黄河三角洲湿地水文连通及驱动力分析  

Hydrological Connectivity and Driving Force of Yellow River Delta Wetland

作　　者：陈柯欣 丛丕福[2] 曲丽梅[2] 梁书秀[1] 孙昭晨[1] 吴霞[3] 许加美 张固然 CHEN Kexin;CONG Pifu;QU Limei;LIANG Shuxiu;SUN Zhaochen;WU Xia;XU Jiamei;ZHANG Guran(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;National Marine Enironmental Monitoring Center,Dalian 16023,China;Shandong Yellow River Delta National Nature Reserve 1,002 Management Station,Dongying 257453,China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]国家海洋环境监测中心,辽宁大连116023 [3]山东黄河三角洲国家级自然保护区一千二管理站,山东东营257453

出　　处：《水文》2023年第3期112-117,共6页Journal of China Hydrology

基　　金：国家重点研发计划资助项目(2017YFC0505901)。

摘　　要：湿地内的水文连通对维持湿地生态系统的完整性具有重要意义。本文以Google Eearth Engine为平台支撑,在全局尺度上利用水体面积、水文连通CFV指数(Connectivity Function Value)、像元月均淹没频率对1986—2020年黄河三角洲湿地水文连通进行定量分析,并利用灰色关联法进行驱动力分析;在淡咸水交互的典型区域尺度上选择水文环度(α指数)、节点连接率(β指数)、水文连通性(γ指数)进行区域水文连通定量分析。结果表明:(1)湿地水体面积整体增加,水文连通CFV指数减少,研究区内发生了连通阻断,重度淹没和永久性淹没主要集中在浅海区域;(2)湿地水体面积和水文连通CFV指数均呈季节性差异,自然因素对水文连通影响大于人类活动。黄河三角洲湿地水文连通性30余年一直保持中等水平。研究结果可为黄河三角洲湿地水文连通保护与修复提供参考。Hydrological connectivity is important for the integrity of wetland ecosystems in the Yellow River Delta.In this study,at the large scale,Google Eearth Engine was used to quantify the hydrological connectivity in terms of wetland water area,the hydrological connectivity function value index,and average monthly inundation frequency.The driving force analysis was conducted using gray correlation.At the typical regional scale of fresh and saline water interaction,three hydrological network connectivity indices(α、β、γ)were selected for the zonal hydrological connectivity.The results found that:(1)Overall the wetland water area rose and the hydrological connectivity function value index decreased,and the study area occurred connectivity blockage.Heavy in-undation and permanent inundation were mainly concentrated in the shallow sea area.(2)Both the wetland water area and the hydrological connectivity function value index showed seasonal trends.Natural factors influenced more on hydrological connectivity than human activity.The hydrological connectivity of the Yellow River Delta wetlands has been maintained at a medium level for 30 years.The results can provide a reference for the conservation and restoration of hydrological connectivity of wetlands in the Yellow River Delta.

关 键 词：黄河三角洲湿地 遥感 多尺度 水文连通 驱动机制 

分 类 号：X87[环境科学与工程—环境工程] TV12[水利工程—水文学及水资源] P33[天文地球—水文科学]