黄河中游区重力侵蚀研究综述

在对黄河中游区重力侵蚀宏观规律分析、实验观测、计算模型及新技术应用4个方面研究进展进行评述的基础上,就重力侵蚀机理模型构建的难点和重点、3S技术及非线性方法等新技术用于重力侵蚀研究的可行性和应用方式等进行了探讨。分析了重力侵蚀观测水平较低的原因及其对理论和计算模型研究的严重制约作用。提出重力侵蚀研究应在流域观测站点布设、数据自动测报和积累、计算模型合理概化及与其它类型侵蚀研究结合方面进一步开展工作。

Review of gravitational erosion researches in the middle reach of Yellow River

A systematic review of the research on the gravitational erosion in the Loess Plateau is conducted in this paper in respect of the macroscopic rules, the observation, the computational model and the new technical introduction. Some topics are also discussed, such as the difficulties in model construction, the 3S technologies and the nonlinear methods in the area of the gravitational erosion research. Furthermore, the reason of the low level on the field observation is analyzed, which acts as a severe obstacle to theoretical model and calculation. Based on the above results, some proposals for the future research are put forward, including the observation station layout, the construction of the automatic monitoring and data accumulating system, the reasonable model generalization and the combination of other erosion models.