草业学报 ›› 2014, Vol. 23 ›› Issue (6): 320-326.DOI: 10.11686/cyxb20140638
罗黎鸣1,2,苗彦军1,武建双2,潘影2,土艳丽3,余成群2,赵延2,赵贯锋1,2,武俊喜2,*
收稿日期:
2014-04-03
出版日期:
2014-12-20
发布日期:
2014-12-20
通讯作者:
E-mail:wujx@igsnrr.ac.cn
作者简介:
罗黎鸣(1989-),男,湖南邵阳人,在读硕士
基金资助:
LUO Li-ming1,2,MIAO Yan-jun1,WU Jian-shuang2,PAN Ying2,TU Yan-li3,YU Cheng-qun2,ZHAO Yan2,ZHAO Guan-feng1,2,WU Jun-xi2
Received:
2014-04-03
Online:
2014-12-20
Published:
2014-12-20
摘要: 以拉萨河谷达孜县新仓村沟域的山地灌丛草地为研究对象,采用样方调查法探究了随海拔升高(3992~4940 m)灌丛草地群落结构、物种多样性、功能性状Rao指数的变化特征。结果表明,1)随海拔升高灌丛生物量和盖度呈先增加后降低的变化趋势,但草地盖度(71±14)%和生物量(49.18±19.17) g/m2变化不明显(P>0.05);2)随海拔升高群落物种组成存在差异,但共优种高山嵩草(0.591±0.034)和青藏苔草(0.326±0.061)的优势度无显著变化(P>0.05);3)随海拔升高草地物种丰富度、Shannon-Wiener多样性指数呈先增加后降低的“单峰曲线”变化特征;4)以株高测算的草地群落功能性状Rao指数随海拔升高而降低。物种丰富度、功能性状以及地上净初级生产力沿海拔升高的变化特征存在差异,为维持高原河谷山地灌丛草地的生态安全,未来应重视三者相互关系及其生态学机制的相关研究。
中图分类号:
罗黎鸣,苗彦军,武建双,潘影,土艳丽,余成群,赵延,赵贯锋,武俊喜. 拉萨河谷山地灌丛草地物种多样性随海拔升高的变化特征[J]. 草业学报, 2014, 23(6): 320-326.
LUO Li-ming,MIAO Yan-jun,WU Jian-shuang,PAN Ying,TU Yan-li,YU Cheng-qun,ZHAO Yan,ZHAO Guan-feng,WU Jun-xi. Variation in the biodiversity of montane shrub grassland communities along an altitudinal gradient in a Lhasa River basin valley[J]. Acta Prataculturae Sinica, 2014, 23(6): 320-326.
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