Effects of environmental factors on the distribution of plant communities in a semi-arid region of the Qinghai-Tibet Plateau
Effects of environmental factors on the distribution of plant communities in a semi-arid region of the Qinghai-Tibet Plateau
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环境因子对青藏高原半干旱区植物群落分布的影响
DOI：
10.1007/s11284-012-0951-7
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发表时间：
2012-05
影响因子：
2
通讯作者：
Ye, Bai-Sheng
中科院分区：
文献类型：
--
作者：
Wang, Zeng-Ru;Yang, Guo-Jing;Yi, Shu-Hua;Chen, Sheng-Yun;Wu, Zhen;Guan, Jian-Yue;Zhao, Chuan-Cheng;Zhao, Qiu-Dong;Ye, Bai-Sheng
在全球气候变暖的背景下，高寒生态系统植物群落与环境梯度的关系备受关注。研究了青藏高原半干旱区植物群落分布与环境因子的关系。利用双向指示种分析和典型对应分析，分析了环境因子对植物群落分布的影响。解释植物群落分布的最重要因素是多年冻土活动层的深度(记为Pf)，其次是40 cm土层的土壤水分含量。这两个因素之间有很强的相关性。随着Pf的变化，植物群落中的优势种表现出明显的过渡性。物种丰富度和物种多样性指数随着Pf值的增加而显著下降，生物量和植被盖度对Pf值变化的响应较弱。该地区植物群落的分布结构主要是由于Pf的变化造成的。此外，PF对植物群落的特征也有显著而重要的影响。
Against the background of global climate warming, the relationship between plant communities in high-cold ecosystems and environmental gradients has attracted much attention. We investigated the relationship between the distribution of plant communities and environmental factors in a semi-arid region of the Qinghai-Tibet Plateau. We analyzed the effects of environmental factors on the distribution of plant communities using two-way indicator species analysis and canonical correspondence analysis. The most important factor explaining the distribution of plant communities was the depth of the active layer of permafrost (denoted as PF), followed by soil water content at 40-cm soil depth. There was a strong correlation between these two factors. With changes in the PF, the dominant species in plant communities showed an obvious transition. The indices of species richness and species diversity decreased markedly with increasing PF, whereas biomass and vegetation coverage showed weaker responses to changes in the PF. The distribution structure for plant communities in this area mainly results from changes in the PF. Furthermore, the PF has remarkable and important effects on the characteristics of the plant community.
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DOI：
10.1360/04yd0009
发表时间：
2005-09
期刊：
Sciences in China (D)
影响因子：
--
作者：
WU Shaohong;YINYunhe;ZHENG Du;& YANG Qinye
通讯作者：
& YANG Qinye
影响因子：
4.1
作者：
Wu Qingbai;Z. Yuanlin;Liu Yonzhi
通讯作者：
Wu Qingbai;Z. Yuanlin;Liu Yonzhi
影响因子：
5.2
作者：
N. Guil;J. Hortal;S. Sánchez-Moreno;A. Machordom
通讯作者：
N. Guil;J. Hortal;S. Sánchez-Moreno;A. Machordom
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
T. Braak;F. Cateten;P. Šmilauer
通讯作者：
T. Braak;F. Cateten;P. Šmilauer
影响因子：
5.5
作者：
G. Vivian‐Smith
通讯作者：
G. Vivian‐Smith