Statistical estimation of the impacts of glaciers and climate change on river runoff in the headwaters of the Yangtze River
文献类型：SCI/SSCI论文
| 作者 | Yao Z. J. ; Liu Z. F. ; Huang H. Q. ; Liu G. H. ; Wu S. S. |
| 发表日期 | 2014 |
| 关键词 | tibetan plateau northwest china alpine glaciers source region retreat basin gis himalaya trends |
| 英文摘要 | Impacts of glacier and climate change on river runoff in the source region of the Yangtze River (SRYR) were investigated. The non-parametric Mann-Kendall test was used to detect monotonic trends in the glacier area, which was manually digitized from aerial photographs and satellite images. An exponential function between glacier volume and glacier area was established through glacier volume and area data at the SRYR, and glacier melt runoff was calculated on the basis of the function and glacier area change. Results showed that overall the climate of the SRYR became warmer and wetter during 1964-2009. During this period, the mean air temperature (MAT) showed a statistically significant increasing trend that showed a decrease before 1986 and a steady increase since 2001. The total glacier area loss from 1986 to 2009 was approximately 119.3 km(2), i.e., 10.1% of the total area in 1986 and was mainly caused by an increasing trend of air temperature in the basin. The area of the glacier in the Geladandong region exhibited an increasing trend from 1964 to 1986, which was mainly caused by an increasing trend of precipitation as snowfall in the frozen season that led to increased glacier accumulation. The glacier melt runoff from 1986 to 2009 was 2.02 x 10(8) m(3)/10 y at the SRYR, which accounted for 17.5% of the total runoff changes. The increase in runoff induced by precipitation was 9.47 x 10(8) m(3)/10 y, and the evapotranspiration-induced runoff consumption was 39.95 x 10(8) m(3)/10 y, which accounted for 81.0% of precipitation. These results imply that less than 20% of precipitation could be transformed into runoff at the SRYR. (C) 2013 Elsevier Ltd and INQUA. All rights reserved. |
| 出处 | Quaternary International |
| 卷 | 336 |
| 页 | 89-97 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1040-6182 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29451]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yao Z. J.,Liu Z. F.,Huang H. Q.,et al. Statistical estimation of the impacts of glaciers and climate change on river runoff in the headwaters of the Yangtze River. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。