%0 Journal Article
%T GIS and L-THIA Based Analysis on Variations of Non-point Pollution in the Guanlan River Watershed, Shenzhen<br>基于GIS和L-THIA模型的深圳市观澜河流域非点源污染负荷变化分析
%A BAI Feng-jiao
%A LI Tian-hong
%A <br>白凤姣
%A 李天宏
%J 环境科学
%D 2012
%I 
%X In order to reveal the influence of land use change on the non-point source pollution load during the rapid urbanization process in the Guanlan River watershed, Shenzhen, Guangdong, with the support of GIS, L-THIA model was used to analyze the changes in spatial distribution of non-point source pollution load in the river watershed from 1996 to 2008.The parameters in L-THIA model were revised according to the environmental conditions of the study region. The results showed that during the urbanization from 1996 to 2008, the load of major pollutants, namely TN, TP and COD, showed an obviously increasing trend with increase rates being 62.78%, 59.73% and 55.40%, respectively, and the distribution of areas with high pollution load was expanding along the river and the main roads, and then connected into large areas. The total load of SS was decreased by 7.59%. This was caused by the reduction of land for development, which was the land use pattern with high SS output. Therefore, in order to control the non-point pollution effectively, the Guanlan River watershed could be divided into four pollution control areas according to the distribution of pollution load and different land use patterns. The results of this research would provide scientific references for non-point source pollution control in the Guanlan River watershed.
%K land use change
%K non-point source pollution
%K the Guanlan River watershed
%K L-THIA model
%K GIS<br>土地利用变化
%K 非点源污染
%K 观澜河流域
%K L-THIA模型
%K GIS
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=669A8D56CCC2B6A1F64D2C82B09BF2B9&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=5D311CA918CA9A03&sid=30D12647FBC8A758&eid=F575EA6B7F46096C&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=31