内蒙古典型草原生态系统健康评价  

Assessment of typical steppe ecosystem health in Inner Mongolia

作　　者：王立新[1] 刘钟龄[1] 刘华民[1] 王炜[1] 梁存柱[1] 乔江[1] 中越信和[2] 

机构地区：[1]内蒙古大学生命科学学院,呼和浩特010021 [2]广岛大学国际协力研究科,日本东广岛市739-8529

出　　处：《生态学报》2008年第2期544-550,共7页Acta Ecologica Sinica

基　　金：国家自然科学基金重大研究计划资助项目(90102011);国家重点研究计划资助项目(30330120);国家和地区联合资助项目(30360016);内蒙古自然基金重点资助项目(2007110206037)~~

摘　　要：以草原生态系统中的植物-土壤-大气界面的关键生态过程为基础,结合典型草原生态系统的群落特征及其退化演替模式,并考虑水分因子的限制作用,在确定生态系统健康评价模式(参照)系统和基况评价指标的同时,建立了典型草原生态系统健康评价的CVOR综合指数的计算模型和方法。通过分析放牧压力和围封保育对内蒙古典型草原生态系统健康的影响,检验了CVOR综合指数的可行性,可为草原生态系统健康管理提供一个综合、简单、准确、宜行的评价方法。In this paper, we used Leymus chinensis steppe in 1981 as a reference ecosystem and established an index for assessing environmental conditions of steppe. Then, based on the key ecological process of plant- soil- atmosphere interface, the synthetical CVOR model is established to assess ecosystem health of typical steppe, with regarding of community characteristics, degradation succession and also the restriction function of the precipitation in the typical steppe ecosystem. The feasibility of CVOR model was tested by analyzing the influence of grazing pressure and fencing protection on the health of typical steppe ecosystem in Inner Mongolia. The CVOR model could be used as a synthetic, simple, accurate and suitable method for grassland ecosystem health assessment and management.

关 键 词：典型草原 生态系统健康 模型 放牧 

分 类 号：S812[农业科学—草业科学]