Spatio-temporal variability of streamflow in the Yellow River: possible causes and implications
文献类型：SCI/SSCI论文
| 作者 | Yang L. |
| 发表日期 | 2012 |
| 关键词 | streamflow trend abrupt change Yellow River China past 50 years water-resources climate-change sediment load hydrological trends united-states detect trend basin china precipitation |
| 英文摘要 | The water shortage in the Yellow River, China, has been aggravated by rapid population growth and global climate changes. To identify the characteristics of streamflow change in the Yellow River, approximately 50 years of natural and observed streamflow data from 23 hydrological stations were examined. The Mann-Kendall and Pettitt tests were used to detect trends and abrupt change points. The results show that both the natural and the observed streamflow in the Yellow River basin present downward trends from 1956 to 2008, and the decreasing rate of observed streamflow is generally faster than that of the natural streamflow. Larger drainage areas have higher declining rates, and the declining trends are intensified downstream within the mainstream. The possibility of abrupt changes in observed streamflow is higher than in natural streamflow, and streamflow series in the mainstream are more likely to change abruptly than those in the tributaries. In the mainstream, all the significant abrupt changes appear in the middle and latter half of the 1980s, but the abrupt changes occur somewhat earlier for observed streamflow than for natural streamflow. The significant abrupt change for the observed streamflow in the tributaries is almost isochronous with the natural streamflow and occurs from the 1970s to 1990s. It is implied that the slight reduction in precipitation is not the only direct reason for the streamflow variation. Other than the effects of climate change, land-use and land-cover changes are the main reasons for the natural streamflow change. Therefore, the increasing net water diversion by humans is responsible for the observed streamflow change. It is estimated that the influence of human activity on the declining streamflow is enhanced over time. |
| 出处 | Hydrological Sciences Journal-Journal Des Sciences Hydrologiques |
| 卷 | 57 |
| 期 | 7 |
| 页 | 1355-1367 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0262-6667 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30802]  |
| 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 | Yang L.. Spatio-temporal variability of streamflow in the Yellow River: possible causes and implications. 2012. |
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。