Influences of alpine ecosystem responses to climatic change on soil properties on the Qinghai-Tibet Plateau, China
Wang, Genxu; Wang, Yibo; Li, Yuanshou; Cheng, Huiyan
通讯作者Wang, Genxu
2007-08-01
发表期刊CATENA
ISSN0341-8162
卷号70期号:3页码:506-514
文章类型Article
摘要Alpine ecosystems are quite sensitive to global climatic changes. Drawing from two sets of remote sensing data (1986 and 2000) and field investigations, the ecological index method was used to document ecosystem changes in the Yangtze and Yellow River source regions of central Qinghai-Tibet. Although crucial to understanding alpine ecosystem responses to global climatic changes, and in assessing the potential for their rehabilitation, the impact of such changes on alpine soil characteristics, including structure, composition, water retention, as well as chemical and nutrient contents, is poorly understood. Over a 15-year period (1986-2000), climatic changes led to considerable degradation of alpine meadows and steppes. In the meadows, the surface layers of the soil became coarser, bulk density, porosity and saturated hydraulic conductivity rose, while water-holding capacity decreased. In comparison, steppe soils showed little changes in soil physical properties. Degradation of alpine ecosystems led to large losses in soil available Fe, Mn and Zn. Important losses in soil organic matter (SOM) and total nitrogen (TN) occurred in badly degraded ecosystems. Climate warming in the Qinghai-Tibet Plateau, caused by the impact of greenhouse gas, has resulted in changes of cold alpine ecosystem such as the significant alteration of the soil C and N cycles. (c) 2007 Elsevier B.V.. All rights reserved.
关键词Alpine Ecosystem Response To Climatic Change Soil Properties Degradation Qinghai-tibet Plateau
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.catena.2007.01.001
研究领域[WOS]Geology ; Agriculture ; Water Resources
收录类别SCI
关键词[WOS]DYNAMICS
语种英语
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号WOS:000248715200024
引用统计
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/10523
专题成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
作者单位1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Lanzhou Univ, Coll Resources & Envrironm, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
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Wang, Genxu,Wang, Yibo,Li, Yuanshou,et al. Influences of alpine ecosystem responses to climatic change on soil properties on the Qinghai-Tibet Plateau, China[J]. CATENA,2007,70(3):506-514.
APA Wang, Genxu,Wang, Yibo,Li, Yuanshou,&Cheng, Huiyan.(2007).Influences of alpine ecosystem responses to climatic change on soil properties on the Qinghai-Tibet Plateau, China.CATENA,70(3),506-514.
MLA Wang, Genxu,et al."Influences of alpine ecosystem responses to climatic change on soil properties on the Qinghai-Tibet Plateau, China".CATENA 70.3(2007):506-514.
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