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Influences of shallow groundwater depth on N 2 O diffusion along the soil profile of summer maize fields in North China Plain

文献类型：期刊论文

作者Li, Zhao4; Li, Xurun3; Zhang, Qiuying5; Li, Fadong4; Qiao, Yunfeng4; Liu, Shanbao5; Leng, Peifang4; Tian, Chao4; Chen, Gang1; Cheng, Hefa2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024-05-20
卷号926页码:171861
关键词Shallow groundwater depth (SGD) Soil profile Nitrous oxide(N2O) Lysimeter Summer maize field North China plain (NCP)
DOI10.1016/j.scitotenv.2024.171861
产权排序2
文献子类Article
英文摘要The emissions of nitrous oxide (N 2 O) from agricultural fields are a significant contribution to global warming. Understanding the mechanisms of N 2 O emissions from agricultural fields is essential for the development of N 2 O emission mitigation strategies. Currently, there are extensive studies on N 2 O emissions on the surface of agricultural soils, while studies on N 2 O fluxes at the interface between the saturated and unsaturated zones (ISU) are limited. Uncertainties exist regarding N 2 O emissions from the soil -shallow groundwater systems in agricultural fields. In this study, a three-year lysimeter experiment (2019 - 2020, 2022) was conducted to simulate the soilshallow groundwater systems under four controlled shallow groundwater depth (SGD) (i.e., SGD = 40, 70, 110, and 150 cm) conditions in North China Plain (NCP). Weekly continuous monitoring of N 2 O emissions from soil surface, N 2 O concentration in the shallow groundwater and the upper 10 cm of pores at the ISU, and nitrogen cycling -related parameters in the soil and groundwater was conducted. The results showed that soil surface N 2 O emissions increased with decreased shallow groundwater depth, and the highest emissions of 96.44 kg ha -1 and 104.32 kg ha -1 were observed at G2 (SGD = 40 cm) in 2020 and 2022. During the observation period of one maize growing season, shallow groundwater acted as a sink for the unsaturated zone when the groundwater depth was 40 cm, 70 cm, and 110 cm. However, when SGD was 150 cm, shallow groundwater became a source for the unsaturated zone. After fertilization, the groundwater in all treatment plots behaved as a sink for the unsaturated zone, and the diffusion intensity decreased with increasing SGD. The results would provide a theoretical basis for cropland water management to reduce N 2 O emissions.
WOS关键词NITROUS-OXIDE EMISSIONS ; N2O EMISSIONS ; GREENHOUSE GASES ; WATER ; DYNAMICS ; TEMPERATURE ; CHALLENGES ; MOISTURE ; AQUIFER ; TABLE
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:001218668700001
源URL[http://ir.igsnrr.ac.cn/handle/311030/205204]  
专题禹城站农业生态系统研究中心_外文论文
通讯作者Zhang, Qiuying
作者单位1.Florida A&M Univ FAMU Florida State Univ FSU Joint, Dept Civil & Environm Engn, Tallahassee, FL 32310 USA
2.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
3.Shandong Agr Univ, Tai An 271018, Peoples R China
4.Chinese Acad Sci, Shandong Yucheng Agroecosystem Natl Observat & Res, Yucheng Comprehens Expt Stn, IGSNRR, Beijing 100101, Peoples R China
5.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhao,Li, Xurun,Zhang, Qiuying,et al. Influences of shallow groundwater depth on N 2 O diffusion along the soil profile of summer maize fields in North China Plain[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,926:171861.
APA Li, Zhao.,Li, Xurun.,Zhang, Qiuying.,Li, Fadong.,Qiao, Yunfeng.,...&Cheng, Hefa.(2024).Influences of shallow groundwater depth on N 2 O diffusion along the soil profile of summer maize fields in North China Plain.SCIENCE OF THE TOTAL ENVIRONMENT,926,171861.
MLA Li, Zhao,et al."Influences of shallow groundwater depth on N 2 O diffusion along the soil profile of summer maize fields in North China Plain".SCIENCE OF THE TOTAL ENVIRONMENT 926(2024):171861.

入库方式： OAI收割

来源：地理科学与资源研究所

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