黄土高原林草水土保持有效盖度分析

Soil and water conservation effective coverage analysis of forest and grass on the loess plateau

林草有效盖度的提升对水土保持有重要的作用,而影响林草有效盖度的因素较多,如降雨、坡度等,笔者在本文将以黄土高原为例对林草水土保持有效盖度进行分析。文章首先概述了水土保持及植被有效盖度,阐明了水土保持、有效盖度的含义以及影响有效盖度的因素;其次对研究区域以及研究方法进行了论述;再次对研究数据进行了整理,并对坡耕地侵蚀性降雨指标与林、草地水土保持有效盖度进行了详细分析;最后提出了提升黄土高原林草水土保持有效盖度的措施,即依据坡度不同调整植被以及开发合理的工程措施。

The improvement of the effective cover of forest and grass plays an important role in water and soil conservation, and there are many factors affecting the effective coverage of forest and grass, such as rainfall and slope, etc. In this paper, the author takes the Loess Plateau as an example, Coverage for analysis. The article frst outlines the soil and water conservation and the effective coverage of vegetation, clarifes the meaning of soil and water conservation, effective coverage and the factors that affect the effective coverage. Secondly, it discusses the research area and research methods; Erosion index of sloping arable land and effective coverage of soil and water conservation of forest and grassland are analyzed in detail. At last, the measures to enhance the effective coverage of soil and water conservation of forest and grassland in Loess Plateau are put forward, that is, the vegetation is adjusted according to the slope and the reasonable engineering measures are developed.