Community size, activity and C:N stoichiometry of soil microorganisms following reforestation in a Karst region

doi:10.1016/j.ejsobi.2016.01.007

	Community size, activity and C:N stoichiometry of soil microorganisms following reforestation in a Karst region
	Li, Guichun 4; Jiang, Yong 5; Hu, Ning 1; Lou, Yilai 4; Hu, Xiaomin 1; Li, Hui 2; Tang, Zheng 3; Li, Zhongfang 3
刊名	EUROPEAN JOURNAL OF SOIL BIOLOGY
	2016-03-01
卷号	73 页码:77-83
关键词	Microbial Biomass Soil Respiration Metabolic Quotient Ecological Stoichiometry Vegetation Restoration Karst
ISSN号	1164-5563
DOI	10.1016/j.ejsobi.2016.01.007
英文摘要	Reforestation has been widely adopted to restore soil fertility and ecosystem service in the rocky-desertifled Karst region of southwestern China. As a key indicator of ecosystem restoration, soil microbial characteristics however remained poorly understood following reforestation on the degraded Karst soils. This study employed site comparisons along a chronosequence of Toona sinensis reforestation in soil microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), basal respiration (BR), microbial metabolic quotient (qCO(2)), microbial quotient (MBC:TOC), and microbial C:N stoichiometry. Results showed that MBC, MBN, BR as well as soil organic C and N contents, moisture and porosity increased with the reforestation age. The 0-yr control of bare soil showed the highest microbial metabolic quotient (qCO(2), 2.48 mg g(-1) h(-1)) and lowest microbial quotient (MBC:TOC, 2.29%), reflecting the disturbed and stressed habitats. After 12-yr reforestation, qCO(2) decreased to 1.49 mg g(-1) h(-1) and MBC:TOC increased to 4.70%, due to the disturbance cessation and the weakened stress. The consistent increases in microbial C:N ratio and soil C:N ratio under the reforestation indicated microbial adaptive response to substrate resource stoichiometry. This study suggested that these microbial indices independently or in combination can be used as the early indicators of the restoration of Karst ecosystems. (C) 2016 Elsevier Masson SAS. All rights reserved.
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
WOS记录号	WOS:000373549800009
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122580]
专题	中国科学院沈阳应用生态研究所
通讯作者	Hu, Xiaomin; Tang, Zheng
作者单位	1.Northeastern Univ, Coll Resources & Civil Engn, Shenyang 110819, Peoples R China 2.Henan Agr Univ, Coll Resources & Environm Sci, Zhengzhou 450002, Peoples R China 3.Hezhou Univ, Coll Chem & Bioengn, Hezhou 542899, Peoples R China 4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 5.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Guichun,Jiang, Yong,Hu, Ning,et al. Community size, activity and C:N stoichiometry of soil microorganisms following reforestation in a Karst region[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2016,73:77-83.
APA	Li, Guichun.,Jiang, Yong.,Hu, Ning.,Lou, Yilai.,Hu, Xiaomin.,...&Li, Zhongfang.(2016).Community size, activity and C:N stoichiometry of soil microorganisms following reforestation in a Karst region.EUROPEAN JOURNAL OF SOIL BIOLOGY,73,77-83.
MLA	Li, Guichun,et al."Community size, activity and C:N stoichiometry of soil microorganisms following reforestation in a Karst region".EUROPEAN JOURNAL OF SOIL BIOLOGY 73(2016):77-83.