Global variations and controlling factors of soil nitrogen turnover rate
Li, Zhaolei1,2; Zeng, Zhaoqi1,3; Tian, Dashuan1; Wang, Jinsong1; Wang, Bingxue1; Chen, Han Y. H.4; Quan, Quan1,3; Chen, Weinan1,3; Yang, Jilin1,3; Meng, Cheng1,5; Wang, Yi6; Niu, Shuli1,3
Corresponding AuthorNiu, Shuli(sniu@igsnrr.ac.cn)
AbstractSoil nitrogen (N) availability, which is crucial to plant growth, largely relies on the turnover of soil organic N into inorganic N through mineralization. However, the patterns and drivers of global soil N turnover rates (NTR) have not been carefully examined so far. We compiled a dataset that consists of 1175 observations from 159 published articles across various terrestrial ecosystems in the world. Our analysis of this dataset showed that changes in soil NTR successfully predicted global NH4+-N content, a key indicator of soil N availability. Our analysis also revealed a clear latitudinal pattern of soil NTR, which was high in low latitude but low in high latitude. Soil NTR was greater in croplands than grasslands and wetlands. The dominant driving variables were mean annual temperature which accounted for 23% of the total variation in soil NTR. Soil clay content explained 15% of the total variation and it strongly inhibited soil NTR. However, the key driver in soil NTR differed with ecosystem type, i.e. soil microbial biomass in croplands, clay content in forests and grasslands, and soil C:N ratio in wetlands. This study highlights the importance of climatic factors and soil properties on soil NTR, which should be integrated into biogeochemical models to better predict the changes of soil N availability at the global scale.
KeywordSoil nitrogen availability Nitrogen turnover Climatic factor Soil properties Soil C:N Microbial biomass
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31625006] ; CAS international collaboration program[131A11KYSB20180010] ; Postdoctoral Science Foundation of China[2018M641459] ; China International Postdoctoral Exchange Fellowship Program[20190071]
Funding OrganizationNational Natural Science Foundation of China ; CAS international collaboration program ; Postdoctoral Science Foundation of China ; China International Postdoctoral Exchange Fellowship Program
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000556899700023
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorNiu, Shuli
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Shandong Agr Univ, Key Lab Agr Environm Univ Shandong, Coll Resources & Environm, Natl Engn Lab Efficient Utilizat Soil & Fertilize, Tai An 271018, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
4.Lakehead Univ, Fac Nat Resources Management, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
5.Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
6.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhaolei,Zeng, Zhaoqi,Tian, Dashuan,et al. Global variations and controlling factors of soil nitrogen turnover rate[J]. EARTH-SCIENCE REVIEWS,2020,207:10.
APA Li, Zhaolei.,Zeng, Zhaoqi.,Tian, Dashuan.,Wang, Jinsong.,Wang, Bingxue.,...&Niu, Shuli.(2020).Global variations and controlling factors of soil nitrogen turnover rate.EARTH-SCIENCE REVIEWS,207,10.
MLA Li, Zhaolei,et al."Global variations and controlling factors of soil nitrogen turnover rate".EARTH-SCIENCE REVIEWS 207(2020):10.
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