Dynamics and fractions of soil organic carbon in response to 35 years of afforestation in subtropical China
文献类型：期刊论文
| 作者 | Yang, Lu3; Song, Xianwei3; Lyu, Sidan2; Shen, Weijun3; Gao, Yang1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2024-02-14 |
| 页码 | 14 |
| ISSN号 | 0032-079X |
| 关键词 | Forest type Soil organic carbon Particulate organic carbon Mineral-associated organic carbon |
| DOI | 10.1007/s11104-024-06493-1 |
| 通讯作者 | Song, Xianwei(swxkerry@163.com) |
| 英文摘要 | Background and aims The accumulation of soil organic carbon (SOC) is a crucial process in mitigating climate change and ensuring soil quality. Subtropical plantations in China have shown high potential for enhancing SOC sequestration due to their high carbon sink capacity. However, the dynamics and compositions of SOC after long term afforestation are still poorly understood. Methods We examined the dynamics of SOC and its fractions of different soil layers (0-5 cm, 5-10 cm, 10-20 cm, 20-40 cm, 40-80 cm, 80-100 cm) in a mixed broadleaf-conifer plantation (BCP), a Masson pine plantation (MP), and a Slash pine plantation (SP), and an enclosed forest (EF) in subtropical China. Both physical fractions (particulate organic carbon (POC), soil clay organic carbon (SOCclay), soil silt organic carbon (SOCsilt)) and chemical fractions (iron-aluminum-bound organic carbon (Fe/Al-OC), and calcium-bound organic carbon (Ca-OC)) were determined. Additionally, soil physicochemical properties were further analyzed. Results Our results showed the SOC storage in the EF, BCP, MP, and SP in 2019 increased by 82%, 238%, 126%, and 103% respectively compared to 1984. The proportions of MAOC to SOC were respectively as follows: SP (65.9%) > BCP (64.9%) > EF (61.6%) > MP (53.9%). The mean proportions of SOC(clay )to MAOC were as follows: BCP (71.1%) > EF (66.9%) > MP (58.5%) > SP (51.0%). The mean proportions of Fe/Al-OC to MAOC were as follows: EF (53.3%) > SP (48.3%) > MP (47.9%) > BCP (39.8%). All these proportion increased with soil depth. RDA and PLS-SEM analysis revealed that soil nitrogen content and electrochemical properties (pH and EC) were the main factors that controlled SOC content and fractions. Conclusions Subtropical plantations have significant soil carbon sequestration capabilities, but they are currently nearing saturation. Soil nitrogen content may be key factor limiting further enhancement of carbon sequestration. Due to the high proportion of MAOC and relative consistent SOC storage, BCP and SP are recommended as priorities for plantation regeneration in subtropical China. |
| WOS关键词 | ECOSYSTEMS ; GRASSLAND ; STORAGE ; STOCKS ; ROOT |
| 资助项目 | National Natural Science Foundation of China[42301042] ; National Natural Science Foundation of China[42171035] ; National Natural Science Foundation of China[41830860] ; National Natural Science Foundation of China[42077302] ; National Natural Science Foundation of China |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:001161807600003 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203041]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Song, Xianwei |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Guangxi Univ, Guangxi Coll Univ Key Lab Cultivat & Utilizat Subt, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Lu,Song, Xianwei,Lyu, Sidan,et al. Dynamics and fractions of soil organic carbon in response to 35 years of afforestation in subtropical China[J]. PLANT AND SOIL,2024:14. |
| APA | Yang, Lu,Song, Xianwei,Lyu, Sidan,Shen, Weijun,&Gao, Yang.(2024).Dynamics and fractions of soil organic carbon in response to 35 years of afforestation in subtropical China.PLANT AND SOIL,14. |
| MLA | Yang, Lu,et al."Dynamics and fractions of soil organic carbon in response to 35 years of afforestation in subtropical China".PLANT AND SOIL (2024):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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