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      Changes in Soil Microbial Community and Its Effect on Carbon Sequestration Following Afforestation on the Loess Plateau, China

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          Abstract

          Afforestation plays an important role in soil protection and ecological restoration. The objective of this study is to understand the effect of afforestation on soil carbon and soil microbial communities in the Loess Plateau of China. We measured two chemically-separated carbon fractions (i.e., humic acid, HA, and fulvic acid, FA) and soil microbial communities within shrublands (18-year-old Caragana korshinskii Kom (shrubland I) and 28-year-old Caragana korshinskii Kom (shrubland II)) and cropland. The size and structure of the soil microbial community was measured by phospholipid fatty acid (PLFA) analysis. The analysis of C-fractions indicated that at a depth of 0–20 cm, FA-C concentration in shrubland I and shrubland II were 1.7 times that of cropland, while HA-C had similar values across all three sites. Total PLFAs, G + (Gram positive) bacterial, G (Gram negative) bacterial, and actinobacterial PLFAs were highest in shrubland II, followed by shrubland I and finally cropland. Fungal PLFAs were significantly higher in shrubland II compared to the other sites. Additionally, we found a high degree of synergy between main microbial groups (apart from fungi) with FA-C. We concluded that planting C. korshinskii in abandoned cropland could alter the size and structure of soil microbial community, with these changes being closely related to carbon sequestration and humus formation.

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          Most cited references24

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          Impacts of Carbon and Flooding on Soil Microbial Communities: Phospholipid Fatty Acid Profiles and Substrate Utilization Patterns

          Bossio, Scow (1998)
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            Relationship of soil organic matter dynamics to physical protection and tillage

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              Mechanisms controlling soil carbon turnover and their potential application for enhancing carbon sequestration

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                Author and article information

                Journal
                Int J Environ Res Public Health
                Int J Environ Res Public Health
                ijerph
                International Journal of Environmental Research and Public Health
                MDPI
                1661-7827
                1660-4601
                22 August 2017
                August 2017
                : 14
                : 8
                Affiliations
                [1 ]College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China; xy020824@ 123456163.com (Y.X.); ymhuang1971@ 123456nwsuaf.edu.cn (Y.H.)
                [2 ]Shanxi Research Academy of Environment Sciences, Taiyuan 030000, China
                [3 ]State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; chengman1988@ 123456126.com
                [4 ]Institute of Agricultural Environment and Resource, Shanxi Academy of Agricultural Sciences, Taiyuan 030000, China
                [5 ]French National Institute for Agricultural Research (INRA), UR 0272, UR Science du sol, Centre de recherche d’Orléans, CS 40001, Cedex 2, F-45075 Orléans, France; Frederic.Darboux@ 123456orleans.inra.fr
                Author notes
                [* ]Correspondence: shan@ 123456ms.iswc.ac.cn ; Tel.: +86-135-7241-0088
                [†]

                These authors contributed equally to this work.

                Article
                ijerph-14-00948
                10.3390/ijerph14080948
                5580650
                28829374
                ec150d63-36d7-49cc-869c-5d68e1d100e2
                © 2017 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                Categories
                Article

                Public health
                land-use change,c. korshinskii,carbon fraction,soil microbial community
                Public health
                land-use change, c. korshinskii, carbon fraction, soil microbial community

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