| 弄岗北热带喀斯特季节性雨林15 hm2动态监测样地树木死亡特征分析 |
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| 引用本文： | 李雨菲,李先琨,郭屹立,李冬兴,王斌,向悟生,黄甫昭,文淑均,李健星,陆树华,刘晟源.弄岗北热带喀斯特季节性雨林15 hm2动态监测样地树木死亡特征分析[J].植物科学学报,2022,40(2):177-186. |
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| 作者姓名： | 李雨菲 李先琨 郭屹立 李冬兴 王斌 向悟生 黄甫昭 文淑均 李健星 陆树华 刘晟源 |
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| 作者单位： | 1. 桂林理工大学旅游与风景园林学院, 广西桂林 541006;
2. 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 广西桂林 541006;
3. 广西弄岗国家级自然保护区管理中心, 广西崇左 532400 |
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| 基金项目： | 国家自然科学基金（32071540，31800371，31760141）；国家重点研发计划（2019YFC0507503）。 |
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| 摘 要： | 以广西弄岗北热带喀斯特季节性雨林15 hm2森林动态监测样地为对象，结合2011年和2016年两次调查数据，分析5年间样地树木死亡个体的数量、径级结构和空间格局特征等。结果显示：2011年至2016年，样地有86.5%的树种出现了个体死亡的现象，死亡个体占个体总数的14.4%；死亡个体的聚集程度随空间尺度的增大而逐渐减弱；小径级个体死亡与周边邻体和环境的关联性较大；竞争是影响弄岗北热带喀斯特季节性云林树木死亡的主要因素。综合来看，北热带喀斯特季节性雨林内树木死亡并非是一个完全随机的过程，而是树木本身特征和生物与非生物环境共同作用的结果。
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| 关 键 词： | 喀斯特季节性雨林 树木死亡 径级 空间格局 驱动因素 |
| 收稿时间： | 2021-08-15 |
Analysis of tree mortality characteristics in a dynamic northern tropical karst seasonal rainforest in Nonggang,Guangxi, southern China |
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| Li Yu-Fei,Li Xian-Kun,Guo Yi-Li,Li Dong-Xing,Wang Bin,Xiang Wu-Sheng,Huang Fu-Zhao,Wen Shu-Jun,Li Jian-xing,Lu Shu-Hua,Liu Sheng-Yuan.Analysis of tree mortality characteristics in a dynamic northern tropical karst seasonal rainforest in Nonggang,Guangxi, southern China[J].Plant Science Journal,2022,40(2):177-186. |
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| Authors: | Li Yu-Fei Li Xian-Kun Guo Yi-Li Li Dong-Xing Wang Bin Xiang Wu-Sheng Huang Fu-Zhao Wen Shu-Jun Li Jian-xing Lu Shu-Hua Liu Sheng-Yuan |
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| Institution: | 1. College of Tourism and Landscape Architecture, Guilin University of Technology, Guilin, Guangxi 541006, China;
2. Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi 541006, China;
3. Administration of Nonggang National Nature Reserve of Guangxi, Chongzuo, Guangxi 532400, China |
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| Abstract: | We conducted two surveys (in 2011 and 2016) of a 15 hm2 dynamic monitoring plot in a tropical karst seasonal rainforest in northern Nonggang, China, and analyzed the number, diameter structure, and spatial pattern characteristics of tree mortality in the plot over time. Results showed that from 2011 to 2016, 86.5% of the tree species in the plot had individual deaths, accounting for 14.4% of the total number of individuals. The diameter class of dead trees showed an inverted "J" shaped distribution, consistent with the diameter class structure of standing trees. Competition was the main factor affecting tree death. In summary, tree death in the northern tropical karst seasonal rainforest was not a completely random process, but due to the combined effects of tree characteristics and biological and non-biological environments. |
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| Keywords: | Karst monsoon forest Tree death Diameter class Spatial pattern Driving factors |
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