摘要
在遥感图像基础上,利用GIS技术从景观指数方面定量分析了四川墨尔多山自然保护区植被景观的斑块特征.结果表明:该保护区存在9种植被类型,斑块数为1 610,斑块面积约56 990 hm2.其中,针叶落叶阔叶混交林是整个区域的基质,与亚高山针叶林、流石滩稀疏植被、干旱河谷灌丛构成该保护区的4个主要的植被景观要素,其它植被类型镶嵌其间.亚高山、高山草甸的分布面积最小,斑块数最少,边界最为简单,景观地位最弱.与其它研究区域相比,该保护区的植被景观类型丰富、多样性较高、受人类活动影响小,整个自然生态环境保护较好.
Based on remote sensing images, patch characteristics of vegetation landscape in the Moerduo Mountain Nature Reserve have been analyz by using GIS technology and landscape indices. The results show that： There are 9 vegetation types in this reserve with 1 610 patches and 56990 hm^2 of area. Mixed coniferous and deciduous broad-leaved forest is the background of the area because of its biggest distribution area, inlaid with other vegetation patches, and together with the sub-alpine coniferous forest , screes sparse vegetation , shrub of dry valley makes up,the four dominating vegetation landscape elements in the reserve, and other vegetation patches are surrounded by it.Sub-alpine and alpine meadows are of the lowest heterogeneity degree for its smallest area, lowest patch number and less disintegration. Compared with other reserves, high species richness, dominance and diversity, typical dominant vegetation are found to be the main features of the vegetation landscape in this reserve. Because the impact of human activity in that area is low , the ecological environment is well protected.
出处
《西华师范大学学报（自然科学版）》
2008年第3期243-248,共6页
Journal of China West Normal University(Natural Sciences)
基金
四川省教育厅青年基金项目(2002B18)
四川省重点学科建设项目(SZD0420)
关键词
植被景观
斑块
景观指数
墨尔多山自然保护区
vegetation landscape
patch
landscape index
Moerduo Mountain Nature Reserve
