IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleResponse of Soil Physicochemical Properties to the Changes of the Vegetation Ecosystem on the Tibetan Plateau
王一博1; 王根绪1,2; 张春敏1; 龙训建1
Corresponding Author王根绪
Source Publication冰川冻土
Other Abstract



The investigation of soil physicochemical properties in the source regions of the Yellow River indicates that the degeneration of vegetation ecosystem on the Tibetan Plateau results in great soil environment change. By the study of chemistry characteristics of soil organic matters (OM), organic nitrogen (TN), and physical identities, including mechanism form, bulk density and conduc- tivity coefficient in typical sampling area, it is found that soil chemistry and physical properties are in regression obviously in the vegetation degenerating process. The SOM in surface layer of the meadow soil decreased from 179. 58 g·kg~(-1) to 49.48 g·kg~(-1), the hydrolysable nitrogen has lost 30%. 53% of the soil SOM in the deteriorated grassland has been lost, and the hydrolysable nitrogen has lost 28. 4%. The soil SOM in swamp land has lose 15. 11 g·kg~(-1). The soil layer is thinning, but the particle size has been coarsening. During the degradation, the soil moisture distribu-tion and content in the topsoil are changing, such as bulk density increasing and desertification. The investigation also shows that the correlation between the plant coverage and conductivity coefficient of soil is quite obvious, and the soil characteristics, physical and chemical, are changing evidently, with a degeneration of alpine ecosystem.

Keyword高寒植被 土壤环境 土地退化 土壤理化属性
Subject AreaS154.4
Indexed ByCSCD ; 北大中文核心
Funding Organization国家自然科学基金项目(3027025590102006) ; 中国科学院百人计划项目(Y105065)
Citation statistics
Cited Times:16[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
王一博,王根绪,张春敏,等. 高寒植被生态系统变化对土壤物理化学性状的影响[J]. 冰川冻土,2007,29(6):921-927.
APA 王一博,王根绪,张春敏,&龙训建.(2007).高寒植被生态系统变化对土壤物理化学性状的影响.冰川冻土,29(6),921-927.
MLA 王一博,et al."高寒植被生态系统变化对土壤物理化学性状的影响".冰川冻土 29.6(2007):921-927.
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