摘要
通过对毛乌素沙漠南缘恢复生态系统不同生境蝗虫群落,进行蝗虫群落结构及其在不同生境条件下存在度的研究,并运用βw多样性指数,Cj相似性指数和Cs相似性指数,对其蝗虫群落多样性进行分析,结果表明不同生境蝗虫群落多样性由高到低为农田杂草地带>油松群落>蓼子柏灌木群落>沙柳群落,反映了环境演替与物种之间的关系,也反映了不同蝗虫适应于不同生境和生态幅度,同时对不同生境间边缘地带的物种丰富度、种群密度的研究发现具有增加的趋势和明显的边缘效应。
The composition of grasshopper communities,its existing degree and grasshopper diversity with the diversity index of whittaker(βw),the resemblance index of Jaccard(Cj) and Sorenson (Cs) as the main index are studied in different habitats of ecosystem restoration of the southern Maowusu desert.The result shows that the diversity order of the grasshopper community (from high to low)is:(1)weeds region along the farmland ＞Pinus tabulaeformis community＞Inula salsoloides community＞Salix cheilophila community;(2)species variety tends to increase along the border area,and edge effect is obvious.It shows that different species adapt to different habitats and the relationship between species and environment evolution.
出处
《延安大学学报（自然科学版）》
2003年第1期71-76,共6页
Journal of Yan'an University：Natural Science Edition
基金
陕西省科技厅"十五"重点项目--陕西省生物多样性规划研究室课题资助。
关键词
毛乌素沙漠
蝗虫群落
多样性
边缘效应
Maowusu desert
grasshopper community
diversity
edge effect
