Sustainability, Journal Year: 2024, Volume and Issue: 16(17), P. 7600 - 7600

Published: Sept. 2, 2024

Determining the relative roles of climatic versus anthropogenic factors in runoff alterations is important for sustainable water resource utilization and basin management. The Danjiang River watershed a crucial area middle route South-to-North Water Transfer Project. In this study, four widely used quantitative methods, including simple linear regression, double mass curve, paired year with similar climate conditions, an elasticity method based on Budyko framework were applied to detect contribution variation watershed. calculation processes each systematically explained, their characteristics applications summarized. results showed that decreased significantly (p < 0.05) average change rate −3.88 mm year−1 during period 1960–2017, significant was detected 1989 0.05). Generally, consistent estimates could be derived from different methods human activity dominant driving force reduction. Although impacts estimated by conditions varied among years, other three demonstrated accounted 80.22–92.88% (mean 86.33%) total reduction annual runoff, whereas only contributed 7.12–19.78% 13.67%). study provide good reference estimating effects activities via methods.

Language: Английский