CAJ | 학술논문

　　以宜兴梅林小流域为研究对象，采用数理统计和系统分析的方法，对典型降雨事件中不同种土地利用类型的磷素流失特征进行分析。结果表明，非点源污染物的流失总量和污染物的质量浓度依赖于降雨过程的产流特征和复杂的下垫面要素特征；不同土地利用类型上的磷素流失随降雨程度的不同而不同，旱地地区表面的磷素最容易随降雨流失，而植被较密林地的磷素流失缓慢；林地等植被覆盖较好下垫面的磷素主要以PO4－P的形态随降雨径流输出；土地的施肥程度、有机腐殖质等对磷素流失的影响不同，地表的扰动程度也直接决定磷素流失的特征。建议根据土地利用类型，通过工程和非工程措施对不同降雨阶段的磷流失特征进行调控，以减少太湖流域的非点源磷素污染。
　　이의흥매림소류역위연구대상，채용수리통계화계통분석적방법，대전형강우사건중불동충토지이용류형적린소류실특정진행분석。결과표명，비점원오염물적류실총량화오염물적질량농도의뢰우강우과정적산류특정화복잡적하점면요소특정；불동토지이용류형상적린소류실수강우정도적불동이불동，한지지구표면적린소최용역수강우류실，이식피교밀임지적린소류실완만；임지등식피복개교호하점면적린소주요이PO4－P적형태수강우경류수출；토지적시비정도、유궤부식질등대린소류실적영향불동，지표적우동정도야직접결정린소류실적특정。건의근거토지이용류형，통과공정화비공정조시대불동강우계단적린류실특정진행조공，이감소태호류역적비점원린소오염。
The characteristics of phosphorus losses during typical rainfall events in different land covers in the Meilin watershed, a small watershed located in Yixing City, were analyzed using mathematical statistics and systematical analysis methods.The results show that the total mass and concentration of non-point source pollutants depend on runoff characteristics and complex landscape characteristics .Phosphorus losses from different types of land are various at different rainfall levels , the surface phosphorus in dry-land areas is lost more easily than in woodlands, and the surface phosphorus in woodlands emigrates in the form of PO 4-P in runoff.Fertilization and organic humus loss have different effects on phosphorus loss , and disturbance on the land surface determines the characteristics of phosphorus loss .It is suggested that engineering and non-engineering measures should be taken to control phosphorus loss from different types of land in different rainfall stages , in order to control the non-point source phosphorus pollution in the Taihu Basin .