Dynamics of soil microbial communities following vegetation succession in a karst mountain ecosystem, Southwest China

被引:62
|
作者
Zhao, Chang [1 ]
Long, Jian [1 ]
Liao, Hongkai [2 ,3 ]
Zheng, Chunli [4 ]
Li, Juan [1 ]
Liu, Lingfei [1 ]
Zhang, Mingjiang [1 ]
机构
[1] Guizhou Normal Univ, Guizhou Key Lab Mt Environm, Guiyang 550001, Guizhou, Peoples R China
[2] Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Guizhou Normal Univ, Dept Geog & Environm Sci, Guiyang 550001, Guizhou, Peoples R China
基金
中国国家自然科学基金;
关键词
ARBUSCULAR MYCORRHIZAL FUNGI; SEMIARID LOESS PLATEAU; ORGANIC-CARBON; FUNCTIONAL DIVERSITY; ENZYME-ACTIVITIES; PLANT COMMUNITY; FATTY-ACIDS; BACTERIAL; NITROGEN; BIOMASS;
D O I
10.1038/s41598-018-36886-z
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The interaction between soil property and soil microbial community in karst area still remains an open question. The characteristics of soil physicochemical properties and microbial community structure and their relationship under five vegetation succession stages (grassland, shrub land, secondary forest, plantation forest, and natural forest) at two soil depths (0-10cm and 10-20 cm) were explored in a karst mountain ecosystem. We found that soil moisture content (SMC) and pH increased with soil depth across vegetation succession. The highest content of soil nutrients was found in the natural forest stage at both soil depths. The total PLFAs, the abundance of Gram-positive (GP) bacteria, actinomycetes (ACT), fungi, and arbuscular mycorrhizal fungi (AMF) were significantly (P < 0.05) related to variations with soil total carbon (TC) and total nitrogen (TN). Furthermore, the distribution of soil microbial community distinctly differed in vegetation succession both at two soil layers which was demonstrated by Principal-coordinates analysis. Redundancy analyses patterns indicated that soil TC and TN were positively related to cy19:0 and 10Me 16:0, but an opposite relationship with a15:0. Changes of soil microbial communities were significantly determined by vegetation succession, and soil microbial community structure can be a sensitive indicator to reflect the stabilization of karst mountain ecosystem, southwest of China.
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页数:10
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