文献类型：期刊文献

英文题名：Patterns of local species richness and their associations with functional traits in a 60-ha tropical forest dynamics plot

作者：Zang, Lipeng[1,2] Xu, Han[3] Lin, Mingxian[3] Zang, Runguo[1,2]

第一作者：Zang, Lipeng

通信作者：Zang, RG[1];Zang, RG[2]

机构：[1]Chinese Acad Forestry, Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm, State Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern Chin, Nanjing 210037, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China

年份：2019

卷号：10

期号：4

外文期刊名：ECOSPHERE

收录：;Scopus(收录号：2-s2.0-85065014941);WOS:【SCI-EXPANDED(收录号:WOS:000472716600001)】；

基金：This work was supported by the National Natural Science Foundation of China (41771059, 31670628) and the Central Public-interest Scientific Institution Basal Research Fund (CAFYBB2017ZE001). Runguo Zang designed this study. Han Xu and Mingxian Lin performed the field works. Lipeng Zang, Han Xu performed data analysis. Lipeng Zang, Runguo Zang, and Han Xu wrote the manuscript. We thank Prof. Shirong Liu, Prof. Fangliang He, and Prof. Stephen Hubbell, who initiated the establishment of the 60-ha forest dynamics plot, for their academic ideas and consistent helps in subsequent research and maintenance of the FDP.

语种：英文

外文关键词：ecological strategy; individual species-area relationships; local species richness; plant functional trait syndrome; tropical montane rainforest

摘要：Understanding the underlying mechanisms of diversity maintenance in tropics remains a challenge for ecologists. To reveal the underlying mechanism from a plant-eye-view perspective, we examined the patterns of local species richness which was defined as the number of species around individuals of a target species within circles of different radii and their correlations with major plant functional traits in a tropical montane rainforest. In 2012, we established a 60-ha forest dynamics plot (FDP) in tropical montane rainforest on Hainan Island, China. In 2013, we measured eight functional traits (specific leaf area [SLA], leaf dry matter content [LDMC], wood density, potential maximum height, leaf carbon content [LCC], leaf nitrogen content [LNC], leaf phosphorus content [LPC], and leaf potassium content) of all the species in the FDP. Based on all the mapped individuals that had a diameter at breast height >= 10 cm, we utilized individual species-area relationships function (ISAR(s)(r)) combined with the heterogeneous Poisson null model to quantify the patterns of local species richness at scales from 1 to 50 m. Regression analysis was used to determine which functional traits could influence the local diversity pattern. Results showed that the 123 ISAR(s)(r) curves were relatively similar and no species seemed to be extremely higher or lower than the average of all the ISAR(s)(r) curves. The percentage of species that behaved predominantly as accumulators or repellers or neutrally was 42.23%, 13.82%, and 43.9% at scale of <30 m, respectively. But at scales >= 30 m, more than 70% of all species behaved neutrally suggesting that facilitative interactions probably occurred when neighborhoods were <30 m apart. Among the eight measured traits, the SLA, LNC, and LPC were negatively associated with local species richness. Our results indicated that (1) the spatial community structure was not controlled by key species; (2) facilitative interactions played an important role in local diversity maintenance; (3) species with conservative functional trait syndromes were more likely to have relatively high local species richness in the tropical montane rainforest on Hainan Island, China.