摘要
Abstract
Due to the significant development of karst landforms in Guizhou,the distribution of water resources is uneven,and various types of water uses cannot be fully guaranteed.According to statistical data,Guizhou currently has approximately 2000 reservoirs,most of which have shifted their primary functions from power generation and flood control to primarily water supply,with secondary considerations for power generation and flood control.This study focuses on the Hongfeng Lake Reservoir in Guizhou as the research area and employs the widely applied Range of Variability Approach(RVA)for evaluating the changes in reservoir hydrological characteristics.Based on key hydrological information,the study analyzes the hydrological regime changes of 33 crucial ecological parameters from various perspectives,including the magnitude of flow rate changes,duration,frequency,persistence,and rate of change.The dynamics of hydrological conditions are a significant driving factor affecting the structural and functional changes in the river basin ecosystem.Building upon the comprehensive analysis of the International Hydrological Alteration(IHA)index,this study quantitatively analyzes the changing patterns of hydrological conditions in the karst basin reservoirs,providing a foundation of data and theory for basin planning and decision-making.关键词
RVA法/喀斯特/水文情势/水文特征变化Key words
RVA method/Karst/hydrological regimes/changes in hydrological characteristics分类
建筑与水利
