文献类型：期刊文献

英文题名：Effects of plant restoration on soil microbial biomass in an arid desert in northern China

作者：Jia, Xiao-hong[1,2] Li, Yuan-shou[3] Wu, Bo[1] Zhou, Yu-yan[2] Li, Xin-rong[2]

第一作者：Jia, Xiao-hong

通信作者：Li, YS[1]

机构：[1]Chinese Acad Forestry, Inst Desert Studies, Beijing 100091, Peoples R China;[2]Chinese Acad Sci, Shapotou Desert Res & Expt State Key Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China;[3]Chinese Acad Meteorol Sci, PO 46,Zhongguancun South St, Beijing 100081, Peoples R China

年份：2017

卷号：144

起止页码：192-200

外文期刊名：JOURNAL OF ARID ENVIRONMENTS

收录：;Scopus(收录号：2-s2.0-85018422962);WOS:【SCI-EXPANDED(收录号:WOS:000403999100018)】；

基金：We thank three anonymous referees for their insightful comments on the manuscript. This study was financially supported by the fundamental Research Funds for the Central Non-profit Research Institution of CAF (YBB2016ZD010) and the Chinese National Natural Science Foundation (Grant No. 41471096, 41371093, 41171077).

语种：英文

外文关键词：Plant restoration; Arid desert; Microbial biomass carbon; Microbial biomass nitrogen

摘要：Soil microbial biomass acts as both a source and sink of organic carbon and available nutrients, consequently affecting plant growth and production. However, our understanding regarding the effects of plant restoration practices on the patterns of soil microbial biomass remains limited. In this study, we established a 54-year chronosequence comprising moving sand dunes and adjacent sites that had been stabilized through different periods (10, 20, 29, 46, and 54 years) of plant restoration in the southeastern fringe of the Tengger Desert, China. Microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), and their relationship with soil physicochemical properties were analyzed. The results showed that plant restoration significantly increased MBC and MBN in the arid desert. In all stabilized sites, MBC and MBN decreased with increasing soil depth, while they increased along the chronosequence with decreasing plant cover and successional biological soil crusts. MBC and MBN in moving dunes remained lower than those in stabilized sites and slightly increased from topsoil to subsoil. Both MBC and MBN were positively correlated with silt and clay contents, soil organic carbon (SOC), total nitrogen (TN), and MBC/SOC and MBN/TN ratios, whereas they were negatively correlated with sand content. Higher MBC and MBC/SOC were found in the later successional stages, suggesting a great potential for carbon sequestration and higher nutrient turnover for stand biomass. This study indicated that plant restoration plays an important part in the recovery of the biological functioning of soil in an arid desert. (C) 2017 Elsevier Ltd. All rights reserved.