摘要
依据近期对美国水土保持新技术考察,介绍了美国水土流失预测预报和动态监测最新进展。美国目前正在研究和应用的水土流失预测预报模型主要包括,一类是以通用土壤流失方程式修订版(RUSLE)为代表的基于经验和统计的回归模型;一类是以水力侵蚀预报项目研究成果(WEPP)为代表的着重过程研究的模型。前者主要用于估算一定区域的土壤侵蚀量,后者用于研究土壤侵蚀随时间和空间变化的规律。模型所需水土流失动态数据的采集、传输、分析、处理以及发布主要依靠由高新技术支持的全国数据网络系统。
A brief introduction of current progress on soil and water loss prediction and moni-toring in USA is presented based on the investigation early this year. There are 2 main types ofsoil and water loss prediction model to be used in USA. One such as RUSLE,is based on exper-imental and statistical data and used for evaluation of amount of soil loss from a region, Anoth-er one is represented by WEPP(Water Erosion Prediction Project), which is used to deal withthe process of soil erosion by water. Soil and water loss data collection, transmission, process-ing, analyzing and releasing are supported by the national data- net work of high -tech.
出处
《水土保持研究》
CSCD
1998年第2期119-123,共5页
Research of Soil and Water Conservation
关键词
水土保持
预测预报
动态监测
模型
soil and water conservation prediction monitoring model