生物多样性 ›› 1997, Vol. 05 ›› Issue (3): 168-172.DOI: 10.17520/biods.1997027

• 论文 • 上一篇    下一篇

草地植物群落物种多样性取样强度的研究

杨利民,韩梅,李建东   

  1. (吉林农业大学野生植物资源专业部,  长春 130118)
    (东北师范大学草地研究所,  长春 130024)
  • 收稿日期:1996-02-05 修回日期:1997-01-02 出版日期:1997-08-20 发布日期:1997-08-20

Study on sampling intensity of species diversity of grassland community in the Songnen Plain of China

Yang Limin, Han Mei, Li Jiandong   

  1. 1) Sector of Wild Plant Resources , Jilin Agricutural University , Changchun  130118
    2) Institute of Grassland Science , Northeast Normal University , Changchun 130024
  • Received:1996-02-05 Revised:1997-01-02 Online:1997-08-20 Published:1997-08-20

摘要:

本文以羊草(Leymus chinensis)-杂类草群落和贝加尔针茅(Stipa baicalensis)-线叶菊(Filifolium sibiricum)群落为代表,在东北松嫩平原研究了草地植物群落物种多样性的取样强度。巢式样方种-面积曲线结果表明:两个群落的最小面积均为1/4~1/2 m2。 Pielou积累样方多样性指数-取样数曲线结果表明:羊草-杂类草群落1、1/4、1/6 m2正方形样方最小取样数分别在12、22、28个左右; 贝加尔针茅-线叶菊群落分别在10、18、25个左右。群落水平结构的复杂性导致取样数目的增加。当积累样方数超过最小取样数后,多样性指数-取样数曲线进入平衡状态,上述3种取样面积的结果趋于一致,并在概率95%水平差异不显著。赞成小面积大数目的取样策略。

关键词: 大中型兽, 受威胁状态, 人为干扰

Abstract

With Leymus chinensis-herbage and Stipa baicalensis-Filifolium sibiricum communities as deputies, the sampling intensity of species diversity of grassland communities was studied in the Songnen Plain of northeast China. The results of nested quadrat showed: the minimal area of these two communities was 1/4~1/2 m2. The results of Pielou's pooled quadrats showed: the minimal number of 1, 1/4 and 1/6 m2 of square quadrats was or so 12, 22 and 28 respectively in L. chinensis-herbage community, and 10, 18 and 25 in S. baicalensis-F. sibiricum community. The above three types of area got unanimus results in the indices of diversity at 95% of probability level. A large number of small quadrats was preferable to a small number of large quadrats.

Key words: large and middle mammals, threatened status, human disturbance