A method to analyze ”source-sink” structure of non-point source pollution based on remote sensing technology
With the purpose of providing scientific basis for environmental planning about non-point source pollution prevention and control,and improving the pollution regulating efficiency,this paper established the Grid Landscape Contrast Index based on Location-weighted Landscape Contrast Index according to the ”source-sink” theory.The spatial distribution of non-point source pollution caused by Jiulongjiang Estuary could be worked out by utilizing high resolution remote sensing images.The results showed that,the area of ”source” of nitrogen and phosphorus in Jiulongjiang Estuary was 534.42 km2 in 2008,and the ”sink” was 172.06 km2.The ”source” of non-point source pollution was distributed mainly over Xiamen island,most of Haicang,east of Jiaomei and river bank of Gangwei and Shima; and the ”sink” was distributed over southwest of Xiamen island and west of Shima.Generally speaking,the intensity of ”source” gets weaker along with the distance from the seas boundary increase,while ”sink” gets stronger.
Remote sensing ”source-sink” structure Grid Landscape Contrast Index
Mengzhen Jiang Haiying Chen Qinghui Chen
Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China
国内会议
福建省海洋学会2014年学术年会暨福建省科协第十四届学术年会分会场
福建平潭
英文
9-20
2014-09-01（万方平台首次上网日期，不代表论文的发表时间）