The efficiency of organic C sequestration in deep soils is enhanced by drier climates
文献类型：期刊论文
| 作者 | Wang, Shaofei1,5; Gao, Xiaodong2,3,4; Yang, Min1,5; Zhang, Li1,5; Wang, Xianzhi1,5; Wu, Pute2,4; Zhao, Xining2,4 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 415页码:9 |
| 关键词 | SOC Soil water SOC sequestration efficiency Precipitation Drylands |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2022.115774 |
| 通讯作者 | Gao, Xiaodong(gao_xiaodong@nwafu.edu.cn) |
| 英文摘要 | Accurate assessment of organic C sequestration in deep soils is crucial to C management and understand the role of deep-rooted vegetation in the C cycle. Trees in drylands usually develop roots to access deep water resources. Deep soils typically contain large stores of sequestrated C because the microbial activities that decompose C are limited and C turnover time is long. However, we know little about whether root water uptake can benefit organic C sequestration in deep soils and the effect of precipitation on organic C sequestration. To address this, we selected five sites along a precipitation gradient from 422 mm to 606 mm on China's Loess Plateau, and collected soil samples down to 1000 cm to measure soil organic C (SOC) content and soil water content (SWC) in both apple orchards and arable lands. We found that SOC storage (SOCS) and soil water storage (SWS) of two vegetation types in 0-800 cm soil layers increased significantly with increasing mean annual precipitation (MAP). Apple orchards showed greater SOC sequestration, particularly in deep soils (200-1000 cm), across each precipitation gradient relative to the corresponding arable lands. The & UDelta;SOCS (difference in SOCS between apple orchards and the corresponding arable lands) in deep soils gradually decreased as MAP increased, and & UDelta;SOCS for MAP = 422 mm was almost twice as great as that for MAP = 606 mm. Moreover, the ratio of & UDelta;SOCS/& UDelta;SWS in deep soils significantly increased as MAP decreased in the interval 400-610 mm. This indicates that the efficiency of SOC sequestration in deep soils is enhanced in a drier climate. The findings here indicate that deep soils may contribute greatly to organic C sequestration, and may provide insights into the water-C relationships in deep soils. |
| WOS关键词 | LOESS PLATEAU ; VEGETATION RESTORATION ; CARBON SEQUESTRATION ; PLANT ; MOISTURE ; LAND ; EVAPOTRANSPIRATION ; REVEGETATION ; ANABOLISM ; RESPONSES |
| 资助项目 | National Key Research and Development Program of China[2021YFD1900700] ; National Natural Science Foundation of China[42125705] ; Shaanxi Key Research and Development Program[2020ZDLNY07-04] ; Natural Science Basic Research Program of Shaanxi[2021JC-19] ; Cyrus Tang Foundation[B12007] ; 111 project |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000795928100004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Shaanxi Key Research and Development Program ; Natural Science Basic Research Program of Shaanxi ; Cyrus Tang Foundation ; 111 project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177357]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Xiaodong |
| 作者单位 | 1.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Area, Minist Educ, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.26, Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shaofei,Gao, Xiaodong,Yang, Min,et al. The efficiency of organic C sequestration in deep soils is enhanced by drier climates[J]. GEODERMA,2022,415:9. |
| APA | Wang, Shaofei.,Gao, Xiaodong.,Yang, Min.,Zhang, Li.,Wang, Xianzhi.,...&Zhao, Xining.(2022).The efficiency of organic C sequestration in deep soils is enhanced by drier climates.GEODERMA,415,9. |
| MLA | Wang, Shaofei,et al."The efficiency of organic C sequestration in deep soils is enhanced by drier climates".GEODERMA 415(2022):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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