唐山市山地丘陵区水土保持林的水文效应分析

Analysis for Hydrological Effects of Water and Soil Conservation Forests in the Hilly Regions of Tangshan

水土保持林以保持水土和改善生态环境为主要目的，是构成山丘区域生态系统的主体，通过其自身特征可以改变地表覆被和土壤特性，从而影响流域的水文循环要素。通过分析唐山市山地丘陵区水土保持林对降水再分配、径流和流域水沙变化的影响，阐述水土保持林在调节径流、防治洪水，改善局部地区水文循环、流域产沙过程的作用机理和产生的水文作用，目的为山地丘陵地区水土保持林在改善区域小气候条件和改良土壤水文性质等方面的研究提供理论参考依据。

The water and soil conservation forests is to conserve soil and water and improve the ecological environment, and is the main body of e- cosystem of the mountainous and hilly region. Its own characteristics can change surface cover and soil features to affect elements of the hydro- logical cycle of the valley. By the analysis of soil and water conservation forests impact on redistribution of rainfall, runoff and sediment changes impacts in Tangshan mountainous and hilly region, the essay elaborates the function of soil and water conservation forests in regulating runoff, controlling flood, and improving the local regional hydrological cycle, the mechanism of the process of watershed sediment yield and hydrological role, in order to provide a theoretical reference for soil and water conservation forests in mountainous and hilly areas to improve regional climate conditions and soil hydrological properties.