生态环境学报Issue(1)：58-65,8.
基于群落数量特征的喀斯特湿地森林群落优势种分析
Study on dominant species of karst wetland watershed forest based on the community quantitative characteristics
摘要
Abstract
Caohai wetland is the largest natural freshwater wetlands lake in Guizhou province, which has typical plateau Karst wetland characteristics. It is the main wintering habitat of Grus nigricollis, which is a national level protection birds. Previous studies mainly concentrated on the lake eutrophication, heavy metal contamination of soil, spatial and temporal distribution of phytoplankton and hydrobiontes, ecological restoration and so on. Research on forest ecosystems in Caohai wetland basin catchment area rarely reported. In this study, the typical standard plot survey, community quantitative characteristics and Kikvidze-Ohsawa dominant species determination method were adopted to analyze the dominant species and community quantitative characteristics in different degree of slope. The results show that:(1)The forest community in the Caohai karst wetland watershed is determined by Pinaceae, Fagaceae, Ericaceae, Rosaceae, Caprifoliaceae, Gramineae, Cyperaceae and Asteraceae. (2)Using IV-Kikvidze-Ohsawa the dominant species evaluation method, the proportion of dominant species of forest community decreased and then increased with increasing slope. The inflection points happened in, respectively, slope for forest communities compared with steep slopes for shrubs and herbaceous communities. (3)Using SDR4-Kikvidze-Ohsawa the dominant species evaluation method, the dominant species proportion of forest community showed an increasing trend with increasing slope, but the proportion of dominant species of shrubs and herbaceous communities decreased and then increased with increasing slope, both of the inflection points happened in steep slope. (4)The community information quantity was directly affected the conclusion in the process of analysis the proportion of community dominant species by using Kikvidze-Ohsawa the evaluation method combined with the community quantitative. Therefore, in the process of analyzing proportion of community dominant species, community quantitative indicators which contain more plant population information should be selected.关键词
优势种/喀斯特湿地/森林群落/群落数量特征Key words
community dominant species/karst wetland/forest community/community quantitative characteristics分类
农业科技引用本文复制引用
张建利,吴华,喻理飞,范怡雯,严令斌,袁丛军..基于群落数量特征的喀斯特湿地森林群落优势种分析[J].生态环境学报,2013,(1):58-65,8.基金项目
国家科技支撑计划项目(2011BAC02B02) （2011BAC02B02）
贵州省科学技术基金项目(黔科合J字[2012]2213号) （黔科合J字[2012]2213号）
贵州省国际科技合作计划项目(黔科合外G字[2012]7032) （黔科合外G字[2012]7032）
国家科技支撑计划项目专题(2011BAC02B0202) （2011BAC02B0202）
