摘要
在科尔沁榆树疏林草原分布典型区域的北部,设置固定样地,采用记名计数样方法,逐月调查,研究其草本层的物种组成和多样性.结果表明,科尔沁榆树疏林草原草本层种类组成中禾本科植物为第一大科,其次是豆科、藜科和菊科,猪毛蒿大量分布,草地出现了普遍退化;草本层的Margalef丰富度指数范围在1.37~2.16、Shannon-wiener多样性指数和Simpson多样性指数范围在0.49~1.41,Pielou均匀度指数范围在0.39~0.49,4种指数具有相似的季节动态规律,9月最高,10月迅速下降.
In this study,fixed sample plots were set up in the northern part of typical distribution area of Horchin elm sparse forest grassland.Using the registered counting method,the species composition and diversity of the herbaceous layer were studied by monthly investigation.The results showed that Poaceae was the largest family,followed by Leguminosae,Chenopodiaceae and Asteraceae in the composition of grassland herbaceous layer in Horchin elm sparse forest and Artemisia scoparia was widely distributed in the area and grassland degradation oc⁃curred generally.The Margalef richness index of the herbaceous layer was in the range of 1.37~2.16,and the Shannon-wiener and the Simpson diversity index were in the range of 0.49~1.41,and the Pielou evenness index was in the range of 0.39~0.49.The four indexes have similar seasonal dynamics,with the highest in September but a rapid decline in October.
作者
商博
张淑艳
王亚娟
杨若琪
周佳铭
SHANG Bo;ZHANG Shu-yan;WANG Ya-juan;YANG Ruo-qi;ZHOU Jia-ming(College of Agriculture,Inner Mongolia University for Nationalities,Tongliao 028043,China)
出处
《内蒙古民族大学学报（自然科学版）》
2021年第3期237-242,共6页
Journal of Inner Mongolia Minzu University：Natural Sciences
基金
内蒙古自治区自然科学基金项目(2019MS(LH)03016)。
关键词
科尔沁
疏林草原
生物多样性
Horchin
Sparse forest grassland
Biodiversity
