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| Spatial-temporal variation of agricultural non-point source pollution risk in Beijing-Tianjin-Hebei Region, China |
| Received:December 01, 2016 |
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| KeyWord:Beijing-Tianjin-Hebei;agricultural non-point source pollution risk;spatial-temporal variation |
| Author Name | Affiliation | E-mail | | WANG Lei | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | XIANG Bao | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | xiangbao@craes.org.cn | | SU Ben-ying | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | WANG Yue | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | FANG Guang-ling | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | HU Yu | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
College of Water Sciences, Beijing Normal University, Beijing 100875, China | | | PAN Li-bo | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | DAI Xia | Agricultural Non-point Source Pollution Control and Management Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
State Environment Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | |
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| Abstract: |
| In order to understand current situation of agricultural non-point source pollution (ANSP) in Beijing-Tianjin-Hebei region.GIS spatial analysis was used to research the temporal and spatial variation of ANSP in Beijing-Tianjin-Hebei region.The results showed that the application rate of chemical fertilizers increased year by year from 3.051 2×106 t in 2000 to 3.705 0×106 t in 2014.The application rate ochemical pesticide was relatively stable from 8.188×106 t in 2000 to 8.993×105 t in 2014;livestock and poultry manure discharge reduced from 2.35×108 t in 2000 to 1.96×108 t in 2014 in the region.The spatial distribution analysis showed that the amounts of chemical fertilizer pollution and livestock and poultry manure pollution (N,P) in high-risk counties respectively increased from 33,34,60 in 2000 to 72,78,112 in 2014.The chemical fertilizer pollution in high-rish area is mainly distributed in the central and eastern parts of the region (counties in Beijing,Tianjin,Tangshan,Qinhuangdao) and southern parts of the region (counties of Shijiazhuang,Hengshui,Handan).Nitrogen pollution high-risk areas are mainly distributed in large livestock cows,beef cattle and advantage of pig producing areas in Shijiazhuang,Baoding,Zhangjiakou,Chengde,Qinhuangdao and Handan;Phosphorus high-risk areas are mainly distributed in large livestock cows,beef cattle and poultry breeding areas in Shijiazhuang,Baoding,Langfang,Zhangjiakou,Chengde,Qinhuangdao and Handan.Our results indicated that chemical fertilizers and livestock and poultry manure pollution (N,P) in high-risk counties were increased rapidly and wide-spreading in Beijing-Tianjin-Hebei region.The excessive yield of crops is the main driving force to increasing application rate of chemical fertilizer.The reduction of cultivated land area and intensification of farming were the main reasons for the increase of nitrogen and phosphorus high-risk counties. |
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