Li Teng, Lu Leilei, Kang Ziqing, Li Huijun, Wu Jihua, Du Weiguo
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.
Department of Obstetrics and Gynecology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
Front Microbiol. 2024 Dec 11;15:1494681. doi: 10.3389/fmicb.2024.1494681. eCollection 2024.
The rapid expansion of solar photovoltaic (PV) power generation raises concerns regarding its impact on terrestrial ecosystems. Although the influence of PV panels on soil conditions and plant biomass is acknowledged, their effects on the assembly processes and co-occurrence networks of soil microbial communities remain understudied. Clarifying this influence is crucial for understanding the effects of photovoltaic panels on soil ecosystem functions. In this study, we first explored the effects of PV panels on soil properties. Then, using amplicon sequencing, we analyzed the impact of PV panels on soil microbial diversity and function, focusing specifically on the assembly processes and co-occurrence networks of bacterial and fungal communities. Our results indicate that the installation of PV panels improved soil conditions, leading to concurrent effects on microbial community structure and function. This process appears to be deterministic, driven primarily by homogeneous selection. Notably, PV panels increased the complexity of bacterial networks while decreasing their stability. In contrast, PV panels did not affect the complexity of fungal networks despite their stability increased. These findings provide new evidence that soil bacterial networks are more sensitive to PV panels installation than fungal networks, deepening our understanding of land-use change effects on soil ecosystem functions. Moreover, our study demonstrates that higher complexity does not necessarily mean higher stability at least in soil microbial systems, challenging the notion that ecological complexity favors their stability.
太阳能光伏发电的迅速扩张引发了人们对其对陆地生态系统影响的担忧。尽管光伏板对土壤条件和植物生物量的影响已得到认可，但其对土壤微生物群落组装过程和共生网络的影响仍未得到充分研究。阐明这种影响对于理解光伏板对土壤生态系统功能的作用至关重要。在本研究中，我们首先探究了光伏板对土壤性质的影响。然后，利用扩增子测序，我们分析了光伏板对土壤微生物多样性和功能的影响，特别关注细菌和真菌群落的组装过程和共生网络。我们的结果表明，光伏板的安装改善了土壤条件，同时对微生物群落结构和功能产生了影响。这个过程似乎是确定性的，主要由同质选择驱动。值得注意的是，光伏板增加了细菌网络的复杂性，同时降低了其稳定性。相比之下，光伏板虽提高了真菌网络的稳定性，但并未影响其复杂性。这些发现提供了新的证据，表明土壤细菌网络比真菌网络对光伏板安装更敏感，加深了我们对土地利用变化对土壤生态系统功能影响的理解。此外，我们的研究表明，至少在土壤微生物系统中，更高的复杂性并不一定意味着更高的稳定性，这对生态复杂性有利于其稳定性的观点提出了挑战。
