生态环境学报Issue(10)：1618-1624,7.DOI:10.16258/j.cnki.1674-5906.2015.10.005
念青唐古拉山东南坡植被群落数量生态分析及群落多样性
Quantitative Ecology and Species Diversity of the Vegetation in Southeast Slope of the Nyenchentanglha Mountain
摘要
Abstract
Study on the response of vegetation to altitude gradient is helpful for us to understand how alpine ecosystems will response to future climate change. We chose to study the vegetation along the south slope of the Nyenchentanglha Mountain, with the altitude gradient from 4 775 m to 5 305 m. Along the altitude gradient, samples were set every 30 meters and species, with plant height, coverage and species frequency investigated in each samples. Double gaps indicator species analysis (TWINSPAN), and Detrended correspondence analysis (DCA) were applied to analysis the community types and species diversity along the altitude gradient of the southeast slope of the Nyenchentanglha Mountain. TWINSPAN divided the plant communication into 5 types:Sabina pingii var. wilsonii+Kobresia pygmaea meadow community, Kobresia pygmaea+Polygonum macrophyllum meadow community, Kobresia pygmaea + Kobresia humilis meadow community, Kobresia pygmaea community and stone beach periglacial vegetation communities. The result of vegetation’s classification by TWINSPAN reflected the relation between community’s location, topography and altitude, which were verified in pattern map of DCA very well. The species was lower in high and low altitude area compared with the middle of slope of mountain, which formed a hump cure. The species diversity index from high to low of community was herb layer >shrub layer > periglacial stone-community. The model of diversity index and altitude was negatively quadratic function.关键词
念青唐古拉山/植被类型/数量生态学/生物多样性/海拔梯度/双向指示种分析法/除趋势对应分析Key words
Nyenchentanglha Mountain/vegetation types/Quantitative ecology/biodiversity/altitude variation/TWINSPAN, DCA分类
农业科技引用本文复制引用
曲广鹏,参木友,赵景学,陈晓鹏,张涛,白彦福..念青唐古拉山东南坡植被群落数量生态分析及群落多样性[J].生态环境学报,2015,(10):1618-1624,7.基金项目
“十二五”国家科技支撑项目；西藏牧区“生产生态生活”保障技术集成与示范 （）
