摘要
现代空间技术和基于ＧＩＳ的土壤侵蚀定量评价预报技术，使区域水土流失快速调查成为可能。建立水土流失基础数据库，利用遥感技术快速调查和定期更新评价因子，开发空间型土壤流失评价模型系统，在ＧＩＳ环境下进行土壤侵蚀的评价与统计分析，是土壤侵蚀快速调查的基本方法。对土壤侵蚀分类分区系统、土壤侵蚀评价因子选择、区域土壤侵蚀基础数据库建立、中国水土流失评价模型系统等是区域水土流失快速调查中的几个重要问题。
The topic of rapid survey of regional soil erosion has been identified based on the analysis of sciences of soil erosion, spatial information technologies and the demand of soil conservation. The necessary and possibility of the survey have been analyzed focussing on the processes, the spatial characters of regional soil erosion and the theory and techniques of spatial informatics. Some important issues, including the classification and regionalization, the parameterization of the evaluation, the modelling of the erosion and the database building of the evaluation, and so on, have been discussed.
出处
《水土保持通报》
CSCD
北大核心
1999年第3期36-39,共4页
Bulletin of Soil and Water Conservation
基金
中国科学院资源环境重点研究项目
水利部水利科技开发基金
中澳合作项目
关键词
水土流失
水土保持
遥感调查
快速调查
soil erosion
soil conservation
remote sensing survey
rapid survey
