摘要
基于GIS技术,利用农业非点源污染潜力指数系统(APPI)分析位于沙颍河流域的河南省西华县黄桥乡和西夏亭镇共46个行政村的农业非点源污染潜力和污染负荷的空间分布,识别优先控制区和优先控制因子,确定污染负荷来源类型。结果表明,总体而言,2010—2011年研究区主要污染因子为氮,主要污染源为农田养分流失,其次为畜禽养殖,分别占总污染负荷的52%和40%;大杨庄、张庄和前集是非点源污染发生的高风险区域和优先控制区域,APPI指数,单位面积氮、磷污染负荷和总污染负荷均位居所有行政村的前3位,畜禽养殖是造成这3个村污染较重的首要原因。
Based on GIS technology, the agricultural non-point source pollution potential index （APPI） system was applied to analysis of spatial distribution of agricultural non-point source pollution potentials and pollution loads of the Shaying River Catchment, a typical semi-arid area, consisting of 46 administration villages in Huangqiao Township and Xixiating Town of Xihua County, Henan Province. The APPI system was also applied to the identification of priority control areas and priority control factors, calculation of N and P loading intensities per unit area and total loads of every village, and determination of types of the sources of these pollution loads. Results show that as a whole, in the study area nitrogen is the major factor of the pollution, which mainly comes into the environment with nutrient loss from farmlands and then from rearing of livestock and potdtry, contributing 52% and 40%, respectively, to the total pollution load. Dayangzhuang, Zhangzhuang and Qianji are identified as high risk areas and priority control areas, ranking in the top of the list of villages in terms of APPI index, N and P pollution load per unit area and total pollution load, of which the main cause is rearing of livestock and poultry.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2013年第2期170-175,共6页
Journal of Ecology and Rural Environment
基金
国家水体污染控制与治理科技重大专项(2008ZX07103-005
2008ZX07010-004)
国家科技支撑计划(2012BAC10B02)
国家自然科学基金(40073030
40972092
41172121)
安徽省自然科学基金(090413083
1208085ME66)
安徽省教育厅重点基金(KJ2012A022)
安徽大学科研项目(KYXL2012050)
关键词
农业非点源污染
农业非点源污染潜力指数系统(APPI)
沙颍河流域
地理信息系统
agricultural non-point source pollution
agricultural non-point source pollution potential index （APPI）
Shaying River Catchment
geographical information system
