And among all sorts of nonpoint source pollutions, agricultural nonpoint source pollution is the biggest one.
而在各种非点源污染中，有很大一部分来源于农业非点源。
Phosphorus loss from agricultural land accelerates eutrophication of lakes and streams, and is an important component of nonpoint-source pollution.
大部分水体富营养化的限制因素是P，土壤P的流失是重要的非点源污染。
Other nonpoint source pollution comes from agricultural runoff, construction sites, and other land disturbances, as discussed in Chap. 11.
其它非点源污染来自匀在第十一章讨论过的农业上的排水，建筑工地和其它土地施工。
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