A review of rapid transport of pesticides from sloping farmland to surface waters: Processes and mitigation strategies

查看全文 作　　者：Xiangyu [1]Tang;Bo [1]Zhu;Hidetaka [2]Katou

机构地区：[1]Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;[2]National Institute for Agro-Environmental Sciences,Kannondai 3-1-3,Tsukuba 305-8604,Japan

出　　处：《Journal of Environmental Sciences》索引2012年第24卷第3期,共11页

基　　金：supported by the 'Hundred Talents Program' of the Chinese Academy of Sciences (No. 724);the National Natural Science Foundation of China (No.41171372);the National Key Technology R&D Program of the Ministry of Science and Technology of China(No. 2011BAC09B05) 摘　　要：Pesticides applied to sloping farmland may lead to surface water contamination through rapid transport processes as influenced by the complex topography and high spatial variability of soil properties and land use in hilly or mountainous regions. However, the fate of pesticides applied to sloping farmland has not been sufficiently elucidated. This article reviews the current understanding of pesticide transport from sloping farmland to surface water. It examines overland flow and subsurface lateral flow in areas where surface soil is underlain by impervious subsoil or rocks and tile drains. It stresses the importance of quantifying and modeling the contributions of various pathways to rapid pesticide loss at catchment and regional scales. Such models could be used in scenario studies for evaluating the effectiveness of possible mitigation strategies such as constructing vegetated strips, depressions, wetlands and drainage ditches, and implementing good agricultural practices. Field monitoring studies should also be conducted to calibrate and validate the transport models as well as biophysical-economic models, to optimize mitigation measures in areas dominated by sloping farmland. 关键词：减灾战略快速运输坡耕地地表水农药进程审查土壤理化性质

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A review of rapid transport of pesticides from sloping farmland to surface waters: Processes and mitigation strategies

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