Evaluation of spatiotemporal variation and driving forces of baseflow coupled with CMIP6 and LUCC in the source region of the Yangtze River, China

Journal of Water and Climate Change, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

ABSTRACT A deeper understanding of spatiotemporal processes baseflow is critical to maintaining the ecological health and functioning alpine rivers. However, patterns future changes in are rarely assessed. Here, a coupled model framework integrating Coupled Model Intercomparison Project Phase 6, land use simulation model, Soil Water Assessment Tool was proposed. It employed identify hydrological variation under climate scenarios source region Yangzte River (SRYR). Results illustrated that changed little before 2000, main change (transition from bare grassland mid-lower reaches Tongtian River) occurred 2000 2010. Temporally, exhibited significant upward trends ssp126, ssp245, ssp370, they all followed unimodal intra-annual distribution. The contrast index (BFI) presented bimodal Spatially, increased gradually northwest southeast. In scenarios, maximum downstream River. had highest BFI, by Dangqu, Tuotuo, Chumaer BFI were controlled combination factors, including precipitation, temperature, human activity, vegetation coverage, terrain. Our findings could offer insight into evolution driving mechanisms SRYR water resources.

Language: Английский

Investigating the relationship between land use and water quality in urban waterbodies

Cleaner Water, Journal Year: 2025, Volume and Issue: unknown, P. 100070 - 100070

Published: Feb. 1, 2025

Language: Английский