Study on Community Quantity Character in Alpine Mixed-sown Grassland under Different Grazing Intensities

doi:10.11733/j.issn.1007-0435.2007.04.019

›› 2007, Vol. 15 ›› Issue (4): 394-397.DOI: 10.11733/j.issn.1007-0435.2007.04.019

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Study on Community Quantity Character in Alpine Mixed-sown Grassland under Different Grazing Intensities

DONG Quan-min¹, ZHAO Xin-quan², MA Yu-shou¹

1. Qinghai Academy of Animal and Veterinary Sciences, Xining 810016, China;
2. Northwest Institute of Plateau Biology, Qinghai Province 810008, China

Received:2007-01-29 Revised:2007-06-08 Online:2007-08-15 Published:2007-08-15

放牧强度对混播草地群落数量特征的影响(简报)

董全民¹, 赵新全², 马玉寿¹

1. 青海省畜牧兽医科学院, 西宁, 810016;
2. 中国科学院西北高原生物研究所, 西宁, 810001

作者简介:董全民(1972- ),男,博士,副研究员,主要从事草地放牧生态及青藏高原"黑土型"退化草地的恢复与重建工作,E-mail:dqm850@sina.com或qmDong@qhmky.com
基金资助:
国家“十五”科技攻关计划重大项目(2001BA606A-02);2005年度青海三江源自然保护区生态保护和建设总体规划科研课题及应用推广招标项目(2005-SN-1);国家“十一五”科技支撑计划重大项目(2006BAC01A02)

Abstract

Key words: Grazing intensity, Alpine mixed-sown grassland, Important value, Plant species diversity, Similarity index

摘要： 放牧强度对人工草地群落数量特征的影响,国内外学者已有报道^[1~2],而有关青藏高原的研究则很少^[3]。Reategui^[4]认为,载畜量增大将使丛生禾草向矮生禾草演替,而导致草地退化。另外,放牧强度对植物群落组成和生物多样性也有很大影响,随着放牧强度的增加,一些适口性高、再生性强、不耐牧的种类减少,而适口性差、耐牧的种类增多^[5]。本试验研究放牧强度对垂穗披碱草(Elymus nutans)/星星草(Puccinellia tenuflora)混播草地群落数量特征的影响,旨在为人工草地的放牧利用提供科学依据。

关键词: 放牧强度, 高寒混播草地, 重要值, 物种多样性, 相似性系数

CLC Number:

S812

DONG Quan-min, ZHAO Xin-quan, MA Yu-shou. Study on Community Quantity Character in Alpine Mixed-sown Grassland under Different Grazing Intensities[J]. , 2007, 15(4): 394-397.

董全民, 赵新全, 马玉寿. 放牧强度对混播草地群落数量特征的影响(简报)[J]. , 2007, 15(4): 394-397.

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Study on Community Quantity Character in Alpine Mixed-sown Grassland under Different Grazing Intensities

放牧强度对混播草地群落数量特征的影响(简报)

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