【摘要】 应用层次分析方法,以青藏高原典型地区玛多县为例,探讨高原生态环境的结构和功能、景观的动态变化以及相互作用机理,分析结构的异质性、丰富度、破碎度等,建立了基于层次分析的青海高原生态环境质量评价指标体系和方法,并对玛多县的区域生态环境质量进行了评价。结果表明:玛多县2004年生态环境质量状况处于一般偏差水平,基本上反映出了玛多县的生态环境现状。格局优化度(0.4228)、变化良性度(0.4180)处于一般水平,功能强弱度(0.2764)最小,属于较差状态,人为胁迫度(0.7037)最大,处于良好状态,说明外界人为干扰较少。当地的生态环境偏差的状态主要是由于当地的自然环境条件恶劣造成的。更多还原

【Abstract】 By means of the hierarchical analysis method,taking Maduo County(a typical area of the Qinghai-Tibet Plateau) as an example,the structure and functions of the plateau ecological environment,the dynamic changes and interactive mechanisms of the geographic landscapes,and the heterogeneity,abundance,and fragmentation of the landscape structure are explored.An assessing index system and an assessing method of ecological environment quality for the Qinghai-Tibet Plateau are established,and an assessment is conducted on the ecological environment in Maduo County.The results show that the ecological environment quality of Maduo County is at a worse level in 2004,which reflects basically the ecological environment situation in Maduo County.The ecological pattern optimization(0.4228) and prosperous variation(0.4180) are at a normal level;the function intensity(0.2764,the smallest among four assessing indexes) is at a worse level,but anthropogenic stress(0.7037,the greatest) is in a good condition,which shows that the ecological environment is hardly disturbed by human being.The deterioration of the ecological environment this region is attributed mainly to its natural environment conditions.更多还原