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Soil organic carbon dynamics following natural vegetation restoration: Evidence from stable carbon isotopes (delta C-13)
Deng, Lei1,2; Wang, Kaibo2; Tang, Zhuangsheng1; Shangguan, Zhouping1
2016-04-01
发表期刊AGRICULTURE ECOSYSTEMS & ENVIRONMENT
卷号221期号:2016页码:235-244
文章类型Article
摘要Knowledge of soil carbon (C) dynamics following vegetation restoration is essential for evaluating carbon budgets and cycles at regional and global scales. In this study, we investigated the dynamics of soil organic carbon (OC) following farmland abandonment along with similar to 160 years of vegetation restoration on the Loess Plateau, China. Our specific objectives were to examine the variation of soil OC decomposition rates, to quantify the changes in the proportion of new and old soil OC, and to explore the factors controlling soil OC stock patterns. The results showed that the rate of new soil OC increase was higher in the early stage (similar to 10 years) after land-use change. The rate of new soil OC increase ranged from 109.17 to 41.88 g m(-2) year(-1) in the early (similar to 10 years) and later stages (similar to 160 years), respectively. It took about 30 years for the amount of new soil OC to reach the same level as old OC in the top 20 cm of soil following farmland abandonment. Also, soil OC decomposition rate was higher (decomposition rate constants = 0.04) in the early stage (similar to 10 years) and showed a non-significant difference after >30 years of vegetation restoration. Our results suggested that soil C/N is the most factor to effect on soil OC sequestration following vegetation restoration, and the proportions of new soil OC was mainly determined by fine roots, soil OC decomposition rate constants were mainly determined by soil silt content, and the rates of new soil OC increase were mainly determined by soil sand content that these observations were made out of considering many other soil properties. (C) 2016 Elsevier B.V. All rights reserved.
关键词Carbon Sequestration Carbon Isotopes Farmland Abandonment New Carbon Old Carbon Organic Carbon Decomposition The Loess Plateau
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.agee.2016.01.048
关键词[WOS]LAND-USE CHANGE ; LOESS PLATEAU ; MICROBIAL BIOMASS ; MATTER DYNAMICS ; AGGREGATE FRACTIONS ; NORTHWEST CHINA ; CLIMATE-CHANGE ; NITROGEN ; FOREST ; SEQUESTRATION
收录类别SCI
语种英语
WOS研究方向Agriculture ; Environmental Sciences & Ecology
WOS类目Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS记录号WOS:000373649100025
引用统计
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5752
专题生态环境研究室
作者单位1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
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GB/T 7714
Deng, Lei,Wang, Kaibo,Tang, Zhuangsheng,et al. Soil organic carbon dynamics following natural vegetation restoration: Evidence from stable carbon isotopes (delta C-13)[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2016,221(2016):235-244.
APA Deng, Lei,Wang, Kaibo,Tang, Zhuangsheng,&Shangguan, Zhouping.(2016).Soil organic carbon dynamics following natural vegetation restoration: Evidence from stable carbon isotopes (delta C-13).AGRICULTURE ECOSYSTEMS & ENVIRONMENT,221(2016),235-244.
MLA Deng, Lei,et al."Soil organic carbon dynamics following natural vegetation restoration: Evidence from stable carbon isotopes (delta C-13)".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 221.2016(2016):235-244.
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