningenthe Netherlands

Pollution of high-altitude lake basins by agriculture and rural activities,and the control of this pollution,have received increasing attention from academic research and government policy in *** of restrictions and regulations have been implemented to protect the surface,water *** restrictions and regulations have greatly impacted and transformed the agricultural systems and rural livelihoods surrounding these lake *** Erhai Lake basin in Yunnan Province as a case study,three main challenges were identified for concurrently decreasing pollution in the lake and increasing farmer *** is contended that scientifically-sound environmental protection policies and agricultural green development practices are key to reversing the current *** will help to protect the lake from pollution while smallholder farmers will be able to produce healthy food in an environmentally sustainable manner,and with a fair remuneration for all the services farmers providetothe society.

关键词： agriculturef af rmer income nitrogen phosphorus waterpollution

Unraveling natural aging-induced properties change of sludge-derived hydrochar and enhanced cadmium sorption site heterogeneity

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Biochar 2022年第1期4卷 615-634页

作者： Bingyu Wang Cenyao Shang Huifang Xie Haijun Sun Qiang Zhang Lihong Xue Filip M.G.Tack Deyi Hou Yanfang Feng Jörg Rinklebe Jiangsu key laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China key laboratory of agro-environment in downstream of Yangtze plain National Agricultural Experiment Station for Agricultural EnvironmentMinistry of Agriculture and Rural AffairsInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014China Co-Innovation Center for Sustainable Forestry in Southern China College of ForestryNanjing Forestry UniversityNanjing 210037China Department of Green Chemistry and Technology Ghent University9052 GhentBelgium School of environment Tsinghua UniversityBeijing 100084China School of Architecture and Civil Engineering Institute of Foundation EngineeringWaterand Waste-ManagementLaboratory of Soiland Groundwater-ManagementUniversity of WuppertalPauluskirchstraße 742285 WuppertalGermany

Hydrochar has potential applications in soil improvement and heavy metal *** would undergo the process of aging when introduced into the soil,altering its ***,recent studies have focused mainly on the artificial aging of hydrochar,which could not reveal the cumulative effect of multiple environmental ***,the periodical monitoring of the property and sorption behavior of hydrochar after amending soils is necessary to better understand the multifaceted mechanisms associated with the natural aging of *** study selected the sludge-derived hydrochar(SLHC)as a typical hydrochar and applied a 16-month rice-wheat-rice rotation to mimic the natural aging of hydrochar,focusing on changing properties and cadmium(Cd)sorption and literature contrast between aging strategies and biochar *** porosity,O abundance,and ash content of 16-month aged SLHC increased by 37%,47%,and 8.5%,respectively,facilitating Cd sorption due to surface complexation,pore sorption,and *** sorption percentage of Cd to SLHC was in the range of 11-14%for SLHC-A0 and increased to 17-31%for SLHC-A4 and 20-32%for SLHC-A16 after natural *** natural aging of SLHC induced by ash content played an essential role in Cd sorption site *** regression analysis showed that aging strategies on sorption behavior significantly differed between ***,studies involving natural aging with multiple environmental factors are preferred over those involving chemical or biological *** studies should continue to explore the mechanisms of natural aging-induced heavy metal sorption between hydrochar and *** results improve insights to appraise the potential of SLHC as soil amendments to alleviate the adverse effects of heavy metal contamination and provide an essential basis for researchers and staff in soil management and environmental prevention.

关键词： Sludge-derived hydrochar Hydrothermal carbonization Natural aging Physicochemical properties Sorption behavior Cadmium

CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

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Frontiers of Agricultural Science and Engineering 2023年第4期10卷 541-552页

作者： Wenchao LI Wen XU Gaofei YIN Xulin ZHANG Zihan ZHANG Bin XI Qiuliang LEI Limei ZHAI Qiang ZHANG Linzhang YANG Hongbin LIU College of Resources and environmental Sciences State Key Laboratory of North China Crop Improvement and RegulationKey Laboratory for Farmland Eco-Environment of HebeiHebei Agricultural UniversityBaoding 071001China. College of Resources and environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China Rural Energy and environment Agency Ministry of Agriculture and Rural AffairsBeijing 100125China. key laboratory of Nonpoint Pollution Control(Ministry of Agriculture and Rural Affairs) Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Heze Kingenta Ecological Engineering Co. Ltd.Heze 274000China key laboratory of agro-environment in downstream of Yangtze plain(Ministry of Agriculture and Rural Affairs) Jiangsu Academy of Agricultural SciencesNanjing 210014China.

Agricultural non-point source pollution is increasingly an important issue affecting surface water ***,the majority of the studies on nitrogen loss have focused on the agricultural field scale,however,the response of surface water quality at the watershed scale into the nitrogen loss at the field scale is poorly *** present study systematically reviewed the critical processes and major factors that nitrogen transport from farm fields to surface water *** critical processes of farmland nitrogen entering surface water bodies involve the processes of nitrogen transport from farmland to ditches and the transformation processes of nitrogen during migration in ditches/*** transport from farmland to ditches is one of the prerequisites and critical processes for farmland nitrogen transport to surface water *** transformation of nitrogen forms in ditches/rivers is an intermediate process in the migration of nitrogen from farmland to surface water *** loss from farmland is related to soil storage and exogenous ***,nitrogen input management should not only consider the current input,but also the contribution of soil storage due to the historical ***/rivers have a strong retention capacity for nitrogen,which will significantly affect the process of farmland nitrogen entering surface water *** factors affecting nitrogen transformation in river/ditches can be placed in four categories:(1)factors affecting hydraulic retention time,(2)factors affecting contact area,(3)factors affecting biological activity,and(4)forms and amount of nitrogen loading to river/*** systems are more biologically(including plants and microbes)active than rivers with biological factors having a greater influence on nitrogen *** developing pollution prevention and control strategies,ecological ditches can be constructed to increase biological activity and reduce the amount of surplus ni

关键词： nitrogen loss from soil transformation farm field scale watershed scale

Raw material of water-washed hydrochar was critical for the mitigation of GHGI in infertile paddy soil:a column experiment

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Biochar 2021年第3期3卷 381-390页

作者： Yuanyuan Wu Pengfu Hou Zhi Guo Haijun Sun Detian Li Lihong Xue Yanfang Feng Shan Yu Linzhang Yang Baoshan Xing Jiangsu Academy of Agricultural Sciences Key Laboratory of Agro-Environment in Downstream of Yangze PlainMinistry of Agriculture and Rural Affairs of the People’s Republic of ChinaNanjing 210014China Co-Innovation Center for Sustainable Forestry in Southern China College of ForestryNanjing Forestry UniversityNanjing 210037China School of the environment and Safety Engineering Jiangsu UniversityZhenjiang 212001China Stockbridge School of Agriculture University of MassachusettsAmherstMA 01003USA

Water washing is a meaningful method to improve the surface’characteristic of hydrochar produced using hydrothermal carbonization and minimize the negative effect on crop ***,the greenhouse effect resulting from water-washed hydrochar application was unclear in agricultural ***,the effect of water-washed hydrochar on methane and nitrous oxide emissions was analyzed in an infertile paddy soil based on a soil-column ***-derived hydro-char(WSH)and wheat straw-derived hydrochar(WWH)after water washing were selected and applied with low(5‰,w/w;8.5 t ha^(−1))or high addition rate(15‰,w/w;25.5 t ha^(−1)).The study indicated that water-washed hydrochar could increase the grain yield;the difference between WWH with 5‰application rate and CKU treatments was *** signifi-cantly decreased CH4 and N2O emissions in comparison with WWH addition *** the same material,there were trends in reducing greenhouse gas(GHG)emissions at low application rate,although the differences were not *** with all treatments,WSH with 5‰application rate achieved the lowest seasonal emissions for both *** mcrA gene was the critical factor affecting CH4 emission;soil NO_(3)^(−)-N concentration and the copy numbers of nirK,nirS,and nosZ jointly affected N2O *** from the high yield and low global warming potential,GHG emission intensity(GHGI)at low application rate was lower than at high application rate for ***,the response of GHG emissions to water-washed hydrochar varies with the derived feedstock;WSH is a good additive for the mitigation of GHGI.

关键词： Biowaste Hydrothermal carbonization Physical amendment Global change Microbial functional genes

Effects of surface heating on precipitation over the Tibetan Plateau and its eastern margin

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Research in Cold and Arid Regions 2023年第5期15卷 230-238页

作者： MaoShan Li YuChen Liu Zhao Lv YongHao Jiang Pei Xu YaoMing Ma FangLin Sun School of Atmospheric Sciences Plateau Atmosphere and Environment Key Laboratory of Sichuan ProvinceChengdu Plain Urban Meteorology and Environment Observation and Research Station of Sichuan ProvinceChengdu University of Information TechnologyChengduSichuan 610225China Heilongjiang Branch of CAAC Northeast Regional Administration HarbinHeilongjiang 150079China key laboratory of Tibetan environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesCAS Center for Excellence in Tibetan Plateau Earth SciencesBeijing 100101China key laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Chinese Academy of SciencesLanzhouGansu 730000China

The high terrain of the Tibetan Plateau(TP)has a very important impact on the weather and climate of China,East Asia,South Asia,and even the Northern ***,in recent years,the reasons for the decrease in precipitation in the southeastern edge of the plateau have resulted in cutting-edge research regarding the impact of the TP and its surrounding areas on downstream weather and *** this study,the spatial and temporal distribution of surface heat flux and precipitation were analyzed from 1998 to 2022,and the possible mechanism of the decrease of precipitation in the eastern edge of the plateau is *** main conclusions are as follows:The annual average sensible heat flux in the TP and its east side is positive,with an average of 33.73 W/m^(2).The annual average latent heat flux is positive,with an average of 42.71 W/m^(2).Precipitation has a similar annual average and seasonal distribution,with modest amounts in the northwest and substantial amounts in the *** average annual accumulated precipitation is 670.69 *** first mode of the Empirical Orthogonal Function(EOF)shows that sensible heat flux decreases first,then increases,and then finally decreases during 1998–*** modes show the opposite trend in middle part of the *** latent heat flux initially decreases,then increases,and finally decreases in the western plateau and near Sichuan *** mode,however,displays the opposite tendency throughout the rest of the *** precipitation in the north and south sides of the plateau has decreased since 2013,which is consistent with the changing trend of sensible heat *** the rest of the region,the change trend is not *** sensible heat of the main body of the plateau and its east side and Sichuan Basin is negatively correlated with precipitation,that is,when sensible heat flux of the main body of the plateau and its east side and Sichuan Basin is more(less),local precipitation is less(more).The latent heat

关键词： The Tibetan Plateau Surface heating Precipitation EOF Singular value decomposition(SVD)

Effective Phosphate adsorption by LaFeO3 nanoparticles uploaded onto biochar

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Effective Phosphate adsorption by LaFeO3 nanoparticles uploa...

Occurrence, polarity and bioavailability of dissolved organic matter in the Huangpu River,China

第二届全国环境纳米技术及生物效应学术研讨会

作者： Yang Bei Xue lihong He shiying Liu Hao Yanglinzhang key laboratory of agro-environment in downstream of Yangtze plain Ministry of AgricultureInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural Sciences State laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research Institute

In this paper,straw biochar was firstly modified with lanthanum ferrite *** methods were developed to prepare LaFeO/***-step impregnation(S-E) and two-step impregnation(B-E).The LaFeO/biochar derived from the two methods was utilized to remove phosphate from *** means of SEM,BET,VSM,XRD and *** effects of the different preparation methods on the morphology,magnetism,and structure of he samples are *** results imply the biochar is successfully modified by LaFeO,*** maximum adsorption capacity was 40.99 mg/g(S-E) and 40.11 mg/g(B-E),implying that LaFeO/biochar is an effective adsorbent for phosphate removal Pseudo-first-order,*** and Freundlich models were used to simulate the kinetic data and equilibrium adsorption isotherms LaFeO/biochar exhibits an outstanding adsorption performance for phosphate with pH values ranging from 2 to 10,and the adsorption performance decreases as the pH *** a magnet can effectively recollect the adsorbent,and a negligible adsorption capacity loss was observed after five adsorption-desorption cycles.

关键词： LaFeO3 biochar preparation methods Phosphate adsorption

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Journal of environmental Sciences 2014年第9期26卷 1843-1850页

作者： Qianqian Dong Penghui Li Qinghui Huang Ahmed A.Abdelhafez Ling Chen key laboratory of Yangtze River Water environment of the Ministry of Education College of Environmental Science and EngineeringTongji University Soils Water and Environment Research InstituteAgricultural Research CenterGizaEgypt

Dissolved organic matter （DOM） plays an important role in biogeochemical cycles in aquatic ecosystem. To investigate the characteristics of DOM in Huangpu River {the last tributary of the Yangtze River）, surface water samples were collected along the river from December 2011 to June, 2013. The concentrations of dissolved organic carbon （DOC）, the absorbance and fluorescence spectrum of DOM in water samples were measured. Fluorescent DOM in the Huangpu River was decomposed into four components by the parallel factor analysis （PARAFAC）, including one humic-like substance and three protein-like substances. It showed that high spatial variability of DOC concentration was observed in the upstream water compared to the downstream water, and so did the absorbance coefficients of chromophoric dissolved organic matter and the total fluorescence intensities of different PARAFAC components of DOM. Furthermore, there was a large difference between the polarity and bioavailability of DOM in the Huangpu River. Polar compounds dominated tyrosine-like component of fluorescent DOM in all seasons. Tryptophan-like and humic-like substances had more polar fraction in summer and autumn than those in winter, while aromatic protein-like materials had the highest polar fraction in winter. Almost all of fluorescent DOM components were refractory in spring, while less than 20% of fluorescent DOM in average were biodegradable within 4 weeks in other seasons. We concluded that the spatial variation in the abundance of DOM in the Huangpu River is mainly affected by the water discharges from the Hangjiahu plain and the seasonal difference in polarity and bioavailability of DOM is largely determined by its origins.

关键词： Chromophoric dissolved organicmatterDissolved organic carbonPolarityBioavailabilityAbsorbance coefficientsFluorescence

Microbial community composition and environmental response characteristics of typical brackish groundwater in the North China plain

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China Geology 2023年第3期6卷 383-394页

作者： Huai-sheng Zhang Wu-tian Cai Feng Guo Chao Bian Fu-dong Liu Lei Zhang Jin-wei Liu Miao Zhao Center for Hydrogeology and environmental Geology Survey CGSBaoding 071051China National Research Center for Geoanalysis Key Laboratory of Eco-GeochemistryMinistry of Natural ResourcesBeijing 10037China Third Hydrological Engineering Geological Brigade Hebei Bureau of Geology and Mineral ResourcesHengshui 053000China

To reveal the microbial community composition of regional shallow porous brackish groundwater and its response characteristics to groundwater environment,the first and second aquifers in Taocheng District,Hengshui City were selected,and 10 groundwater source samples were collected for hydrochemical analysis and microbial 16S RNA gene V4-V5 regional *** results showed that the shallow brackish groundwater in the study area is weakly alkaline and has high ion *** hydrochemical types are SO_(4)·Cl-Na·Mg type and HCO3·Cl-Na·Mg type as a *** spatial zonation of the abundance and diversity of groundwater microorganisms is *** number of endemic bacteria in groundwater from upstream,midstream to downstream is 11,135 and 22 respectively,with a total of 22 *** is the most dominant in groundwater level(38.82%-86.88%),and there are obvious differences in different *** the genus level,the main dominant species in each group and sample are Pseudomonas and *** terms of composition difference,Pseudohongiella,Pseudorhodobacter and Limnohabitans are the representatives of UR,MR and *** the whole,the composition of flora in groundwater in the study area is sensitive and closely related to hydrochemical *** abundance is affected by alkaline and high salinity environmental indicators,while species diversity is related to depth and dissolved oxygen in weak reduction environment.

关键词： Groundwater microorganism Microbial Endemic bacteria Biochemistry Pseudomonas Hydrogenophage Brackish groundwater environmental response Hydrogeological survey engineering environmental geological survey engineering