Effect of permafrost degradation on hydrological processes in typical basins with various permafrost coverage in Western China
文献类型：期刊论文
| 作者 | Niu Li1; Ye BaiSheng1; Li Jing2; Sheng Yu2 |
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2011-04-01 |
| 卷号 | 54期号:4页码:615-624 |
| 关键词 | hydrology permafrost climate change |
| ISSN号 | 1674-7313 |
| DOI | 10.1007/s11430-010-4073-1 |
| 通讯作者 | Ye BaiSheng(yebs@lzb.ac.cn) |
| 英文摘要 | Monthly discharge of four rivers with various permafrost coverage and little anthropogenic influence was used to identify effects of permafrost degradation during the last 50 years, which has occurred because of significant increases in air temperature in the river regions. The basins of the Shule, Heihe, Shiyang and upper Yellow Rivers in northwestern China have 73%, 58%, 33% and 43% permafrost coverage, respectively. There is snow cover in the basins and no rain to supply rivers during winter. The monthly recession coefficient (RC) in winter reflects groundwater conditions. The RC has increased obviously for the Shule and Heihe rivers with 73% and 58% permafrost coverage, respectively, but did not increase for the Shiyang River, and decreased insignificantly for the upper Yellow River, which had less permafrost coverage. There is a distinct positive relationship between RC and annual negative degree-day temperature (NDDT) at the meteorological stations in the basins with high permafrost coverage. These results imply that permafrost degradation due to climate warming affects hydrological processes in winter. The effect is obvious in the basins with high permafrost coverage but negligible in those with low permafrost coverage. Permafrost degradation increases infiltration, enlarges the groundwater reservoir, and leads to slow discharge recession. The result means that hydrological processes are affected strongly by permafrost degradation in river basins with high permafrost coverage, but less in river basins with less permafrost coverage. |
| 收录类别 | SCI |
| WOS关键词 | PLATEAU ; STREAMFLOW ; DISCHARGE |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000289113000014 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556536 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ye BaiSheng |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu Li,Ye BaiSheng,Li Jing,et al. Effect of permafrost degradation on hydrological processes in typical basins with various permafrost coverage in Western China[J]. SCIENCE CHINA-EARTH SCIENCES,2011,54(4):615-624. |
| APA | Niu Li,Ye BaiSheng,Li Jing,&Sheng Yu.(2011).Effect of permafrost degradation on hydrological processes in typical basins with various permafrost coverage in Western China.SCIENCE CHINA-EARTH SCIENCES,54(4),615-624. |
| MLA | Niu Li,et al."Effect of permafrost degradation on hydrological processes in typical basins with various permafrost coverage in Western China".SCIENCE CHINA-EARTH SCIENCES 54.4(2011):615-624. |
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来源：寒区旱区环境与工程研究所
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