Response of arbuscular mycorrhizal fungal community in soil and roots to grazing differs in a wetland on the Qinghai-Tibet plateau
Response of arbuscular mycorrhizal fungal community in soil and roots to grazing differs in a wetland on the Qinghai-Tibet plateau
复制标题
青藏高原湿地土壤和根系丛枝菌根真菌群落对放牧的响应存在差异
DOI：
10.7717/pearj.9375
复制
发表时间：
2020-06-19
期刊：
影响因子：
2.7
通讯作者：
Guo, Liang-Dong
中科院分区：
文献类型：
--
作者：
Li, Zhong-Feng;Lu, Peng-Peng;Guo, Liang-Dong
放牧是影响生态系统中丛枝菌根（AM）真菌丰度、多样性和群落组成的重要干扰因素之一，但AM真菌对放牧的响应研究较少。对青藏高原若尔盖湿地放牧和非放牧样地根系和土壤中的AM真菌进行了研究。放牧显著增加了AM真菌孢子密度和球囊霉素相关的土壤蛋白质，但对AM真菌的额外自由基菌丝密度没有显著影响。而AM真菌丰富度和社区组成不同的根和土壤之间，放牧被发现只影响土壤中的社区组成。研究表明，适度放牧可以提高湿地生态系统AM真菌的生物量和土壤固碳能力，维持湿地生态系统AM真菌的多样性。这一发现有助于我们进一步了解AM真菌对青藏高原湿地放牧的响应。
Grazing as one of the most important disturbances affects the abundance, diversity and community composition of arbuscular mycorrhizal (AM) fungi in ecosystems, but the AM fungi in response to grazing in wetland ecosystems remain poorly documented. Here, we examined AM fungi in roots and soil in grazing and non-grazing plots in Zoige wetland on the Qinghai-Tibet plateau. Grazing significantly increased AM fungal spore density and glomalin-related soil proteins, but had no significant effect on the extra radical hyphal density of AM fungi. While AM fungal richness and community composition differed between roots and soil, grazing was found to influence only the community composition in soil. This study shows that moderate grazing can increase the biomass of AM fungi and soil carbon sequestration, and maintain the AM fungal diversity in the wetland ecosystem. This finding may enhance our understanding of the AM fungi in response to grazing in the wetland on the Qinghai-Tibet plateau.