Work

Response to hydrometeorological changes and evaluation of habitat quality in the Dongting Lake basin, China

Year: 2024

Type: article

Abstract: ABSTRACT With the advancement of hydraulic engineering processes, surface water resources are encountering unprecedented crises that threaten social and ecological sustainability. This study analyzed the response changes and potential correlations between river conditions and climate change in the Dongting Lake (DTL) basin using gray correlation analysis and the LSTM model. Additionally, the InVEST model was employed to further assess the distribution of habitat quality within the basin. The results of the study showed that (1) the range of variation of environmental flows in each tributary became significantly narrower and the frequency of extreme hydrological conditions was reduced in the period after the abrupt hydrological change. (2) The hydrological status had a higher degree of correlation with the rainfall index, and the performance is more prominent on the Xiang River, and the influence of temperature is less. (3) Except in the Xiang River Basin, human activities are the dominant factor of runoff variation, and the annual contribution is generally higher than 50%. (4) Habitat quality in the ‘high’ distribution was the most guarded and always accounted for more than 60% of the basin, while habitat quality in the east-central part of the DTL basin and around the DTL was generally low.

Source: Journal of Water and Climate Change

DOI: 10.2166/wcc.2024.179

Authors: Hongxiang Wang, Xiangyu Bai, Mo Zhou, Yinchu Ma, Weiqi Yuan, Wenxian Guo

Institutions: North China University of Water Resources and Electric Power, Northeast Forestry University

Language: English

Topic: Hydrology and Watershed Management Studies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Climate action

Open Access status: diamond

Funders: Science and Technology Program of Guizhou Province, Science and Technology Plan Projects of Tibet Autonomous Region