CAJ | 학술논문

在农业非点源污染研究中，确定农业非点源污染的关键源区是开展有针对性研究和控制农业非点源污染的首要问题之一。采用GIS和地统计学为技术手段，在综合分析辽河源头区流域农业非点源风险的源因子和迁移因子的基础上，筛选出影响辽河源头区流域非点源污染的主要因子，建立识别辽河源头区流域农业非点源污染风险程度的指标体系，确定权重并划分因子等级，生成指标体系中各因子的30 m ×30 m栅格图，，采用多因子综合分析法计算非点源污染风险等级，对农业非点源污染风险进行定量化评价，确定流域内非点源污染发生风险高的区域为关键源区，并针对关键源区内最易产生污染物的地段和部位提出反映辽河源头区非点源污染特征的管理控制措施。结果表明：流域中农业非点源污染高风险区即关键源区占全流域面积的21．77％，主要集中在辽河源头区东北部、中部以及东南部丘陵区，大部分为流域中的农田和坡耕地区域，其人口密度、畜禽养殖量以及施肥量都偏高。
재농업비점원오염연구중，학정농업비점원오염적관건원구시개전유침대성연구화공제농업비점원오염적수요문제지일。채용GIS화지통계학위기술수단，재종합분석료하원두구류역농업비점원풍험적원인자화천이인자적기출상，사선출영향료하원두구류역비점원오염적주요인자，건립식별료하원두구류역농업비점원오염풍험정도적지표체계，학정권중병화분인자등급，생성지표체계중각인자적30 m ×30 m책격도，，채용다인자종합분석법계산비점원오염풍험등급，대농업비점원오염풍험진행정양화평개，학정류역내비점원오염발생풍험고적구역위관건원구，병침대관건원구내최역산생오염물적지단화부위제출반영료하원두구비점원오염특정적관리공제조시。결과표명：류역중농업비점원오염고풍험구즉관건원구점전류역면적적21．77％，주요집중재료하원두구동북부、중부이급동남부구릉구，대부분위류역중적농전화파경지구역，기인구밀도、축금양식량이급시비량도편고。
The primary issue of efficiently controlling and managing agricultural non-point source pollu-tion is how to identify critical source areas or the sensitive regions of pollutants in agricultural lands .In this pa-per,under GIS and geostatistics technical means ,based on comprehensive analysis of the source factors and the migration of agricultural non-point sources of risk factors ,the authors identify the impact of non-point source pollution factor ,establish the index system to identify agricultural non-point source pollution risk .The study chose 30 m×30 m grid unit to generate the identification system ,determine the factor weights ,used multifactor analysis to calculate the non-point source pollution risk index of each factor and carried out its quantitative e-valuation .Critical source areas were areas whose risk of non-point source pollution is high .Management control measures reflecting the characteristics of non-point source pollion in the Liaohe River headwaters area were proposed.The results show that:the high risk areas of agricultural non-point source pollution in the watershed or the critical source areas occupies 21.77%of the total drainage area .The critical source areas compose of farmland and sloping land area mainly concentrate in the northeasted ,middle and southern parts of Liaohe Riv-er head waters .The population density ,the amount of livestock and poultry as well as fertilizer levels in these aress are relatively high .