Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.ecoleng.2014.07.022 |
Comparison of ecosystem characteristics between degraded and intact alpine meadow in the Qinghai-Tibetan Plateau, China | |
You, QuanGang; Xue, Xian; Peng, Fei; Xu, Manhou; Duan, Hanchen; Dong, Siyang | |
通讯作者 | Xue, Xian |
来源期刊 | ECOLOGICAL ENGINEERING
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ISSN | 0925-8574 |
EISSN | 1872-6992 |
出版年 | 2014 |
卷号 | 71页码:133-143 |
英文摘要 | Climate warming and overgrazing are inducing degradation of the alpine meadow ecosystem on the Qinghai-Tibetan Plateau. The Plateau is an important pastoral region in China and controversy surrounds the estimated carbon release occurring in this region of the world. Nevertheless, little comprehensive research analyzing land degradation has been conducted involving multiple factors in this region. Usingtwo years of observational data, we compared differences in air temperature and relative humidity, soil temperature and moisture, soil texture, soil bulk density, soil organic carbon, soil respiration, vegetation height, coverage and biodiversity, above- and below ground biomass between moderately degraded and intact alpine meadow, and analyzed their relationships. The results show that the main process occurring during degradation was that Spenceria species and weeds with deep roots and a relatively high ability to resist drought replaced Kobresia species that previously exhibited high vegetation coverage and low vegetation height in alpine meadows of the Qinghai-Tibetan Plateau; these changes fundamentally affected corresponding changes in soil physical, chemical and thermal characteristics of the meadows. The change of vegetation species is believed to be the result of drought in the shallow soil of this habitat and is controlled by temperature and precipitation. The results suggest that a good collocation between temperature and precipitation is beneficial to the development of the alpine meadows; conversely, a poor pairing of temperature and precipitation not only causes the degradation of alpine meadows, it can even continually intensify the process by creating a vicious circle involving changes in soil physical, chemical, thermal and hydraulic conditions. (C) 2014 Elsevier B.V. All rights reserved. |
英文关键词 | Alpine meadow Degradation Plant Soil Qinghai Tibetan Plateau |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000343151000019 |
WOS关键词 | PERMAFROST DEGRADATION ; SOIL ; CLIMATE ; DESERTIFICATION ; TEMPERATURE ; VEGETATION ; GRASSLAND ; RESPONSES ; DENSITY ; QUALITY |
WOS类目 | Ecology ; Engineering, Environmental ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Engineering |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/181665 |
作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | You, QuanGang,Xue, Xian,Peng, Fei,et al. Comparison of ecosystem characteristics between degraded and intact alpine meadow in the Qinghai-Tibetan Plateau, China[J]. 中国科学院西北生态环境资源研究院,2014,71:133-143. |
APA | You, QuanGang,Xue, Xian,Peng, Fei,Xu, Manhou,Duan, Hanchen,&Dong, Siyang.(2014).Comparison of ecosystem characteristics between degraded and intact alpine meadow in the Qinghai-Tibetan Plateau, China.ECOLOGICAL ENGINEERING,71,133-143. |
MLA | You, QuanGang,et al."Comparison of ecosystem characteristics between degraded and intact alpine meadow in the Qinghai-Tibetan Plateau, China".ECOLOGICAL ENGINEERING 71(2014):133-143. |
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