黄土高原地区土地植被承载力与植被生态恢复建设  

Vegetation Carrying Capacity of Land and Vegetation Restoration and Construction in the Loess Plateau Region

作　　者：曹军胜[1,2] 朱清科[1] 薛智德[3] 

机构地区：[1]水土保持与荒漠化教育部重点实验室,北京林业大学水土保持学院,北京100083 [2]延安大学生命科学院,陕西延安716000 [3]西北农林科技大学资源与环境学院,陕西杨陵712100

出　　处：《西北林学院学报》2008年第1期39-43,共5页Journal of Northwest Forestry University

基　　金：国家“十一五”科技支撑项目“困难立地工程造林关键技术研究与示范(2006BAB03B03)

摘　　要：土地植被承载力是黄土高原地区土壤水分与植物生长关系调控、合理利用水土资源和生态植被建设的核心问题之一。分析了土地植被承载力对植被结构的影响,认为在大气降雨量为唯一土壤水分输入量的黄土高原,土地植被承载力决定了植物群落密度,直接影响植被结构。从植被地带和群落适应性原理、缓解土壤干旱、控制植被生产力三个方面探讨了生态恢复与土地植被承载力的相互关系,并提出了黄土高原生态恢复建设必须优先考虑土地植被承载力,根据土地植被承载力进行植被生态恢复建设是黄土高原生态环境得以改善和持续发展的必由之路。Vegetation carrying capacity of land （VCCL） is a key index for rational utilization of soil water and vegetation resource in the Loess Plateau region. Based on the analysis on the relationship between the VCCL and the vegetation structure, it was thought that the density of the vegetation community was decided by VCCL, and the vegetation structure in this region was mostly affected by VCCL. The relationship including the between VCCL and vegetation restoration and conctruction was analyzed from three aspects principle of vegetation zone and community ; the limit of soil arid layer and the production control of a vegetation community. It was put forward that VCCL should be firstly considered in vegetation restoration and construction in the Loess Plateau. VCCL based on vegetation restoration and construction is the only way to maintain ecological environment and sustainable development in Loess Plateau region.

关 键 词：土地植被承载力 植被结构 植被生态恢复 黄土高原 

分 类 号：S718.5[农业科学—林学]