广西北部湾三叶鱼藤与桐花树、白骨壤潜在适生区及其生态位重叠研究  

Potential Suitable Areas and Ecological Niche Overlap of Derris trifoliata,Aegiceras corniculatum and Avicennia marina in Beibu Gulf of Guangxi

作　　者：李丽凤[1,2] 刘文爱 韦江玲 薛云红 蒋卫国 刘泽宇[1] LI Lifeng;LIU Wenai;WEI Jiangling;XUE Yuhong;JIANG Weigou;LIU Zeyu(School of Design and Creativity,Guilin University of Electronic Technology,Beihai 536000,Guangxi Zhuang Autonomous Region,P.R.China;Guangxi Key Laboratory of Mangrove Conservation and Utilization,Guangxi Academy of Marine Science(Guangxi Mangrove Research Center),Beihai 536000,Guangxi Zhuang Autonomous Region,P.R.China;Guangxi Zhuang Autonomous Region Shankou Mangrove Ecological National Nature Reserve Management Center,Beihai 536000,Guangxi Zhuang Autonomous Region,P.R.China;Beijing Normal University,Beijing 100875,P.R.China)

机构地区：[1]桂林电子科技大学设计与创意学院,广西北海536000 [2]广西海洋科学院(广西红树林研究中心)广西红树林保护与利用重点实验室,广西北海536000 [3]广西壮族自治区山口红树林生态国家级自然保护区管理中心,广西北海536000 [4]北京师范大学,北京100875

出　　处：《湿地科学》2024年第3期327-336,共10页Wetland Science

基　　金：NSFC-广西联合基金重点支持项目(U21A2022);国家自然科学基金地区基金项目(32060282);广西红树林保护与利用重点实验室项目(GKLMC-20A06)资助。

摘　　要：三叶鱼藤(Derris trifoliate)与红树林竞争生境,破坏红树林植物生态系统。深入了解三叶鱼藤、桐花树(Aegiceras corniculatum)、白骨壤(Avicennia marina)潜在适宜生境的空间分布预测及生态位分析,确定三者之间的生境竞争关系,对三叶鱼藤防治和红树林保护具有重要意义。以广西北部湾三叶鱼藤、桐花树、白骨壤为研究对象,利用ENM Tools工具,筛选出16个环境因子,采用R语言,调用kuenm包,优化最大熵模型的倍频和特征组合参数,建立植物分布的预测模型,分析3种植物的潜在适生区空间分布及生态位重叠度。研究结果表明,高程为影响三叶鱼藤、桐花树和白骨壤分布的主要环境因子,适合3种植物分布的高程最小值从小到大依次为白骨壤、桐花树和三叶鱼藤;适合三叶鱼藤生长的最暖季平均海表盐度小于11.226‰,三叶鱼藤更适合生长在盐度较低的高潮滩位区域;生态位宽度从大到小依次为白骨壤、桐花树和三叶鱼藤,其值分别为0.280 6、0.259 5和0.135 0;三叶鱼藤与桐花树、白骨壤生态位重合度值分别为0.903 4、0.441 8,表明三叶鱼藤与桐花树之间具有较大的竞争关系;预测的三叶鱼藤、桐花树、白骨壤的最优适生区面积分别为5 603.35 hm^(2)、13 112.28 hm^(2)、11 794.86 hm^(2),其中桐花树和三叶鱼藤最优适生重叠的区域主要位于廉州湾。The competition between Derris trifoliata and mangrove forests has led to mangrove ecosystem destruction. Understanding the spatial distribution prediction and niche analysis of Derris trifoliata, Aegiceras corniculatum, and Avicennia marina is crucial for discerning their competitive relationships. This knowledge is significant for both Derris trifoliata control and mangrove protection. However, the current research gap lies in the distribution of Derris trifoliata and its overlapping niches with mangrove plants. This study focuses on Derris trifoliata, Aegiceras corniculatum, and Avicennia marina sourced from the Beibu Gulf of Guangxi.Using ENMTools, we screened sixteen environmental variables, and the kuenm package in R-optimized frequency and feature combination parameters for the MaxEnt model. This allowed us to establish a plant distribution prediction model and explore the spatial distribution and niche overlap of these three plants. The study revealed that elevation emerged as the primary environmental factor influencing the distribution of Derris trifoliata, Aegiceras corniculatum, and Avicennia marina. Optimal elevations for the three plants followed the sequence: Avicennia marina, Aegiceras corniculatum, and Derris trifoliata. Derris trifoliata thrived in areas with an average sea surface salinity of less than 11.226‰ during the warmest season, suggesting its preference for the high tide zone with lower salinity. The ecological niche width exhibited a decreasing trend among Avicennia marina, Aegiceras corniculatum, and Derris trifoliata, with values of 0.280 6, 0.259 5,and 0.135 0, respectively. Notably, the ecological niche overlap values for Derris trifoliata with Aegiceras corniculatum and Avicennia marina were 0.903 4 and 0.441 8, signifying a higher degree of resource utilization similarity between Derris trifoliata and Aegiceras corniculatum and a more pronounced competitive relationship. Model predictions identified optimal suitable areas for Derris trifoliata, Aegiceras corniculatum,and Avice

关 键 词：最大熵模型 广西北部湾 三叶鱼藤 红树林 适生区 

分 类 号：S718.5[农业科学—林学]