水资源保护2012，Vol.28Issue(2)：42-45,4.DOI:10.3969/j.issn.1004-6933.2012.02.010
深圳坪山河流域土地利用变化对流域非点源污染负荷的影响
Impacts of land-use change on non-point source pollution load in Pingshan River Watershed in Shenzhen City
李杨 1马晓明2
作者信息
- 1. 北京大学深圳研究生院环境与能源学院,广东深圳518055
- 2. 北京大学环境科学与工程学院,北京100871
- 折叠
摘要
Abstract
The structural changes of land use in the Pingshan River Watershed in Shenzhen City in 1990 and 2000 were analyzed using GIS spatial analysis technology. Based on the soil survey map and precipitation data, the L-THIA model was used to estimate the non-point source pollution load with TN and TP being the estimation indices. The results show that, from 1990 to 2000, the area of farmland and garden plots decreased from 7.8% and 12.4% to 3.2% and 8.7% , respectively, and the construction area and water area increased from 1.8% and 1.9% to 7.5% and 2.4%, respectively, indicating a trend of transformation from farmland and garden plots into construction land. In addition, the areas sensitive to non-point source pollution were expanding. The average runoff volume increased by 9.6%, and the loads of TN and TP increased from 483.2 t and 29.2 t in 1990 to 498.4 t and 36.3 t in 2000, respectively.关键词
土地利用变化/非点源污染/L-THIA模型/深圳市/坪山河流域Key words
land-use change/ non-point source pollution/ L-THIA model/ Shenzhen City/ Pingshan River Watershed分类
资源环境引用本文复制引用
李杨,马晓明..深圳坪山河流域土地利用变化对流域非点源污染负荷的影响[J].水资源保护,2012,28(2):42-45,4.
