生态学报2026，Vol.46Issue(4)：1669-1683,15.DOI:10.20103/j.stxb.202505141163
喀斯特季节性雨林物种多样性空间变异及其时间动态
Spatial variability and temporal dynamics of species diversity in Karst seasonal rainforest
摘要
Abstract
The spatial distribution pattern and scale effect of species diversity are the core issues of community ecology.However,how the spatial variation and scale effect of species diversity change over time remains unclear.The karst seasonal rain forest in Southwest Guangxi is one of the hot spots of global biodiversity.Based on long-term monitoring data,this study systematically analyzed the multi-scale variation and temporal dynamics of species richness,abundance,Shannon-Weiner index,Simpson index and Pielou evenness index in a 15 hm2 northern tropical karst seasonal rainforest in Nonggang,Guangxi aiming to provide a basis for biodiversity conservation and utilization in this region.The results showed that:(1)The spatial distribution of species diversity showed high spatial heterogeneity,and the diversity of different habitats varied greatly across habitats and scales;(2)The spatial variability of diversity indices was significantly scale-dependent:the variance of species abundance and richness increased with sampling scale,while the variances of the Shannon-Weiner,Simpson,and Pielou indices decreased monotonically.The coefficient of variation of diversity also showed a linear decrease with scale;(3)Temporal dynamics analysis from 2011 to 2021 revealed distinct variation patterns among diversity indices:the variances of abundance and richness exhibited significant downward trends,whereas the variances of the Shannon-Weiner,Simpson,and Pielou indices increased significantly;The coefficient of variation of richness remained stable over time,while that of the other diversity indices increased significantly overall,with no significant changes during the later period(2016-2021).The above research results showed that the species diversity of karst seasonal rainforest had complex temporal and spatial variation characteristics,and the scaling interpretation should be carried out carefully.They also highlighted the importance of multi-scale integration and long-term monitoring for optimizing karst biodiversity conservation strategies.关键词
广西弄岗/热带喀斯特季节性雨林/物种多样性/空间尺度/时间动态/生境异质性Key words
Guangxi Nonggang/tropical karst seasonal rain forest/species diversity/spatial scale/time dynamics/habitat heterogeneity引用本文复制引用
赵中珂,向悟生,李先琨,王斌,李冬兴,陆芳,陶旺兰,黄甫昭,赵弘明,文淑均,郭屹立..喀斯特季节性雨林物种多样性空间变异及其时间动态[J].生态学报,2026,46(4):1669-1683,15.基金项目
弄岗喀斯特生态系统广西野外科学观测研究站科研能力建设项目(桂科23-026-273) （桂科23-026-273）
国家自然科学基金项目(32360281,32271599,32260276) （32360281,32271599,32260276）
