Morphology and vegetation dynamics in a macro-tidal tropical estuary with high fluvial discharge:A case study of the Salween River Delta  

高流量强潮汐热带河口形态和植被变化--以萨尔温江三角洲为例

作　　者：HE Aoyang HUANG Jiangcheng SUN Zhengbao 贺澳阳;黄江成;孙正宝

机构地区：[1]Institute of International Rivers and Eco-security,Yunnan University,Kunming 650500,China [2]Yunnan Key Laboratory of International Rivers and Transboundary Eco-security,Yunnan University,Kunming650500,China [3]School of Engineering,Yunnan University,Kunming 650500,China

出　　处：《Journal of Geographical Sciences》2025年第3期577-597,共21页地理学报(英文版)

基　　金：National Natural Science Foundation of China,No.41906148,No.42271086;Rejuvenating Yunnan Talents Support Plan Young Talent Program,No.XDYC-QNRC-2023-0322。

摘　　要：A macro-tidal tropical estuary with high fluvial discharge is characterized by both fragility and remarkable dynamism.This study utilizes the Salween River Delta(SRD)as a case example to examine the interplay between morphology and vegetation under similar tidal conditions.Our analysis of correlations and inferences revealed several significant trends in the SRD:(1)an overall expansion of land area and intertidal vegetation,with the most pronounced changes occurring in the eastern sector;(2)the predominance of river discharge influencing the southwestern and northern sectors,contrasted with the primary impact of storm surges in the eastern sector;and(3)three distinct causal relationships among estuarine morphology,vegetation,storm surges,and river discharge:a direct model where river discharge shapes estuarine morphology,a progressive model in which river discharge affects vegetation distribution,subsequently influencing estuarine morphology,and a hybrid model where storm surges directly impact vegetation and indirectly modify its distribution through changes in estuarine morphology.The stability of sediment supply and the role of intertidal vegetation are crucial for the continuous seaward advance,providing a vital foundation for the protection and development of estuarine deltas.

关 键 词：high fluvial discharge macro-tidal estuary deltaic morphology intertidal vegetation Salween River Delta 

分 类 号：P343.5[天文地球—水文科学]