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| DOI | 10.1007/s40333-024-0010-6 |
| Assessment of runoff changes in the sub-basin of the upper reaches of the Yangtze River basin, China based on multiple methods | |
| 发表日期 | 2024 |
| ISSN | 1674-6767 |
| EISSN | 2194-7783 |
| 起始页码 | 16 |
| 结束页码 | 4 |
| 卷号 | 16期号:4 |
| 英文摘要 | Quantitative assessment of the impact of climate variability and human activities on runoff plays a pivotal role in water resource management and maintaining ecosystem integrity. This study considered six sub-basins in the upper reaches of the Yangtze River basin, China, to reveal the trend of the runoff evolution and clarify the driving factors of the changes during 1956-2020. Linear regression, Mann-Kendall test, and sliding t-test were used to study the trend of the hydrometeorological elements, while cumulative distance level and ordered clustering methods were applied to identify mutation points. The contributions of climate change and human disturbance to runoff changes were quantitatively assessed using three methods, i.e., the rainfall-runoff relationship method, slope variation method, and variable infiltration capacity (Budyko) hypothesis method. Then, the availability and stability of the three methods were compared. The results showed that the runoff in the upper reaches of the Yangtze River basin exhibited a decreasing trend from 1956 to 2020, with an abrupt change in 1985. For attribution analysis, the runoff series could be divided into two phases, i.e., 1961-1985 (baseline period) and 1986-2020 (changing period); and it was found that the rainfall-runoff relationship method with precipitation as the representative of climate factors had limited usability compared with the other two methods, while the slope variation and Budyko hypothesis methods had highly consistent results. Different factors showed different effects in the sub-basins of the upper reaches of the Yangtze River basin. Moreover, human disturbance was the main factor that contributed to the runoff changes, accounting for 53.0%-82.0%; and the contribution of climate factors to the runoff change was 17.0%-47.0%, making it the secondary factor, in which precipitation was the most representative climate factor. These results provide insights into how climate and anthropogenic changes synergistically influence the runoff of the upper reaches of the Yangtze River basin. |
| 英文关键词 | economic belt; runoff change; influencing assessment; climate; human activities |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001227188300008 |
| 来源期刊 | JOURNAL OF ARID LAND
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290985 |
| 作者单位 | China Institute of Water Resources & Hydropower Research; Hohai University |
| 推荐引用方式 GB/T 7714 | . Assessment of runoff changes in the sub-basin of the upper reaches of the Yangtze River basin, China based on multiple methods[J],2024,16(4). |
| APA | (2024).Assessment of runoff changes in the sub-basin of the upper reaches of the Yangtze River basin, China based on multiple methods.JOURNAL OF ARID LAND,16(4). |
| MLA | "Assessment of runoff changes in the sub-basin of the upper reaches of the Yangtze River basin, China based on multiple methods".JOURNAL OF ARID LAND 16.4(2024). |
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