高原鼢鼠洞道空间对高寒草甸植被性状的影响

doi:10.11733/j.issn.1007-0435.2011.06.007

›› 2011, Vol. 19 ›› Issue (6): 927-932.DOI: 10.11733/j.issn.1007-0435.2011.06.007

高原鼢鼠洞道空间对高寒草甸植被性状的影响

刘锦上, 张卫国, 江小雷, 卫万荣, 葛庆征

兰州大学草地农业科技学院, 甘肃兰州730020

收稿日期:2010-08-12 修回日期:2011-10-15 出版日期:2011-12-15 发布日期:2012-07-09
通讯作者: 张卫国,E-mail:wgzhang@lzu.edu.cn
作者简介:刘锦上(1979- ),男,山东临沂人,硕士,研究方向为草原啮齿动物种群调控,E-mail:liujsh06@lzu.cn
基金资助:
国家2009科技支撑计划项目(2009BAC53B04);甘肃省重大科技成果转化项目(2GS052-A21-102)资助

Effects of Burrow Space of Plateau Zokor on Vegetation Characters on Alpine Meadows

LIU Jin-shang, ZHANG Wei-guo, JIANG Xiao-lei, WEI Wan-rong, GE Qing-zheng

College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu Province 730020, China

Received:2010-08-12 Revised:2011-10-15 Online:2011-12-15 Published:2012-07-09

摘要/Abstract

摘要： 为了探明高原鼢鼠(Myospalax baileyi)在草地生态系统中的生态学地位,采用网格穿刺法对高原鼢鼠不同洞道空间与植被性状的对应关系以及对洞道上方植被特征的影响进行了研究。结果表明:洞道空间与鼠群密度成负相关,35%～45%的洞道空间是鼠群密度升降的临界区间,也是种群密度相对稳定的区间;适度的洞道空间(35%～45%)对草地植被盖度无显著性影响,但对物种多样性、高度和地上生物量则存在显著促进作用(P<0.05),并可显著提高禾草的优势度(P<0.05),弱化毒害草和根茎型莎草的竞争力;洞道上方植被物种多样性显著低于对照(P<0.05),植被高度和地上生物量均显著高于对照(P<0.05),而盖度则与对照无显著差异;同时,禾草和杂类草在群落中的优势地位也显著高于对照(P<0.05),而毒害草和莎草则显著低于对照(P<0.05)。因此,高原鼢鼠对植被的影响在很大程度上具有建设和修复的性质,是植被自然动态过程的组成部分,即使从人类经济利益的角度出发,这种影响也同样具有积极的意义。

关键词: 高原鼢鼠, 洞道空间, 植被性状

Abstract: In order to further explore ecological functions of plateau zokor(Myospalax baileyi) in grassland ecological system,the relationship between different tunnel space and vegetation characteristics above burrows was studied by the "grid-puncture" method.Results indicated that there was a negative relationship between tunnel space and zokor density.Burrow space of 35%~45% was the required threshold of zokor density to provide relative stability.The proper burrow space(35%~45%)had no effects on vegetation coverage but had significantly positive effects on plant species diversity,height and biomass(P<0.05).It also enhanced dominant grass and weakened the competition of inferior and poisonous weeds.Compared with control,vegetation height and biomass above burrows was significantly higher,plant diversity was significantly lower(P<0.05).Vegetation coverage has no change.The dominant grasses and forbs were significantly higher than that of control(P<0.05).while noxious weeds and sedges were significantly lower than control(P<0.05).These results suggested that plateau zokor had an important role on vegetation dynamics and restoration,and a positive influence on grassland economics.

Key words: Plateau zokor, Tunnel space, Vegetation characters

中图分类号:

刘锦上, 张卫国, 江小雷, 卫万荣, 葛庆征. 高原鼢鼠洞道空间对高寒草甸植被性状的影响[J]. , 2011, 19(6): 927-932.

LIU Jin-shang, ZHANG Wei-guo, JIANG Xiao-lei, WEI Wan-rong, GE Qing-zheng. Effects of Burrow Space of Plateau Zokor on Vegetation Characters on Alpine Meadows[J]. , 2011, 19(6): 927-932.

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高原鼢鼠洞道空间对高寒草甸植被性状的影响

Effects of Burrow Space of Plateau Zokor on Vegetation Characters on Alpine Meadows

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