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| 青藏高原多年冻土区高寒植被物种多样性和地上生物量 | |
| 引用本文： | 杨兆平,欧阳华,宋明华,周才平,杨文斌,刘小平.青藏高原多年冻土区高寒植被物种多样性和地上生物量[J].生态学杂志,2010,29(4). |
| 作者姓名： | 杨兆平 欧阳华 宋明华 周才平 杨文斌 刘小平 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100039 2. 中国科学院地理科学与资源研究所,北京,100101;国际山地综合发展中心,加德满都,G.P.O.Box,3226,尼泊尔 3. 中国科学院地理科学与资源研究所,北京,100101 4. 鄂尔多斯市环境保护中心检测站,内蒙古鄂尔多斯,017000 |
| 基金项目： | 国家重点基础研究发展规划项目(2005CB422005); 科技部科技基础性工作专项资助项目(2006FY110200) |
| 摘 要： | 基于样方调查统计了青藏高原多年冻土区高寒草地生态系统植物的科属组成,计算了多样性指数和均匀度指数,探讨了多年冻土退化对高寒草地物种多样性的影响。结果表明:多年冻土退化过程中物种组成在属和物种丰富度上呈现降低趋势,湿、中生植物逐渐被旱中生和旱生植物替代;青藏高原多年冻土退化会导致高寒草地生态系统的物种多样性和初级生产力的降低,影响高寒草地生态系统的稳定性;物种多样性与初级生产力具有密切的抛物线型关系。 |
| 关 键 词： | 多年冻土退化 高寒草地 生态系统 物种多样性 地上生物量 青藏高原 |
Species diversity and above-ground biomass of alpine vegetation in permafrost region of Qinghai-Tibetan Plateau |
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| YANG Zhao-ping,OUYANG Hua,SONG Ming-hua,ZHOU Cai-ping,YANG Wen-bin,LIU Xiao-ping.Species diversity and above-ground biomass of alpine vegetation in permafrost region of Qinghai-Tibetan Plateau[J].Chinese Journal of Ecology,2010,29(4). | |
| Authors: | YANG Zhao-ping OUYANG Hua SONG Ming-hua ZHOU Cai-ping YANG Wen-bin LIU Xiao-ping |
| Institution: | YANG Zhao-ping1,2,OUYANG Hua1,3,SONG Ming-hua1,ZHOU Cai-ping1,YANG Wen-bin1,LIU Xiao-ping4 (1Institute of Geographic Sciences , Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China,2Graduate University of Chinese Academy of Sciences,Beijing 100039,3International Centre for Integrated Mountain Development,G.P.O.Box 3226,Khumaltar,Kathm,u,Nepal,4Monitoring Station of Environmental Protection Center of Ordos,Ordos 017000,Inner Mongolia,China) |
| Abstract: | Based on quadrat investigation,this paper studied the species composition of alpine vegetation in permafrost region of Qinghai-Tibetan Plateau,calculated the diversity index and evenness index,and approached the effects of permafrost degradation on the species diversity.During the permafrost degradation,the family number and species richness decreased,and the hygrophytes and mesophytes were gradually replaced by meso-xerophytes and xerophytes.Permafrost degradation lowered the species diversity and primary ... |
| Keywords: | permafrost degradation alpine vegetation ecosystem species diversity above-ground biomass Qing-Tibetan Plateau |
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