【摘要】 自然演变和人类活动共同影响湿地水系连通性，进而影响湿地生态系统健康。为了定量评价西溪湿地水系连通性的变化，借助图论理论，将湿地河道图概化为河网图模型，并应用图论理论方法对2009年、2022年西溪湿地5个区域的水系连通性进行分析，在此基础上提出西溪湿地水系连通建议。结果表明，通过引入面积加权的图论理论方法可以较好地评价西溪湿地水系连通性，2009年西溪湿地5个区域的加权连通度定量评价结果分别为3.68、4.24、3.10、5.29和2.94；与2009年相比，2022年西溪湿地5个区域的加权连通度均减少，减少率范围为0.55%～5.75%；若根据12条断头河与就近河道相连的连通建议，西溪湿地的加权连通度较2022年有所增加，增加率范围为4.66%～34.77%，即湿地水系连通性得到提升。研究成果可为西溪湿地水生态保护与修复以及连通方案的制定提供技术支撑。更多还原

【Abstract】 Natural evolution and human activities jointly affect the connectivity of wetland water system, and thus affect the health of wetland ecosystem. In order to quantitatively evaluate the changes in the connectivity of wetland water systems of the Xixi Wetland, the wetland river map was generalized into a river network model with the help of graph theory, and the connectivity of water systems in five subdivisions of the Xixi Wetland in 2009 and 2022 was analyzed by applying the graph theory method, based on which we proposed the connectivity recommendations of the water systems in the Xixi Wetland. The results showed that the area weighted graph theory method can be used to evaluate the connectivity of wetland water system. In 2009, the quantitative evaluation results of weighted connectivity of the five subdivisions of the Xixi Wetland were3.68, 4.24, 3.10, 5.29, and 2.94, respectively. Compared with 2009, the weighted connectivity of the five subdivisions decreased, and the reduction rate ranged from 0.55% to 5.75%. According to the connectivity proposals of the 12 broken rivers connected to the nearby river, the weighted connectivity of the Xixi Wetland had increased compared with 2022, and the increase rate ranged from 4.66% to 34.77%, which indicated that the connectivity of wetland water system had been improved. The research results can provide technical support for the water ecology protection and restoration, and the formulation of connectivity schemes of the Xixi Wetland.更多还原