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Effects of regenerating vegetation on soil enzyme activity and microbial structure in reclaimed soils on a surface coal mine site

机译：植被更新对露天煤矿复垦土壤中土壤酶活性和微生物结构的影响

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摘要

The aim of this study was to evaluate the influence of reclaimed scenarios on soil enzyme activities and microbial community in a reclaimed surface coal mine on the Northwest Loess Plateau of China. Soil samples were collected from a bare land (CK), and a plantation (PL) and four mixed forests (MF1-4). Soil physicochemical characteristics, four enzyme activities and microbial abundance and T-RFLP (terminal restriction fragment length polymorphism) profiles were measured. Effects of reclaimed scenarios on soil nutrients content, enzyme activities and microbial community were pronounced. Soil organic carbon could be well used to predict the major differences in enzyme activities, and microbial abundance and composition. Soil enzyme activities were more significantly correlated with fungal abundance than bacterial and archaeal ones. The higher soil nutrient content, enzyme activities, and microbial abundance and diversity were from mixed forests and the lowest ones were from CK, which suggested mixed forests would be feasible scenarios in semi-arid Loess Plateau. Soil bacteria, archaea and fungi evolved with reclaimed process, but the influences of reclaimed scenarios on each domain of microbial abundance, diversity and composition were different. These findings suggested that soil bacteria, archaea and fungi play different ecological roles during restoration process. (C) 2014 Elsevier B.V. All rights reserved.
机译：这项研究的目的是评估开垦情景对中国​​西北黄土高原开垦表层煤矿土壤酶活性和微生物群落的影响。从一个裸地（CK），一个人工林（PL）和四个混交林（MF1-4）收集土壤样品。测量土壤理化特性，四种酶活性以及微生物丰度和T-RFLP（末端限制性片段长度多态性）图谱。回收情景对土壤养分含量，酶活性和微生物群落的影响是明显的。土壤有机碳可以很好地用于预测酶活性，微生物丰度和组成方面的主要差异。与细菌和古细菌相比，土壤酶活性与真菌丰度的相关性更高。黄土高原半干旱地区较高的土壤养分含量，酶活性，微生物丰度和多样性来自混交林，最低的是CK。土壤细菌，古细菌和真菌随着再生过程而进化，但是再生情景对微生物丰度，多样性和组成各域的影响是不同的。这些发现表明，土壤细菌，古细菌和真菌在恢复过程中起着不同的生态作用。 （C）2014 Elsevier B.V.保留所有权利。

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