Effects of moso bamboo (Phyllostachys edulis) expansion on soil microbial community in evergreen broad-leaved forest

doi:10.13287/j.1001-9332.202204.030

Abstract

Abstract: The special eco-physiological characteristics of moso bamboo (Phyllostachys edulis) facilitate their fast invasion in nature ecosystems. The widespread expansion of moso bamboo causes degradation of adjacent forest ecosystem and change of landscape, as well as soil properties and microbial community composition. However, how moso bamboo expansion affects soil microbial composition is far from fully understood. Herein, we selected four moso bamboo expansion transects with three forest types at the Anji Lingfeng temple forest farm, Zhejiang Province, including evergreen broadleaved forest (BLF), mixed P. edulis and broadleaved forest (MEF) and P. edulis forest (PEF). We examined the effects of moso bamboo expansion on soil properties and soil microbial phospholipid fatty acids (PLFAs). Our results showed that soil pH was higher in moso bamboo forest than in MEF and BLF by 0.37 and 0.32 unit. In contrast, soil organic carbon, ammonium, and nitrate contents significantly decreased. Biomass of soil microbial groups displayed a decreasing trend except arbuscular mycorrhizal fungi, and the microbial richness index (SR) and diversity index (H) decreased significantly. In summary, moso bamboo expansion affected soil nutrient and carbon inputs, which was an important factor affecting soil microbial community structure. Results of redundancy analysis showed that changes of soil organic carbon and ammonium content were the main factors driving soil microbial community.

Key words: moso bamboo expansion, phospholipid fatty acids, soil microbial community, microbial diversity

MA Xin-ru, ZHENG Xu-li, ZHENG Chun-ying, HU Yu-ting, QIN Hua, CHEN Jun-hui, XU Qiu-fang, LIANG Chen-fei. Effects of moso bamboo (Phyllostachys edulis) expansion on soil microbial community in evergreen broad-leaved forest[J]. Chinese Journal of Applied Ecology, 2022, 33(4): 1091-1098.

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