基于生态脆弱性的淮河流域水土保持策略研究

水土流失是淮河流域生态环境可持续发展的制约因素之一。分析了淮河流域生态脆弱性的影响因素,认为流域两侧地形和水系严重不对称的基底性脆弱,南北气候过渡带的交错性脆弱,暴雨降水及径流的波动性脆弱,植被覆盖、土壤和土地利用变化的动态性脆弱和黄河夺淮导致的历史遗传性脆弱是淮河流域水土流失的主要成因。针对淮河流域脆弱性成因,提出了该区水土保持的主要策略。

Countermeasures for Soil and Water Conservation in the Huaihe River Basin Based on Ecological Vulnerability

Soil erosion is an important factor that limits sustainable development in the Huaihe River basin.This paper analyzes the main influential factors that make ecology in the basin more vulnerable.Anisomeric topography and water system make the basin become basically vulnerable,while transitional geographical location makes the basin to be interactively vulnerable.Fluctuated precipitation and runoff also cause the Huaihe River to be vulnerable,and dynamical vegetation cover and the change in landuse are other factors that make the basin to be vulnerable.Historically,the Yellow River invaded the Huaihe River,which plays a significant role in soil erosion of the Huaihe River basin.Finally,the sustainable developing countermeasures to conserve soil and water are also presented for the Huaihe River basin.