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- Title
Bamboo forest expansion increases soil organic carbon through its effect on soil arbuscular mycorrhizal fungal community and abundance.
- Authors
Qin, Hua; Niu, Limin; Wu, Qifeng; Chen, Junhui; Li, Yongchun; Liang, Chenfei; Xu, Qiufang; Fuhrmann, Jeffry; Shen, Ying
- Abstract
Aims: Moso bamboo ( Phyllostachys pubescens) is a fast-growing species that can invade neighboring forests through its vigorous rhizome system, leading to large shifts of plant diversity and soil properties. A primary concern is the response of arbuscular mycorrhizal fungal (AMF) communities and related soil C sequestration to bamboo forest expansion. Methods: We used a long-term soil chronosequence from primary broadleaved forest to moso bamboo forest to examine the changes in AMF abundance and communities, as well as their role in soil C storage. Results: AMF communities showed strong niche differentiation, and were highly structured by forest type ( r = 0.648, P = 0.001), and marginally correlated to soil pH and organic C. Bamboo forest expansion increased soil AMF biomass as indicated by neutral lipid fatty acids (NLFA) 16:1ω5 abundance, easily extracted glomalin-related soil protein (EE-GRSP), and water-stable macroaggregates. We observed that soil AMF biomass contributed substantially to both soil macroaggregates and EE-GRSP, which were tightly correlated with soil organic C. The influence of bamboo forest expansion on soil C sequestration was mainly due to its indirect effect on AMF biomass. Conclusions: Bamboo forest expansion significantly changed soil AMF communities and increased AMF biomass, which in turn contributed to enhanced soil aggregation and C storage.
- Subjects
PHYLLOSTACHYS pubescens; INVASIVE plants; PLANT diversity; VESICULAR-arbuscular mycorrhizas; CARBON sequestration in forests; BAMBOO; BIOMASS
- Publication
Plant & Soil, 2017, Vol 420, Issue 1/2, p407
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1007/s11104-017-3415-6