Liu Jingyu, Liao Huixuan, Fan Minghua, Zhou Ting, Peng Shaolin
State Key Laboratory of Biocontrol, School of Life Sciences Sun Yat-sen University Guangzhou China.
Ecol Evol. 2023 Jun 6;13(6):e10153. doi: 10.1002/ece3.10153. eCollection 2023 Jun.
Moso-bamboo (), with the favor of human disturbance, rapidly invades adjacent forests to form monocultures in East Asia. Moso-bamboo not only intrudes the broadleaf forests but also the coniferous, and it could impact by above- and below-ground pathways. However, it still remains unclear whether the below-ground performance of moso-bamboo differs from broadleaf to coniferous forests, especially those differing in competitive and nutrient acquisition strategies. In this study, we investigated three types of forest stands in Guangdong, China, including a bamboo monoculture, a coniferous forest, and a broadleaf forest. We found that moso-bamboo may suffer stronger soil P limitation (soil N/P = 18.16) and may be infected by more AMF in coniferous than broadleaf forests (soil N/P = 16.17). Based on our PLS-path model analysis, soil P resource may be the key to differ moso-bamboo root morphology and rhizosphere microbe in different forests: in broadleaf forests with weaker soil P limitation, may be realized through increasing specific root length and specific surface area, whereas in coniferous forests with stronger soil, P limitation may be realized through combining more AMF. Our study highlights the importance of underground mechanisms about moso-bamboo expansion in different forest communities.
毛竹（）在人类干扰的影响下，迅速侵入东亚邻近的森林，形成单一栽培林。毛竹不仅侵入阔叶林，还侵入针叶林，并且它可以通过地上和地下途径产生影响。然而，毛竹在地下的表现从阔叶林到针叶林是否存在差异，尤其是在竞争和养分获取策略方面存在差异，目前仍不清楚。在本研究中，我们调查了中国广东的三种林分类型，包括毛竹纯林、针叶林和阔叶林。我们发现，毛竹在针叶林中可能比在阔叶林中遭受更强的土壤磷限制（土壤氮/磷 = 18.16），并且可能感染更多的丛枝菌根真菌（AMF）（土壤氮/磷 = 16.17）。基于我们的偏最小二乘路径模型分析，土壤磷资源可能是不同森林中毛竹根系形态和根际微生物存在差异的关键：在土壤磷限制较弱的阔叶林中，可能通过增加比根长和比表面积来实现，而在土壤磷限制较强的针叶林中，可能通过结合更多的丛枝菌根真菌来实现。我们的研究强调了地下机制在毛竹在不同森林群落中扩张的重要性。
