Dynamics of soil organic carbon and nitrogen following agricultural abandonment in a karst region

Agricultural abandonment is regarded as a major driver of soil organic carbon (C) dynamics, but the mechanisms underlying the direction and magnitude of soil C dynamics following agricultural abandonment are poorly understood. Here dynamics of soil C and N contents during postagricultural succession...

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Bibliographic Details
Published in:Journal of geophysical research. Biogeosciences 2017-01, Vol.122 (1), p.230-242
Main Authors: Li, Dejun, Wen, Li, Yang, Liqiong, Luo, Pan, Xiao, Kongcao, Chen, Hao, Zhang, Wei, He, Xunyang, Chen, Hongsong, Wang, Kelin
Format: Article
Language:English
Subjects:
Abandonment
agricultural abandonment
Agricultural land
Aquifers
Biochemistry
Calcium
Dissolution
Dissolving
Dolomite
Dolostone
Dynamics
Ecological succession
exchangeable calcium
Forests
Grasslands
Karst
karst region
Limestone
Lithology
Manures
Nitrogen
Organic carbon
Organic soils
Recovering
Soil
Soil dynamics
Soil investigations
soil organic carbon
soil total nitrogen
Soils
Tillage
Variance analysis
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Summary:Agricultural abandonment is regarded as a major driver of soil organic carbon (C) dynamics, but the mechanisms underlying the direction and magnitude of soil C dynamics following agricultural abandonment are poorly understood. Here dynamics of soil C and N contents during postagricultural succession were investigated in areas underlain by dolomite or limestone by using a space‐for‐time substitution approach in a karst region, southwest China. One hundred twenty‐five sites from cropland, grassland, shrubland, and secondary forest were selected to represent different succession stages. Overall, soil C and N contents were greater (P 
ISSN:2169-8953
2169-8961
DOI:10.1002/2016JG003683