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Non-Synergistic Changes in Migration Processes between Soil Salt and Water in the Salt Patch of the Coastal Saline Soil

文献类型：期刊论文

作者Fang, Xiang1,2,3; Liu, Zhen2,3; Li, Jing2,3; Lai, Jianbin2,3; Gong, Huarui2,3; Sun, Zhigang2,3; Ouyang, Zhu2,3; Dou, Wenjun4; Fa, Keyu1
刊名AGRONOMY-BASEL
出版日期2023-09-01
卷号13期号:9页码:18
关键词soil salinization salt patches water and salt transport spatial and temporal variability patterns predictive models
DOI10.3390/agronomy13092403
通讯作者Liu, Zhen(liuzhen@igsnrr.ac.cn) ; Fa, Keyu(fakeyu@cau.edu.cn)
英文摘要Salt patches (SPs) with surface salt accumulation pose a serious threat to agriculture in coastal saline lands. However, the migration and distribution of soil water and salt in SPs remain unclear due to complex water-salt transport dynamics. In this study, we focused on typical SPs in the Yellow River Delta region and selected center site (Site 1), transition site (Site 2), edge site (Site 3), and outer site (Site 4) with varying levels of salinization. Field sampling and the HYDRUS-1D model were employed to investigate the migration process and distribution of soil water and salt in SPs, as well as the influencing factors. The results indicated significantly higher salt contents in the central sites (Site 1 and Site 2) compared to the edge sites (Site 3 and Site 4), while no significant differences were observed in soil water content. The bottom soil exhibited greater stability in terms of water and salt content compared to the surface soil. Additionally, soil water content increased with soil depth, whereas salt content decreased from Site 1 to Site 3. Interestingly, Site 4 exhibited the opposite salt distribution pattern in the whole soil depth. We observed that SPs displayed a salt aggregation structure radiating from the center to the periphery, gradually weakening in intensity. Our correlation analysis indicated that the formation of SPs may be influenced by soil particle size distribution, precipitation, and evaporation. Specifically, fine soil structure can impede the upward transport of highly mineralized groundwater, while precipitation and evaporation directly affect the leaching and upward movement of surface soil salt, resulting in uneven salt distribution in the field and the formation of SPs. These findings provide valuable theoretical and technical insights for the prevention and improvement of saline farmlands in the Yellow River Delta.
WOS关键词TRANSPORT ; IRRIGATION ; BIOENERGY ; EASTERN ; CROP
资助项目National Agricultural Major Science and Technology Project[NK2022180401-1] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA26050202] ; National Key Research and Development Program of China[2021YFD190090503]
WOS研究方向Agriculture ; Plant Sciences
语种英语
出版者MDPI
WOS记录号WOS:001072531700001
资助机构National Agricultural Major Science and Technology Project ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/198514]  
专题中国科学院地理科学与资源研究所
通讯作者Liu, Zhen; Fa, Keyu
作者单位1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, CAS Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China
3.Shandong Dongying Inst Geog Sci, Dongying 257000, Peoples R China
4.Yellow River Estuary Land Sea Interact Field Res S, Yantai Coastal Geol Survey, Yantai 264000, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Xiang,Liu, Zhen,Li, Jing,et al. Non-Synergistic Changes in Migration Processes between Soil Salt and Water in the Salt Patch of the Coastal Saline Soil[J]. AGRONOMY-BASEL,2023,13(9):18.
APA Fang, Xiang.,Liu, Zhen.,Li, Jing.,Lai, Jianbin.,Gong, Huarui.,...&Fa, Keyu.(2023).Non-Synergistic Changes in Migration Processes between Soil Salt and Water in the Salt Patch of the Coastal Saline Soil.AGRONOMY-BASEL,13(9),18.
MLA Fang, Xiang,et al."Non-Synergistic Changes in Migration Processes between Soil Salt and Water in the Salt Patch of the Coastal Saline Soil".AGRONOMY-BASEL 13.9(2023):18.

入库方式： OAI收割

来源：地理科学与资源研究所

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