摘要
用DCA排序研究了黄土丘陵区撂荒地上植物群落演替的趋势和方向 ,用 6种多样性指数分析了物种丰富度、均匀度和综合多样性在演替过程中的变化。随着演替的进展 ,物种丰富性显著增高 ,均匀性逐渐降低 ,综合多样性逐渐升高。
The Detrended Correspondence Analysis (DCA) was employed to analyze the trend and direction of plant community succession of abandoned loess land. Seven species diversity indices were used to study the changes in species richness, species evenness and diversity in the succession. With the development of succession, species richness increased significantly, species evenness decreased slightly and diversity went up.
出处
《生物多样性》
CAS
CSCD
2000年第4期378-384,共7页
Biodiversity Science
基金
国家科技攻关项目!( 96-0 0 4 -0 5-0 3)
山西省自然科学基金!( 991 1 0 0 )资助
关键词
演替分析
物种多样性
黄土高原生态恢复
succession analysis, species diversity, ecological restoration of loess plateau, convert farmland to fored
