Continuous crop rotation increases soil organic carbon stocks in riverdelta?: A 40-year field evidence
文献类型：期刊论文
| 作者 | Liu, Deyao1,5; Gong, Huarui4,5; Li, Jing5; Liu, Zhen4; Wang, Lingqing5; Ouyang, Zhu4,5; Xu, Li3; Wang, Tieyu2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024 |
| 卷号 | 906页码:11 |
| ISSN号 | 0048-9697 |
| 关键词 | Cotton Driving factors River deltas Soil organic carbon stock Wheat-maize |
| DOI | 10.1016/j.scitotenv.2023.167749 |
| 通讯作者 | Li, Jing(jingli@igsnrr.ac.cn) |
| 英文摘要 | River deltas, as important food production centers, support 66 % of the world's population, together with other coastal areas. However, agriculture in river deltas is negatively affected by soil salinization and agricultural intensification. Improving the soil carbon pool is a mutually beneficial solution for maximizing crop production and improving climate resilience to secure food production. In this study, long-term croplands in the Yellow River Delta (YRD), with a wheat-maize (WM) rotation system and a single cotton (SC) cropping system, were selected to explore the changes in soil organic carbon (SOC) stocks and the driving mechanisms at 0-20 cm depth from 1980 to 2020. We found that, over the past 40 years, the SOC stocks in WM and SC croplands had increased by 10.05 Mg C ha(-1) and 7.44 Mg C ha(-1), respectively. The Random forest model revealed that in the WM croplands, soil N stock and available K were the most important driving factors of SOC stocks, while in SC croplands, soil type and salinity were the most important driving factors of SOC stock dynamics. An increase in soil salinity to 2.0 parts per thousand caused a 17.5 % loss in SOC stocks in SC croplands. Our results show that, in the long run, croplands with a WM rotation system have stronger carbon sequestration potential. Depending on the planting system, promoting crop carbon input under high soil nutrients and affecting SOC decomposition by soil salinity are two different pathways of SOC sequestration in delta croplands. We propose that nutrient management and organic fertilizer application are crucial for increasing SOC stocks in the WM and SC croplands, respectively. This study confirms that it is of practical significance to take measures to promote soil carbon sequestration at the farmland scale and to provide scientific guidance for the sustainable development of river delta agriculture. |
| WOS关键词 | MANAGEMENT ; SEQUESTRATION ; IRRIGATION ; SALINITY ; DELTA ; ACCUMULATION ; AGRICULTURE ; MECHANISMS ; DYNAMICS ; FEEDBACK |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001159520200001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/202900]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Jing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Shantou Univ, Guangdong Prov Key Lab Marine Disaster Predict & P, Shantou 515063, Peoples R China 3.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Yellow River Delta Modern Agr Engn Lab, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Deyao,Gong, Huarui,Li, Jing,et al. Continuous crop rotation increases soil organic carbon stocks in riverdelta?: A 40-year field evidence[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,906:11. |
| APA | Liu, Deyao.,Gong, Huarui.,Li, Jing.,Liu, Zhen.,Wang, Lingqing.,...&Wang, Tieyu.(2024).Continuous crop rotation increases soil organic carbon stocks in riverdelta?: A 40-year field evidence.SCIENCE OF THE TOTAL ENVIRONMENT,906,11. |
| MLA | Liu, Deyao,et al."Continuous crop rotation increases soil organic carbon stocks in riverdelta?: A 40-year field evidence".SCIENCE OF THE TOTAL ENVIRONMENT 906(2024):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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