摘要
土壤风蚀是导致干旱半干旱地区土地退化和区域环境恶化的最重要的原因之一。本文从区域土壤风蚀评价与监测需要出发 ,提出了一套土壤风蚀评价的指标体系和制图方法 ,其特点是 :(1 )充分利用 3 S技术 ;(2 )把耕地、沙丘地同其它土地类型区分开来 ,使用不同的指标体系 ;(3 )分别提取每一图斑的各指标因子 ,并建立相应的数据库 ;(4)强调限制性因子。
Soil erosion is one of the most important reasons responsible for land degradation and environment deterioration in arid and semiarid areas. The paper, to meet the needs of regional soil erosion monitoring, elaborates a series of index system and mapping methods, which are characterized by;(1)employing Remote Sensing, Geographical Information System and Global Positioning System; (2)selecting different indexes for farmland, sand land and other lands; (3)The GIS database can provide full and detailed data of each index factor for every patch of the map; (4)restrictive factors are stressed.
出处
《干旱区资源与环境》
CSSCI
CSCD
2000年第2期48-52,共5页
Journal of Arid Land Resources and Environment
