物种丰富度
优势(遗传学)
生态学
生物量(生态学)
热带和亚热带湿润阔叶林
生物多样性
物种多样性
生态系统
温带气候
生物
森林生态学
温带雨林
农林复合经营
亚热带
生物化学
基因
作者
Suhui Ma,Guoping Chen,Qiong Cai,Chengjun Ji,Biao Zhu,Zhiyao Tang,Shuijin Hu,Jingyun Fang
出处
期刊:Ecology
[Wiley]
日期:2024-12-17
摘要
Abstract Mycorrhizal associations drive plant community diversity and ecosystem functions. Arbuscular mycorrhiza (AM) and ectomycorrhiza (EcM) are two widespread mycorrhizal types and are thought to differentially affect plant diversity and productivity by nutrient acquisition and plant–soil feedback. However, it remains unclear how the mixture of two mycorrhizal types influences tree diversity, forest biomass, and their relationship at large spatial scales. Here, we explored these issues using data from 1247 plots (600 m 2 for each) across China's natural forests located mostly in temperate and subtropical regions. Both AM‐dominated and EcM‐dominated forests show relatively lower tree species richness and stand biomass, whereas forests with the mixture of mycorrhizal strategies sustain more tree species and higher biomass. Interestingly, the positive effect of tree diversity on biomass is stronger in forests with low (≤50%) than high AM tree proportion (>50%), reflecting a shift from the complementarity effect to functional redundancy with increasing AM trees. Our findings suggest that mycorrhizal dominance influences tree diversity and richness–biomass relationship in forest ecosystems.
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