Soil Microbial Activity During Secondary Vegetation Succession in Semiarid Abandoned Lands of Loess Plateau
文献类型： 外文期刊
作者： Jiang Jin-Ping 1 ; Xiong You-Cai 1 ; Jiang Hong-Mei 2 ; Ye De-You 3 ; Song Ya-Jie 5 ; Li Feng-Min 1 ;
作者机构： 1.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Educ Minist China, Sch Life Sci, Lanzhou 730000, Peoples R China
2.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Educ Minist China, Sch Resources & Environm Sci, Lanzhou 730000, Peoples R China
3.Gansu Acad Agr Sci, Lanzhou 730070, Peoples R China
4.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China
5.Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA
关键词： soil property;enzyme activity;ecosystem restoration;soil depth;microbial biomass;soil microbial activity;soil basal respiration;local climate condition;secondary vegetation succession;semiarid abandoned land;vegetation succession interaction;soil organic carbon ratio
期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）
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收录情况： SCI
摘要： To show the vegetation succession interaction with soil properties, microbial biomass, basal respiration, and enzyme activities in different soil layers (0-60 cm) were determined in six lands, i.e., 2-, 7-, 11-, 20-, and 43-year-old abandoned lands and one native grassland, in a semiarid hilly area of the Loess Plateau. The results indicated that the successional time and soil depths affected soil microbiological parameters significantly. In 20-cm soil layer, microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), MBC/MBN, MBC to soil organic carbon ratio (MBC/SOC), and soil basal respiration tended to increase with successional stages but decrease with soil depths. In contrast, metabolic quotient (qCO(2)) tended to decrease with successional stages but increase with soil depths. In addition, the activities of urease, catalase, neutral phosphatase, beta-fructofuranosidase, and carboxymethyl cellulose (CMC) enzyme increased with successional stages and soil depths. They were significantly positively correlated with microbial biomass and SOC (P < 0.5), whereas no obvious trend was observed for the polyphenoloxidase activity. The results indicated that natural vegetation succession could improve soil quality and promote ecosystem restoration, but it needed a long time under local climate conditions.
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