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Pool Sizes and Turnover of Soil Organic Carbon of Farmland Soil in Karst Area of Guilin |
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| Authors: | YANG Hui CAO Jianhua ZHANG Liankai HOU Yanlin MAO Lifeng Graduate University of Chinese Academy of Sciences Beijing China Institute of Karst Geology of CAGS Guilin Guangxi China Environmental Management College of China Qinhuangdao Hebei China International Culture College of Capital Normal University Beijing China |
| Affiliation: | YANG Hui1,2,CAO Jianhua2,ZHANG Liankai3,HOU Yanlin1,and MAO Lifeng4 1 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 2 Institute of Karst Geology of CAGS,Guilin 541004,Guangxi,China 3 Environmental Management College of China,Qinhuangdao 066004,Hebei,China 4 International Culture College of Capital Normal University,Beijing 100089,China |
| Abstract: | The three-pool and first-order model separates the mineralizable organic carbon into active,slow,and passive carbon pools.This paper used the model and decomposition curves of the soil organic carbon to fit the active pool and its decomposition rate,slow pool and its decomposition rate.The results showed that the size of the active pool from different profiles accounted for 2.09%-3.08% of the total soil organic carbon and the mean residue time was 3.57-17.21 days.And the size of the slow pool accounted for ... |
| Keywords: | karst area farmland soil organic carbon pool turnover time |
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