黄河中游侵蚀产沙环境要素临界与交互作用研究进展  

Research Progress of Interactive Influence and Thresholds of Geographic Environmental Elements on Sediment Yield of Drainage Basins in the Middle Reaches of the Yellow River Basin

作　　者：陈浩[1] 蔡强国[1] 周金星[2] 胡文生[1] 梁广林[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]中国林业科学研究院林业研究所,北京100091

出　　处：《水土保持研究》2004年第4期54-59,共6页Research of Soil and Water Conservation

基　　金：香港特区政府研究资助局支持项目(HKU7017/01E);国家基金委;黄河水利委员会重点基金项目(50239080)

摘　　要：目前黄河中游产沙的峰值区(多沙粗沙区)的范围已明确界定。但是,产沙峰值区的形成与地理环境要素(自然、人类活动)变化的响应机制是什么,影响产沙峰值区环境要素的综合作用和主导环境因素又是什么,还有待于深入研究。在前人研究的基础上,论述了黄河中游的环境因子和人类活动对流域侵蚀产沙影响研究的最新进展,根据研究中存在的问题及结合黄土高原正在开展的退耕还林的生物工程建设,指出加强流域产沙与环境要素临界特征与交互作用研究的重要性,揭示自然、人类活动在流域产沙的综合影响与交互作用,探讨在人类活动影响下植被的恢复前景与综合治理的减沙效益,是近期需要开展的主要研究方向。At present,the range of peak area (especially in the coarse and overburden sediment area) about runoff and sediment in the middle reaches of the Yellow River has been definitely ascertained.However,the response mechanism between the forming of the peak area and the changes of the geographical environmental factors is unknown.And the environmental factor,which has the most important effect on the peak area,needs further study.Based on the existing study,this project discusses the new research progress about the comprehensive effect,which environmental factors and human activities have on the erosion and sediment yield in the middle reaches of the Yellow River.Considering the existing problems and the key project of returning farmland into forest at present,the main research aspects at present in soil erosion field go as follows:(1) the importance of study on the critical characteristic and the interaction between sediment yield and environmental factors;(2) the integration and interaction between physical geographic environment and human activities;(3) the benefits of vegetation restoration and comprehensive control in reduction of sediment.

关 键 词：交互作用 环境要素临界 植被恢复 黄河中游 

分 类 号：S157[农业科学—土壤学]