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Projections of soil salinization and organic carbon dynamics in the Yellow River Delta under future scenarios

文献类型：期刊论文

作者Qiu, Haonan3; Yang, Shihong3; Wang, Guangmei1,2; Zhang, Jie1,3; Dong, Shide1,2; Liu, Xiaoling2; Xu, Yi3; Liu, Hanwen1,2; Jiang, Zewei3; Meng, Tianzhu3
刊名AGRICULTURAL WATER MANAGEMENT
出版日期2025-10-01
卷号319页码:12
关键词Soil salinization Soil organic carbon Future scenarios Yellow River Delta
ISSN号0378-3774
DOI10.1016/j.agwat.2025.109801
通讯作者Yang, Shihong(ysh7731@hhu.edu.cn)
英文摘要Soil salinization and soil organic carbon (SOC) critically influence soil quality. However, their future dynamics under climate change remain uncertain. Based on 214 soil samples (soil salt content: 0.03 %-3.05 %; SOC: 2.23 g/kg-16.65 g/kg) and multi-source data, the Back propagation neural network was used to construct a model of soil salinity and SOC stock to a depth of 20 cm, and SOC in Yellow River Delta (YDR) in 2023. The Space-For-Time Substitution method was used to predict salinization and SOC alterations in YDR in 2050-2100 under the shared socio-economic pathways (SSP119: Low-emissions scenario with global warming limited to 1.5 degrees C, SSP245: Medium-emissions scenario reaching 2.7 degrees C warming by 2100). Results showed compared to 2023, under SSP119 the annual mean temperature and precipitation during 2050-2100 show an initial increase followed by decrease, while under SSP245 they exhibit a continuous increasing trend. The proportion of soil salinization in 2023 was 83.22 % (The proportion of the region with salt content exceeding 0.1 %), soil salinization was exacerbated to varying degrees in all future scenarios, with a significant increase in areas of High Salinity (salt content >0.6 %). SOC stock (13.92 Tg in 2023) displayed different future patterns, peaking then declining under SSP119 but gradually increasing under SSP245. Soil fertility in the YRD is deemed low, with area of high SOC is extremely rare (>17.4 g/kg). Areas with low SOC typically exhibit severe salinization. Consequently, these findings highlight the need for adaptive water management and carbon sequestration strategies to sustain agriculture in saline-alkali ecosystems.
WOS关键词LOESS PLATEAU ; CHINA ; SALINITY ; LAND ; QUALITY ; TEMPERATURE ; ACCURACY ; DATASET ; SYSTEMS ; MODEL
WOS研究方向Agriculture ; Water Resources
语种英语
WOS记录号WOS:001574295400001
资助机构National Key Research & Development Program of China ; Key Research and Development Plan of Jiangsu Province ; Science & Technology Specific Projects in Agricultural High-tech Industrial Demonstration Area of the Yellow River Delta ; National Natural Science Foundation of China
源URL[http://ir.yic.ac.cn/handle/133337/41377]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者Yang, Shihong
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yellow River Delta Saline Alkali Agroecosyst Obser, Dongying 257000, Shandong, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China
3.Hohai Univ, Coll Agr Sci & Engn, 8th Focheng West Rd, Nanjing 210098, Peoples R China
推荐引用方式
GB/T 7714		 Qiu, Haonan,Yang, Shihong,Wang, Guangmei,et al. Projections of soil salinization and organic carbon dynamics in the Yellow River Delta under future scenarios[J]. AGRICULTURAL WATER MANAGEMENT,2025,319:12.
APA Qiu, Haonan.,Yang, Shihong.,Wang, Guangmei.,Zhang, Jie.,Dong, Shide.,...&Zhang, Dingwen.(2025).Projections of soil salinization and organic carbon dynamics in the Yellow River Delta under future scenarios.AGRICULTURAL WATER MANAGEMENT,319,12.
MLA Qiu, Haonan,et al."Projections of soil salinization and organic carbon dynamics in the Yellow River Delta under future scenarios".AGRICULTURAL WATER MANAGEMENT 319(2025):12.

入库方式： OAI收割

来源：烟台海岸带研究所

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