Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (30): 61-66.doi: 10.11924/j.issn.1000-6850.casb16090062

Special Issue: 土壤重金属污染 现代农业发展与乡村振兴

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Agricultural Non-point Source Pollution Loads: Spatial Distribution and Risk Assessment

  

  • Received:2016-09-12 Revised:2017-10-16 Accepted:2016-12-23 Online:2017-10-31 Published:2017-10-31

Abstract: In order to study the agricultural non-point source pollution and risk assessment of spatial load, we summarized the latest research progress in recent 10 years at home and abroad, founding that there is more research in the agricultural non-point source pollution spatial distribution and risk assessment, including pollution source factor and migration factor on the spatial distribution of progress, but studies on the comprehensive risk assessment is a lack of research, distribution and correlation of the pollution load are still inadequate, so it is necessary to study on division and management measures to control pollution load classification.This research introduces the current status of agricultural non-point source pollution, analyzes the sources of agricultural non-point source pollution, summarized and compared agricultural non-point source pollution estimation model in distributed models. Agricultural non-point source pollution spatial distribution characteristics respectively from the regional distribution of rainfall ,soil erosion and different types of land use were analyzed ; finally, the result about evaluation on different regional agriculture non-point source pollution risk in China were summarized; and put forward the future research emphasis of agricultural non-point source pollution spatial distribution and risk assessment.