期刊论文

Study on species diversity of plant communities in karst rocky desertification ecosystem of southwestern Hunan

中文

中南林业科技大学学报

1673-923X

2019

39

1

100-107

10.14067/j.cnki.1673-923x.2019.01.016

国家林业局防治荒漠化管理中心专项项目(20170717) 国家林业局林业科学技术推广项目([2014]52号).

本校为其他机构

以湘西南喀斯特石漠化生态系统环境为研究对象,采用野外样方调查和以空间代替时间的方法,研究了轻度、中度和重度3种不同等级石漠化环境下植物群落的结构特征、物种组成和植物多样性演变规律,旨在为湘西南喀斯特石漠化生态系统的恢复与重建提供理论支撑。结果表明:1)该石漠化地区植物调查记录共39科68属77种,其中灌木植物有28科40属47种,草本植物14科28属30种,3种不同等级石漠化样地中蔷薇科、壳斗科、菊科和禾本科等植物的种类和数量较多;2)在3种不同等级石漠化样地中,灌木层的物种丰富度为中度石漠化>重度石漠化>轻度石漠化,而Shannon-Wiener指数、Simpson指数和Pielou指数均是中度石漠化 >轻...

Krast rocky desertification has been an important ecological issue impeding the economy and society development of southwestern China karst region.It is of great significance to study the plant diversity of the karst rocky desertification ecosystem.Based on these problems,by using field surveys and replacing space with time,the structural characteristics,species composition,and diversity of plant communities under different rocky desertification environments (light rocky desertification,LRD,moderate rocky desertification,MRD),and intense rocky desertification,IRD) were studied.The purpose is t...