%0 Journal Article
%T Risk evaluation of agricultural soil phosphorus release to the water bodies<br>农田土壤中的磷向水体释放的风险评价
%A GAO Chao
%A ZHANG Taolin
%A WU Weidong
%A <br>高超
%A 张桃林
%A 吴蔚东
%J 环境科学学报
%D 2001
%I 
%X The risks of agricultural soil phosphorus loss to surface waters in Taihu lake watershed were evaluated by comparing the P sorption capacity with available P level in different kinds of soils. The results showed that phosphorus sorption index (SI) is a simple yet adequate paramenter to estimate P sorption capacity,which can be used to characterize the potential of a given soil for P release to runoff as a result of P amendments. In the studied area the SI value 30 is a critical point.Above the value soils have a considerable buffering capacity to the addition of P, but soils with SI value less than 30 are very sensitive to P amendments. So it is pointed that great risk of P loss may happen if excessive amount of P fertilizer is applied to these soils.
%K Tahu lake watershed
%K nonpoint source pollution
%K soil phosphorus
%K sorption index
%K risk evaluation<br>太湖流域
%K 非点源污染
%K 农田土壤磷素
%K 吸持指数
%K 风险评价
%K 水体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=412BB5BD0C5CEAB0&yid=14E7EF987E4155E6&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=A04F01817ECB9A48&eid=375BEEEA164CFE59&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=61&reference_num=16