基于GIS分析土壤侵蚀过程中氮磷流失分布——以定西市安定区为例  

Analysis of Nitrogen and Phosphorus Losses in Soil Erosion Process Based on GIS——Taking Dingxi City Anding District as An Example

作　　者：陶鸿斌 汪文飞 Tao Hongbin;Wang Wenfei(Lanzhou Jiaotong University,Lanzhou,Gansu,730070,China)

机构地区：[1]兰州交通大学,甘肃兰州730070

出　　处：《绿色科技》2018年第24期15-17,19,共4页Journal of Green Science and Technology

基　　金：兰州交通大学青年基金(编号:2017008)

摘　　要：为了分析定西市安定区土壤侵蚀过程中氮磷流失量,基于通用土壤侵蚀公式(USLE)确定了定西市安定区的土壤侵蚀分布;利用土壤养分测定仪测定各土地利用类型的氮磷数据;结合两者对安定区的影响分析了土壤侵蚀过程中氮磷流失的分布图。通过氮磷流失分布图与各土壤侵蚀因子的比较得出:坡度与坡长是土壤侵蚀过程氮磷流失主要的影响因子。对土壤侵蚀面源氮磷流失提出了相应的防治措施。In order to quantitatively analyze the loss of nitrogen and phosphorus during the process of soil erosion in Anding District of Dingxi City,this study investigated the distribution of soil erosion in the Anding District of Dingxi City based on the Universal Soil Erosion Formula (USLE),and measured the nitrogen and phosphorus data of various land-use types using a soil nutrient analyzer. The combination of the two analyses the distribution of nitrogen and phosphorus loss during soil erosion in the Anding District. Through the comparison of nitrogen and phosphorus loss distribution map with each of the soil erosion factors,it is concluded that slope and slope length are the main influencing factors of nitrogen and phosphorus loss during soil erosion process. Based on the analysis of the distribution map of nitrogen and phosphorus loss in soil erosion,the corresponding control measures for the loss of nitrogen and phosphorus from surface sources of soil erosion were proposed.

关 键 词：GIS 土壤侵蚀 氮磷流失 USLE 

分 类 号：X143[环境科学与工程—环境科学]