国外土壤侵蚀模型发展概述

 土壤侵蚀模型是预报水土流失、指导水土保持措施配置、优化水土资源利用的有效工具。根据土壤侵蚀模型发展过程的特征,从时间上划分了土壤侵蚀模型发展的3个阶段,即通用土壤流失方程(USLE)建立以前的时期、USLE的建立及发展的时期和土壤侵蚀模型百家争鸣时期。介绍了世界上一些基本的土壤侵蚀模型,从而概述国外土壤侵蚀模型的发展过程。

Development of Soil Erosion Models Abroad

Soil erosion models can be adopted to predict soil erosion and water loss, guide the allocation of soil and water conservation measures and optimize to effectively use of water and land resources. According to time factor, the development of soil erosion models is divided into three periods on the basis of the characteristics of models. That is period before establishment of USLE, period of establishment and development on ULSE and contention of a hundred schools of thoughts about soil erosion models. Based on the three periods, some basic soil erosion models in the world are described, and the development process of models abroad are given a brief account.