Application of GIS in the Control of Nonpoint - Source ( NPS ) Pollution.

地理信息系统(GIS ) 在非 点源 污染控制中的应用.

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The nonpoint source pollution of surface water environment is receiving more and more attention all societies.

地表水环境的非点源污染已越来越受到人们的重视.

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Nonpoint source pollution comes primarily from runoff from cropland, urban areas, and construction and mining sites.

非点污让则主要来自于农地 、 城区的倾倒, 建设用地和采矿用地的排污.

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Land use types have great influences on nonpoint source ( NPS ) pollution load in watershed.

流域土地利用与非点源污染之间的关系非常密切.

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