Importance of Species Characteristics and Evenness in Different Type Grassland

doi:10.11733/j.issn.1007-0435.2005.04.013

›› 2005, Vol. 13 ›› Issue (4): 320-323.DOI: 10.11733/j.issn.1007-0435.2005.04.013

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Importance of Species Characteristics and Evenness in Different Type Grassland

WANG Chang-ting¹, LONG Rui-jun²

1. Institute of Biology of Northwest Plateau, Chinese Academy of Sciences, Xining, Qinghai Province, 810008, China;
2. Grassland Science College of Gansu Agriculture University, Lanzhou, Gansu Province, 730070, China

Received:2004-09-20 Revised:2005-04-12 Online:2005-11-15 Published:2005-11-15

不同类型高寒草地群落物种特征和均匀度的重要性

王长庭¹, 龙瑞军², 王启基¹, 景增春¹, 丁路明¹

1. 中国科学院西北高原生物研究所, 西宁, 810008;
2. 甘肃农业大学草业学院, 兰州, 730070

通讯作者: 龙瑞军, E-mail:wcht6@hotmail.com
作者简介:王长庭(1969- )男,博士研究生,畜牧师,主要从事恢复生态和反刍动物营养方面的研究,已发表论文10余篇
基金资助:
国家自然科学基金(30371021);中国科学院“百人计划”项目

Abstract

Abstract: Productivity is an important modality of ecosystem functioning.The species diversity of natural communities is often strongly related to their productivity.In the present paper,the relationship between productivity and species characteristics(important value),as well as the species evenness of different types of alpine meadows,was analyzed.The results indicate that there existed a notable linear response species characteristics of communities and productivity,and a negative linear relationship between the species evenness and productivity of communities,though the difference was not significant in statistic.Discrepancy in species evenness under different ecological conditions results from interspecific competition for resources,and from the species unequal distribution in species composition of different grassland type communities.

Key words: Diversity, Ecosystem function, Evenness, Species characteristic, Productivity

摘要： 通过对不同类型草地生产力与物种特征(重要值)、均匀度之间的关系研究,结果表明:群落物种特征(重要值)与生产力之间呈极显著的线性关系;物种均匀度与生产力之间呈负线性关系,但差异不显著。在自然生态系统中,由于物种间的相互作用(资源的竞争利用),物种数目在不同类型草地群落的物种组成上的不均匀分布,导致不同生境条件下均匀度的异同。

关键词: 多样性, 生态系统功能, 均匀度, 物种特征, 生产力

CLC Number:

S812
Q98

WANG Chang-ting, LONG Rui-jun. Importance of Species Characteristics and Evenness in Different Type Grassland[J]. , 2005, 13(4): 320-323.

王长庭, 龙瑞军, 王启基, 景增春, 丁路明. 不同类型高寒草地群落物种特征和均匀度的重要性[J]. , 2005, 13(4): 320-323.

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Importance of Species Characteristics and Evenness in Different Type Grassland

不同类型高寒草地群落物种特征和均匀度的重要性

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