广西植物2018，Vol.38Issue(1)：11-23,13.DOI:10.11931/guihaia.gxzw201703010
西南喀斯特高原盆地石漠化环境植物群落结构与物种多样性时空动态
Temporal?spatial dynamics for plant community structure and species diversity of rocky desertification ecosystem in karst plateau basin, southwest China
摘要
Abstract
Karst rocky desertification has become a very serious eco?environment issue in southwest China,severely hinde?ring the local sustainable development of economy and society. Vegetation restoration is key to the rehabilitation of karst rocky desertification and a series of comprehensive controls for rocky desertification have been carried out in karst areas.But there are very short of the studies on plant community structure and species diversity of karst plateau basin ecosystem in southwest China.And the responses of plant community structure and species diversity to the succession of rocky desertifica?tion are still unclear.All these seriously hinder the control of rocky desertification.In the present study,a typical rocky de?sertification ecosystem of karst plateau basin,Boluo small watershed in Qingzhen City of Guizhou Province,was selected as experiment site.And five sample plots were set up for each degree of karst rocky desertification,namely,nil,potential, slight,and moderate. Then, the plant community structure and species diversity were investigated by ecological survey method from 2013 to 2015.The results showed that the plant community structure of rocky desertification ecosystem was very simple,only 58 plant species including 28 herbaceous species(belonging to 18 families,24 genera)and 30 shrub species (belonging to 17 families,25 genera)were recorded,and 82.36% of them belong to monotypic genus. There are obvious differences of plant community structure between different degrees of rocky desertification,and the plant population density among different degrees of rocky desertification also varies obviously, with the order of slight > moderate > potential >nil.The indices of plant diversity,evenness,richness and dominance all are low,and each of them has no coupling rela?tionship with the rocky desertification.Along with the increase of the years,the plant community height,ground diameter, population density,and shrub biomass show an increasing trend,but there are not significant differences between adjacent years.The human disturbances on the ecosystem in study area getting weaker,the importance of dominant species tends to decrease,and the vegetation shows a trend of positive succession. The results have important values for the restoration of rocky desertification in karst plateau basin,southwest China.关键词
喀斯特高原盆地/石漠化/植物多样性/演替Key words
karst plateau basin/rocky desertification/plant diversity/succession分类
农业科技引用本文复制引用
温培才,盛茂银,王霖娇,汪攀..西南喀斯特高原盆地石漠化环境植物群落结构与物种多样性时空动态[J].广西植物,2018,38(1):11-23,13.基金项目
国家自然科学基金(31660136) （31660136）
贵州省水利厅科技项目(KT201409) （KT201409）
贵州省社会发展攻关计划课题(黔科合 SZ [2014]3036号) （黔科合 SZ [2014]3036号）
贵州省科学技术基金重点项目(黔科合基础[2016]1414) （黔科合基础[2016]1414）
贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2016]064)[Supported by National Natural Science Foundation of China(31660136) （黔教合KY字[2016]064）
R&D Fund of Guizhou Provin?cial Water Resources Department(KT201409) （KT201409）
Guizhou R&D Program for Social Development([2014]3036) （[2014]3036）
Key Program of Guizhou Science and Technology Fund([2016]1414) （[2016]1414）
Support Plan for Science and Technology Top?notch Talents of Guizhou Higher Education Institutions([2016]064)]. （[2016]064）
