摘要
本文综合引用水土保持林草植被的有关资料，对植被结构的研究意义及其与土壤侵蚀的关系进行了分析。现有资料表明：黄土区林草植被保持水土的临界盖度约为４０％－６０％，风蚀区植物固沙的临界盖度约为２０％－５０％；黄土区流域控制土壤侵蚀效果最佳的林草覆被率约为４８％。本文最后还对有关问题进行了讨论。
By comprehensively citing information about vegetations for soil and water conservation,and analyzing on the significance of studing vegetation structures and relationship between them and soil erosion,the results showed the critical cover-degree of vegetation is about 40%-60% for soil and water conservation in the loess Plateau,about 20%-50% for sand fixation in the wind-erosive areas.The optimum cover-degree of vegetation for controlling soil and water loss is about 48%.Also questions related to vegetation and soil erosion were discussed in this paper.
出处
《干旱区资源与环境》
CSCD
1999年第2期62-68,共7页
Journal of Arid Land Resources and Environment
基金
国家"九五"科技攻关项目
关键词
黄土高原
植被结构
盖度
土壤侵蚀
Loess Plateau,vegetation structure,cover-degree,soil erosion.
