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Soil moisture determines effects of climates and soil properties on nitrogen cycling: Examination of arid and humid soils

文献类型：期刊论文

作者Lu, Tianhui5,7,8,10,11; Wang, Jing9; Zhu, Hansong3,6; Zhong, Zekun6; Wang, Xiang2; Jia, Xiaoxu1,6; Shao, Mingan4,6,10,11; Wei, Xiaorong4,6,10,11
刊名JOURNAL OF ENVIRONMENTAL MANAGEMENT
出版日期2025
卷号373页码:9
关键词Net N mineralization Soil moisture Climatic regions Substrates Soil pH Soil texture
ISSN号0301-4797
DOI10.1016/j.jenvman.2024.123831
通讯作者Wei, Xiaorong(weixr@nwsuaf.edu.cn)
英文摘要While soil moisture has a significant effect on nitrogen (N) cycling, how it influences the dependence of this important biological process on environmental factors is unknown. Specifically, it is unclear how the relationships of net N mineralization (Nm) and soil moisture vary with soil properties and climates. In turn, how the relationships of Nm vs. soil properties and climates vary with soil moisture is also unknown. Therefore, soil samples from the 26 sites were collected within two climatic regions (i.e., arid and humid) across China. Then a four-week microcosmic incubation experiment was conducted at five soil moisture levels (20, 40, 60, 80, and 100% field water holding capacity (FWHC)) at 25 degrees C to measure the dynamics of Nm. The results showed that increasing soil moisture significantly increased Nm (+212%) and the N mineralization rate constant (k) (+0.26%), and that the effects of soil moisture were greater in humid soils (+250%) than arid soils (+178%). The slopes of the relationship between Nm vs. soil moisture increased with soil organic carbon (SOC) (+50.6%) and total N (TN) (+65.3%) concentrations, and decreased with pH (-43.0%) and clay content (-0.09%), especially in arid regions. Additionally, Nm was significantly correlated with soil properties and mean annual precipitation (MAP), and the slopes of most of these relationships increased with soil moisture in arid soils (+59.2-3805%), but decreased in humid soils (-1.96-140%). The results indicated that increasing soil moisture strengthened the dependence of Nm on soil properties and climates in arid soils, and that increasing soil pH and clay content reduced, but SOC and TN concentrations enhanced the dependence of Nm on soil moisture. Therefore, with changes in rainfall distribution patterns and an increase in extreme rainfall events, there is enormous potential for Nm in agricultural soils in arid regions, which is regulated by soil moisture and properties. On the contrary, in humid regions, the decoupling of the effects of soil moisture and soil properties on N mineralization could be due to microbial adaptation. Moreover, the coupled effects of soil environment and properties on N cycling in different climatic regions merit great consideration in experimental research as well as in biogeochemical model development and prediction.
WOS关键词ORGANIC-CARBON ; N MINERALIZATION ; USE EFFICIENCY ; TEMPERATURE ; PRECIPITATION ; DECOMPOSITION ; ACCUMULATION ; ALLOCATION ; FREQUENCY ; GRADIENT
资助项目National Key Research and Development Program[2022YFF1302804] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070202] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40020000] ; National Natural Science Foundation of China[41977068] ; National Natural Science Foundation of China[41977105] ; National Natural Science Foundation of China[42277349] ; Chinese Academy of Sciences[QYZDB-SSW-DQC039]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001403046800001
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
资助机构National Key Research and Development Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/212951]  
专题中国科学院地理科学与资源研究所
通讯作者Wei, Xiaorong
作者单位1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.China Agr Univ, Coll Land Sci & Technol, Beijing 100049, Peoples R China
3.Natl Forestry & Grassland Adm, Wildlife Conservat Monitoring Ctr, Beijing 100714, Peoples R China
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Faming Loess Pla, Yangling 712100, Shaanxi, Peoples R China
7.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China
8.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
9.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
10.Minist Educ, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Tianhui,Wang, Jing,Zhu, Hansong,et al. Soil moisture determines effects of climates and soil properties on nitrogen cycling: Examination of arid and humid soils[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2025,373:9.
APA Lu, Tianhui.,Wang, Jing.,Zhu, Hansong.,Zhong, Zekun.,Wang, Xiang.,...&Wei, Xiaorong.(2025).Soil moisture determines effects of climates and soil properties on nitrogen cycling: Examination of arid and humid soils.JOURNAL OF ENVIRONMENTAL MANAGEMENT,373,9.
MLA Lu, Tianhui,et al."Soil moisture determines effects of climates and soil properties on nitrogen cycling: Examination of arid and humid soils".JOURNAL OF ENVIRONMENTAL MANAGEMENT 373(2025):9.

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来源：地理科学与资源研究所

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