摘要
为探讨邛海流域土壤侵蚀强度的空间分布特征,将流域不同的下垫面区域概化为不同的计算栅格单元,基于ArcGIS和USLE方程,计算了各单元的土壤侵蚀模数和土壤流失量。结果得出:总体上,邛海流域属中度侵蚀;土壤侵蚀等级空间分布上,绝大多数子流域属于中度侵蚀;从土地利用类型看,旱地侵蚀情况最为严重。研究结果可为当地更具针对性和科学性地治理和管理水土流失提供技术支撑。
In order to discuss the spatial distribution features of soil erosion intensity in Qionghai Basin, the different underly- ing surfaces regions were generalized as different calculating grids based on USLE model and ArcGIS formula and the soil erosion intensity and soil loss of each grid were calculated. The results showed that Qionghai Basin was in middle degree erosion as a whole ; from the view of spatial distribution of soil erosion grade, most of the sub - basins were in middle degree erosion ; from the view of land application types, the dry land was eroded most seriously.
出处
《人民长江》
北大核心
2014年第15期93-95,共3页
Yangtze River
