Species richness, forest types and regeneration of Schima in the subtropical forest ecosystem of Yunnan, southwestern China  

作　　者：Cindy QTang Peng-Bin Han Shuaifeng Li Li-Qin Shen Diao-Shun Huang Yun-Fang Li Ming-Chun Peng Chong-Yun Wang Xiao-Shuang Li Wei Li Wei Wang Zhi-Ying Zhang 

机构地区：[1]Institute of Ecology and Geobotany,College of Ecology and Environmental Science,Yunnan University,Kunming,650504,China [2]Research Institute on Resource Insects,Chinese Academy of Forestry,Kunming,650224,China [3]Caojian Forest Farm of Yunlong Forestry Bureau,Yunlong County,672711,Yunnan,China [4]Yunnan Academy of Forestry,Kunming,650201,China [5]Tibet Agriculture and Animal Husbandry College,Linzhi,860000,China

出　　处：《Forest Ecosystems》2020年第3期443-461,共19页森林生态系统（英文版）

基　　金：financially supported by Ministry of Science and Technology,China (Project No.2015FY210200–15)。

摘　　要：Background: Schima genus of Theaceae is confined to subtropics and tropics of South, East and Southeast Asia.Thirteen species of Schima are distributed in subtropical China. Many of them appear as dominant canopy species in the subtropical forests. To date, Schima species richness distribution patterns of China have remained unknown.Meanwhile, there has been a longtime debate as to whether forests dominated by Schima species are early or late successional forests. We aim to clarify Schima species richness patterns and these species' roles in the forest succession and regeneration dynamics of the subtropical ecosystem in Yunnan Province, China.Method: We mapped Schima species richness distribution patterns in China. Based on 71 vegetation plots, we analyzed forest characteristics, population structure, and regeneration dynamics of Schima species in Yunnan.Results: Yunnan was found to harbor the greatest richness and the highest rarity-weighted richness of Schima species in the subtropical regions of China. We classified five primary and six secondary forest types containing Schima species as one of dominants. Yunnan had the high floristic diversity and varying stand structure of forests containing Schima species. The Schima species studied generally had a sporadic regeneration type and a long lifespan. Four species(Schima argentea, Schima villosa, Schima sinensis, Schima sericans) were shade-intolerant. But three species(Schima noronhae, Schima khasiana and Schima wallichii) were considered as bi-modal type species having shade-intolerant and shade-tolerant traits. Schima noronhae was seen to be a top dominant in late successional forests, while S. wallichii was found as a top-dominant in early or middle or late successional forests. S.khasiana, Schima villosa, Schima sinensis usually appeared as a top dominant in early or middle successional secondary forests, though they also presented as a second dominant in late-successional forests. Schima argentea and Schima sericans dominated only in the early or middle/ser

关 键 词：Forest structure Regeneration dynamics SCHIMA Species richness Forest succession YUNNAN 

分 类 号：S718.5[农业科学—林学]