水资源保护2026，Vol.42Issue(1)：30-38,9.DOI:10.3880/j.issn.1004-6933.2026.01.004
鄱阳湖流域水系格局与连通性变化分析
Analysis of water system pattern and connectivity change in the Poyang Lake Basin
摘要
Abstract
Based on a high-precision water surface dataset,combined with water system quantitative characteristics,structural characteristics and connectivity indicators,a quantitative analysis was conducted on the changes in water system pattern and connectivity during the flood season and dry season of the Poyang Lake Basin from 1995 to 2021.The results indicate that the total length of the main rivers in the Poyang Lake Basin remains largely unchanged during both the flood and dry seasons.However,there is a phenomenon where lower-grade rivers evolve into higher-grade rivers in the tributaries.The length of Grade I rivers in different hydrological periods in 2021 showed opposite characteristics compared to 1995.The overall increase rate of Grade I river length during the flood season reached 7.81%,while the decrease rate during the dry season reached 5.83%.The water system pattern of the Poyang Lake Basin during the flood season has become more complex,with overall increases in the number of water systems and structural characteristics.The growth rates of water surface ratio,river network density,river network complexity,and river network development coefficient all exceeded 5.5%.During the dry season,the development level of water systems remained largely unchanged,but the total area of rivers and lakes gradually decreased.During the flood season,the number of nodes and river chains in the river system generally increased(growth rate exceeded 8.5%),while during the dry season,the number of nodes and river chains remained stable overall.The water system connectivity remained basically unchanged during both hydrological periods,showing good connectivity.关键词
水系格局/水系连通性/丰水期/枯水期/鄱阳湖流域Key words
water system pattern/water system connectivity/flood season/dry season/the Poyang Lake Basin引用本文复制引用
李加林,杨佳铭,刘永超,曹罗丹,周驰..鄱阳湖流域水系格局与连通性变化分析[J].水资源保护,2026,42(1):30-38,9.基金项目
国家社科基金重大项目(23&ZD105) （23&ZD105）
