首页|Seasonal variation in soil microbial biomass carbon and nitrogen in an artificial sand-binding vegetation area in Shapotou, northern China

Seasonal variation in soil microbial biomass carbon and nitrogen in an artificial sand-binding vegetation area in Shapotou, northern China

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In this study, seasonal variation characteristics of surface soil microbial biomass carbon (MBC) and soil microbial biomass nitrogen (MBN) of an artificial vegetation area located in Shapotou for different time periods were studied using the chloroform fumigation method, and the results were compared with those of near-natural vegetation areas and mobile dunes. Results showed that the MBC and MBN levels in the 0-5 cm soil layer were higher in autumn than in summer and spring. As the prolongation of vegetation restoration raised the MBC and MBN levels in summer and autumn, no clear variation was found in spring. However, the MBC and MBN in 5-20 cm had no obvious seasonal variation. During summer and autumn, the variation trend of MBC and MBN in the vertical direction was shown to be 0-5>5-10>10-20 cm in the vegetation area, while for mobile dunes, the MBC and MBN levels increased as the depth increased. The natural vegetation area was shown to possess the highest MBC and MBN levels, and yet mobile dunes have the lowest MBC and MBN levels. MBC and MBN levels in artificial sand-binding vegetation increased with the prolongation of vegetation restoration, indicating that the succession of sand-binding vegetation will result in the ac-cumulation of soil carbon and nitrogen, as well as the restoration of soil fertility.

re-vegetation areasoil microbial biomass carbonsoil microbial biomass nitrogen

YuYan Zhou、XuanMing Zhang、XiaoHong Jia、JinQin Ma、YanHong Gao

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Gansu Productivity Promotion Center, Lanzhou, Gansu 730000, China

Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China

Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environment and Engineering Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China

This work was supported by the Chinese National Natu-ral Scientific FoundationThis work was supported by the Chinese National Natu-ral Scientific FoundationThis work was supported by the Chinese National Natu-ral Scientific Foundationauthors would like to thank Dr. LiChao Liu who assisted with field work involved in the study

411710774080100240971031

2013

10.3724/SP.J.1226.2013.00733

寒旱区科学(英文版)
中国科学院寒区旱区环境与工程研究所,科学出版社有限责任公司

寒旱区科学(英文版)

CSCD
影响因子：0.237
ISSN：1674-3822
年,卷(期)：2013.(6)
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