A method to analyze "source-sink" structure of non-point source pollution based on remote sensing technology
A method to analyze "source-sink" structure of non-point source pollution based on remote sensing technology
复制标题
基于遥感技术的面源污染“源汇”结构分析方法
DOI：
10.1016/j.envpol.2013.07.006
复制
发表时间：
2013-11-01
影响因子：
8.9
通讯作者：
Chen, Qinghui
中科院分区：
文献类型：
--
作者：
Jiang, Mengzhen;Chen, Haiying;Chen, Qinghui
为了给面源污染防治环境规划提供科学依据，提高污染治理效率，根据“源汇”理论，建立了基于区位加权景观对比指数的网格景观对比指数。利用高分辨率遥感影像可以计算出九龙江口面源污染的空间分布。结果表明，2008年九龙江口氮磷“源”面积为534.42 km(2)，“汇”面积为172.06 km(2)。面源污染“源头”主要分布在厦门本岛、海沧大部、角梅以东、港尾、石马河岸； “下沉”分布在厦门岛西南部、石马以西地区。一般来说，随着距海域边界距离的增加，“源”的强度逐渐减弱，“汇”的强度逐渐增强。 (C) 2013 Elsevier Ltd. 保留所有权利。
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 km(2) in 2008, and the "sink" was 172.06 km(2). 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. (C) 2013 Elsevier Ltd. All rights reserved.