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Forest characteristics and population structure of a threatened palm tree caryota obtusa in the karst forest ecosystem of Yunnan,China

引用

Journal of Plant Ecology 2022年第4期15卷 829-843页

作者： Cindy Q.Tang Xia Lu Min-Rui Du Shu-Li Xiao Shuaifeng Li Peng-Bin Han Jia-Le Zeng Jian-Ran Wen Shi-Qian Yao You-Cai Shi Yun-Fang Li Ming-Chun Peng Chong-Yun Wang Zhi-Ying Zhang Institute of Ecology and Geobotany College of Ecology and Environmental ScienceYunnan UniversityKunming 650504China Research Institute on Resource Insects Chinese Academy of ForestryKunming 650224China Management Office of Yunlong Tianchi National Nature Reserve GuolangDali PrefectureYunnan 672700China

caryota obtusa of Arecaceae is a fascinating palm tree native to southwestern China,India,Myanmar,Thailand,Laos and *** is an economically important and threatened species and appears as a canopy dominant in some karst areas in *** aim to clarify the forest structure,species diversity,population status and regeneration dynamics of *** in the karst forest ecosystem of Yunnan,*** established 56 vegetation plots dominated by *** in 10 counties of southern *** on the plot data,we analyzed the community stratification,floristic composition and ***’s population *** used questionnaires to interview local people and recorded the human activity history in ***-dominated *** obtusa palm forests were distributed on limestone mountain slopes and *** were seven forest community *** stratification of each community included arborous layer,shrub layer and *** communities had rich species *** all the plots as a whole of each community type,Shannon–Wiener diversity index of either woody or herbaceous species ranged from 2.1 to *** diameter at breast height(DBH)-class frequency distribution of *** was a multimodal *** regeneration was sporadic and dependent on intermediate natural *** the current population structure,a number of *** trees with small DBHs consisted mainly of the forest communities with no or a slight degree of human *** human activities terribly hindered recruitment of ***,followed by the medium intensity of human activities.

关键词： caryota obtusa community structure species diversity population structure regeneration dynamics human disturbance

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