摘要
为研究土地利用变化和气象条件变化对云南省昆明市松华坝水源区土壤侵蚀的影响,基于SWAT模型,采用1986～2009年4期土地利用和昆明市1993～2009年气象数据,对变化环境下松华坝水源区牧羊河流域的土壤侵蚀变化情况进行了研究。结果表明,与1986年相比,1995年水源区林地面积增加,耕地面积减少,土壤侵蚀模数减少;2009年,林草面积减幅较大,耕地面积又大幅增加,导致土壤侵蚀模数相对1986,1995年和2000年分别增加了1.82,2.70倍和1.91倍;当降水增加10%时,土壤侵蚀模数变化较大。这一结果可为制定变化环境下松华坝水源地的水保对策提供科学依据。
In order to study the influence of land utilization and meteorological condition changes on soil erosion in water source area of Songhuaba Reservoir in Kunming City, land utilization data in 4 different periods from 1986 to 2009 and meteoro- logical data of Kunming Station from 1993 to 2009 were adopted to study the soil erosion under changing environment in Muyang River located in water source area of Songhuaba Reservoir based on the SWAT model. The result shows that the forest area in- creased, but the agricultural area decreased in 1995 comparing with the situation in 1986. The forest and grassland area de- creased and the agricultural area increased both in large amplitude in 2009, which lead to the increase of soil erosion modulus at 1.82, 2.70 and 1.91 times respectively comparing with the situation in 1986, 1995 and 2000. When the precipitation increased 10% , the soil erosion modulus changes significantly.
出处
《人民长江》
北大核心
2013年第4期77-80,共4页
Yangtze River
基金
水利部公益性行业专项经费项目(201001058
201101042)
关键词
变化环境
土壤侵蚀
水源区
松华坝
changing environment
soil erosion
water source area
Songhuaba
