Changes in frozen ground in the Source Area of the Yellow River on the Qinghai-Tibet Plateau, China, and their eco-environmental impacts
文献类型：期刊论文
| 作者 | Jin, Huijun; He, Ruixia; Cheng, Guodong; Wu, Qingbai; Wang, Shaoling; Lue, Lanzhi; Chang, Xiaoli |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2009-10-01 |
| 卷号 | 4期号:4页码:11 |
| 关键词 | Source Area of the Yellow River (SAYR) frozen ground cold regions ecology degradation environmental impacts |
| ISSN号 | 1748-9326 |
| DOI | 10.1088/1748-9326/4/4/045206 |
| 通讯作者 | Jin, Huijun(hjjin@lzb.ac.cn) |
| 英文摘要 | The Source Area of the Yellow River is located in the mosaic transition zones of seasonally frozen ground, and discontinuous and continuous permafrost on the northeastern Qinghai-Tibet Plateau. Vertically, permafrost is attached or detached from frost action. The latter can be further divided into shallow (depth to the permafrost table <= 8 m), deep (>8 m) and two-layer permafrost. Since the 1980s, air temperatures have been rising at an average rate of 0.02 degrees C yr(-1). Human activities have also increased remarkably, resulting in a regional degradation of permafrost. The lower limit of permafrost has risen by 50-80 m. The average maximum depth of frost penetration has decreased by 0.1-0.2 m. The temperatures of the suprapermafrost water have increased by 0.5-0.7 degrees C. General trends of permafrost degradation include reduction in areal extent from continuous and discontinuous to sporadic and patchy permafrost, thinning of permafrost, and expansion of taliks. Isolated patches of permafrost have either been significantly reduced in areal extent, or changed into seasonally frozen ground. Degradation of permafrost has led to a lowering of ground water levels, shrinking lakes and wetlands, and noticeable change of grassland ecosystems alpine meadows to steppes. The degradation of alpine grasslands will cause further degradation of permafrost and result in the deterioration of ecological environments as manifested by expanding desertification and enhancing soil erosion. |
| 收录类别 | SCI |
| WOS关键词 | NORTHEASTERN CHINA ; PERMAFROST ; MOUNTAINS ; DEGRADATION |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000272900500063 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556273 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Jin, Huijun |
| 作者单位 | Chinese Acad Sci, State Key Lab Frozen Soils Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Huijun,He, Ruixia,Cheng, Guodong,et al. Changes in frozen ground in the Source Area of the Yellow River on the Qinghai-Tibet Plateau, China, and their eco-environmental impacts[J]. ENVIRONMENTAL RESEARCH LETTERS,2009,4(4):11. |
| APA | Jin, Huijun.,He, Ruixia.,Cheng, Guodong.,Wu, Qingbai.,Wang, Shaoling.,...&Chang, Xiaoli.(2009).Changes in frozen ground in the Source Area of the Yellow River on the Qinghai-Tibet Plateau, China, and their eco-environmental impacts.ENVIRONMENTAL RESEARCH LETTERS,4(4),11. |
| MLA | Jin, Huijun,et al."Changes in frozen ground in the Source Area of the Yellow River on the Qinghai-Tibet Plateau, China, and their eco-environmental impacts".ENVIRONMENTAL RESEARCH LETTERS 4.4(2009):11. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。