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Dramatic changes in the horizontal structure of mangrove forests in the largest delta of the northern Beibu Gulf, China

引用

Acta Oceanologica Sinica 2023年第7期42卷 116-123页

作者： Riming Wang Zhijun Dai Hu Huang Xixing Liang Xiaoyan Zhou Zhenming Ge Baoqing Hu Guangxi Key Laboratory of Marine Environmental Change and Disaster in Beibu Gulf/Beibu Gulf Ocean Development Research Center Beibu Gulf UniversityQinzhou 535011China State Key Laboratory of Estuarine and Costal Research East China Normal UniversityShanghai 200062China Key Laboratory of Environment Change and Resources Use in Beibu Gulf(Nanning Normal University) Ministry of EducationNanning 510310China

The horizontal structure of mangrove forests is an important characteristic that reflects a significant signal for coupling between mangroves and external *** the loss and gain of mangroves has received much attention,little information about how the horizontal structure of mangrove forests develops from the seedling stage to maturity has been ***,remote sensing images taken over approximately 15 years,UVA images,nutrient elements,sediments,and Aegiceras corniculatum vegetation parameters of the ecological quadrats along the Nanliu Delta,the largest delta of the northern Beibu Gulf in China,are analyzed to reveal changes in the horizontal structure of mangroves and their associated driving *** results show that both discrete structures and agglomerated structures can often be found in *** seedlings and ***,the combination of seedlings growing into maturity and new seedlings filling in available gaps causes the discrete structure of *** to gradually vanish and the agglomerate structure to become *** aggregated structure of seedlings,compared to the discrete structure,can enhance the elevation beneath mangroves by trapping significantly more sediments,providing available spaces and conditions for seedlings to continue ***,by catching fine sediments with enriched nutrients,the survival rate of *** seedlings in the agglomerated structure can be much higher than that in the discrete *** results highlight the significance of the agglomeration of ***,which can be beneficial to coastal mangrove restoration and management.

关键词： deltaic mangrove Aegiceras corniculatum horizontal structure biomorphodynamic processes Nanliu Delta

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