Changing soil organic carbon with land use and management practices in a thousand-year cultivation region
文献类型：期刊论文
| 作者 | Niu, Xiaoqian1,2; Liu, Chenggong1,2; Jia, Xiaoxu1,2; Zhu, Juntao1,2 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 322页码:10 |
| ISSN号 | 0167-8809 |
| 关键词 | Soil organic carbon Agroecosystem Deep soil layer Land use change Land management practice |
| DOI | 10.1016/j.agee.2021.107639 |
| 通讯作者 | Jia, Xiaoxu(jiaxx@igsnrr.ac.cn) |
| 英文摘要 | Soil organic carbon (SOC) is a critical mass of global terrestrial carbon store that can be altered by land use and land management practices. As an important grain production area in the Yellow River basin, there have been intensive agricultural activities in the Guanzhong Plain for over 1000 years. The conversion of cropland into orchard and changes in land management practices could have altered the distribution and amount of SOC stores in the region. To determine spatial variations in SOC and its response to changes in land use and land management practices in the thousand-year cultivated region, SOC content was measured at 127 sites, including 117 sites in the 0-100 cm soil layer and 10 sites in the 0-1000 cm soil layer. The results showed a pronounced decline in SOC content with increasing depth in the upper 100 cm soil layer, whereas it was relatively low and stable in deeper soil layers. SOC stock in the 0-100 and 100-1000 cm soil layers accounted for 16.9% and 83.1%, respectively, of the total SOC stock in the 0-1000 cm soil profile. Compared with the 1980s, mean SOC stock in the 0-100 cm soil layer significantly increased (by 0.69 kg m-2) over the 40-year period. Furthermore, no significant difference was observed in SOC content between cropland and orchard land soils for both the 0-100 and 100-1000 cm soil layers. Land management practices (irrigation and fertilization), climatic variables (precipitation and temperature), and soil properties (pH and clay content) together influenced the spatial variations in SOC in the 0-60 cm soil depth. However, variations were dominantly driven by soil properties at depths below 60 cm. Therefore, while SOC in layers below 100 cm was critical for carbon budget estimations, SOC was not altered by changes in agricultural land use in both the shallow and deep soils of the study area. Agricultural management practices, soil properties, and organic carbon storage in deep soils need to be considered in future carbon budget studies in cultivated lands, especially in regions with deep soils. |
| WOS关键词 | LOESS PLATEAU ; CLIMATE-CHANGE ; SEQUESTRATION ; STOCKS ; CHINA ; CROPLANDS ; TILLAGE ; IMPACTS ; CONVERSION ; SCALE |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB40020000] ; National Natural Science Foundation of China[42022048] ; National Natural Science Foundation of China[41877016] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017076] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000707000600008 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167112]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jia, Xiaoxu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Xiaoqian,Liu, Chenggong,Jia, Xiaoxu,et al. Changing soil organic carbon with land use and management practices in a thousand-year cultivation region[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2021,322:10. |
| APA | Niu, Xiaoqian,Liu, Chenggong,Jia, Xiaoxu,&Zhu, Juntao.(2021).Changing soil organic carbon with land use and management practices in a thousand-year cultivation region.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,322,10. |
| MLA | Niu, Xiaoqian,et al."Changing soil organic carbon with land use and management practices in a thousand-year cultivation region".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 322(2021):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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