黄土高原水土保持措施对侵蚀土壤发育的效应

 水土保持工程及植被措施实施,对土壤形成条件、土壤特征及土壤发育产生一定影响,而侵蚀土壤发育程度是评价土壤质量变化及其生态环境效应的重要基础。研究黄土高原水土保持措施对侵蚀土壤理化性质、发育和功能的影响,可为水土保持综合治理,改善黄土高原生态环境提供依据。评述长期定位试验的方法及以空间代替时间的原理,研究了在实施不同水土保持措施后,土壤基本理化性状的变化特征。结果表明:随着措施实施年限的增加,土壤的水分环境和土壤有机碳含量发生了明显改善,对土壤结构和功能产生了影响。证明水土保持措施对侵蚀土壤的发育有一定促进作用。

Effects of soil and water conservation measures on eroded soil development in the Loess Plateau

The condition of soil formation, soil characters and soil development were influenced directly by the measures of soil and water conservation. The development degree of eroded soil is an important base to estimate the changing of soil quality and the effects to environment. To study the development effect of eroded soil is able to offer a gist to improve the environment of the Loess Plateau. This paper analysed the changing of soil physical and chemical properties under measures of soil and water conservation, bosed on the method of a sitespecific experiment and the concept of space as a substitute for time. The result showed that the soil water environment and the content of soil organic carbon were increased ; then, the soil structure and its functions were improved greatly with the adding of years of measures implemented. It was testified that the measures of soil and water conservation had positive activity for eroded soil development. And it was pointed out that study aspects to be strengthened about the effect of soil and water conservation measures on eroded soil development in the Loess Plateau.