Original Articles Deep carbon dioxide flows substantially contributes to soil-atmosphere carbon flux from Robinia pseudoacacia forests
文献类型：期刊论文
| 作者 | Hao, Wanglin1,2,3; Li, Binbin1,2; Xia, Bin1,2; Xu, Mingxiang1,2,4,5 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 141页码:14 |
| 关键词 | Structural equation model Soil profile Driving factors Vertical diffusion CO2 flux |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2022.109062 |
| 通讯作者 | Xu, Mingxiang(xumx@nwsuaf.edu.cn) |
| 英文摘要 | Alterations in land use and vegetation cover cause CO2 transfer not only to the soil surface but also across soil profiles. To explore the vertical diffusion characteristics of CO2 in deep soil profiles and their driving factors, we calculated CO2 flux and measured environmental factors in sections situated from 0 to 200 cm in Robinia pseudoacacia forests (Loess Hilly Region, China). The results found that (1) Deep soils (> 80 cm) exhibited a stable contribution to the soil-atomosphere CO2 flux, ranging from 21.81% to 24.42%. (2) The total CO2 storage within deep layers accounted for 55.03-79.98% of the total storage in the layer at 0-200 cm. The stable storage of CO2 at deep layers helped suppress the mineralization of organic carbon in deep soil; (3) Soil temperature, moisture, CO2 concentration, aerated porosity, SOC content, bulk density, total porosity, root density, microbial biomass carbon (MBC), pH, and profile depth explained 86.0% and 89.1% of the variance in CO2 flux at shallow and deep layers, respectively. Soil moisture was the key limiting factor for vertical differentiation of CO2 fluxes in deep and shallow layers. The sensitivity of temperature and aerated porosity on CO2 flux increased with soil depth increasing. While the soil microbial biomass carbon had a weaker effect on CO2 flux both in the deep and shallow layers. Root stimulation was more likely to induce CO2 emission in deep layers. However, increase of pH was more conducive to CO2 fixation and flux reduction in deep layers. Our results help to further clarify the mechanisms of carbon emission in deep soil carbon pools, and provide a theoretical basis for scientific evaluation of soil carbon emissions. |
| WOS关键词 | LAND-USE CHANGE ; CO2 PRODUCTION ; LOESS PLATEAU ; INORGANIC CARBON ; TEMPERATURE SENSITIVITY ; PRESSURE CHANGES ; ORGANIC-CARBON ; NITROUS-OXIDE ; RESPIRATION ; EFFLUX |
| 资助项目 | National Natural Science Foundation ofChina[42177345] ; Scientific and Technologial Innovation Programs of Higher Education Institutions of Shanxi Province[2020L0680] ; Key Research and Development Program in Lvliang City[2020SHFZ45] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000818442500004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation ofChina ; Scientific and Technologial Innovation Programs of Higher Education Institutions of Shanxi Province ; Key Research and Development Program in Lvliang City |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/180931]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Mingxiang |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 3.LyuLiang Univ, Dept Life Sci, Lvliang 033000, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Wanglin,Li, Binbin,Xia, Bin,et al. Original Articles Deep carbon dioxide flows substantially contributes to soil-atmosphere carbon flux from Robinia pseudoacacia forests[J]. ECOLOGICAL INDICATORS,2022,141:14. |
| APA | Hao, Wanglin,Li, Binbin,Xia, Bin,&Xu, Mingxiang.(2022).Original Articles Deep carbon dioxide flows substantially contributes to soil-atmosphere carbon flux from Robinia pseudoacacia forests.ECOLOGICAL INDICATORS,141,14. |
| MLA | Hao, Wanglin,et al."Original Articles Deep carbon dioxide flows substantially contributes to soil-atmosphere carbon flux from Robinia pseudoacacia forests".ECOLOGICAL INDICATORS 141(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。