Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15110 |
Depth‐dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s | |
Qiquan Li; Aiwen Li; Tianfei Dai; Zemeng Fan; Youlin Luo; Shan Li; Dagang Yuan; Bin Zhao; Qi Tao; Changquan Wang; Bing Li; Xuesong Gao; Yiding Li; Huanxiu Li; John P. Wilson | |
2020-04-27 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Agricultural soils have tremendous potential to sequester soil organic carbon (SOC) and mitigate global climate change. However, agricultural land use has a profound impact on SOC dynamics, and few studies have explored how agricultural land use combined with soil conditions affect SOC changes throughout the soil profile. Based on a paired soil resampling campaign in the 1980s and 2010s, this study investigated the SOC changes of the soil profile caused by agricultural land use and the correlations with parent material and topography across the Chengdu Plain of China. The results showed that the SOC content increased by 3.78 g C/kg in the topsoil (0–20 cm), but decreased in the 20–40 cm and 40–60 cm soil layers by 0.90 and 1.26 g C/kg respectively. SOC increases in topsoil were observed for all types of agricultural land. Afforestation on former agricultural land also caused SOC decreases in the 20–60 cm soil layers, while SOC decreases only occurred in the 40–60 cm soil layer for agricultural land using a traditional crop rotation (i.e. traditional rice–wheat/rapeseed rotation) and with rice–vegetable rotations converted from the traditional rotations. For each agricultural land use, SOC decreases in deep soils only occurred in high relief areas and in soils formed from Q4 (Quaternary Holocene) grey‐brown alluvium and Q4 grey alluvium that had a relatively low soil bulk density and clay content. The results indicated that SOC change caused by agricultural land use was depth dependent and that the effects of agricultural land use on soil profile SOC dynamics varied with soil characteristics and topography. Subsoil SOC decreases were more likely to occur in high relief areas and in soils with low soil bulk density and low clay content. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/248923 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Qiquan Li,Aiwen Li,Tianfei Dai,等. Depth‐dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s[J]. Global Change Biology,2020. |
APA | Qiquan Li.,Aiwen Li.,Tianfei Dai.,Zemeng Fan.,Youlin Luo.,...&John P. Wilson.(2020).Depth‐dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s.Global Change Biology. |
MLA | Qiquan Li,et al."Depth‐dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s".Global Change Biology (2020). |
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