globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2020.103250
论文题名:
Global variations and controlling factors of soil nitrogen turnover rate
作者: Li Z.; Zeng Z.; Tian D.; Wang J.; Wang B.; Chen H.Y.H.; Quan Q.; Chen W.; Yang J.; Meng C.; Wang Y.; Niu S.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 207
语种: 英语
中文关键词: Climatic factor ; Microbial biomass ; Nitrogen turnover ; Soil C:N ; Soil nitrogen availability ; Soil properties
英文关键词: bioavailability ; biomass ; climate effect ; global change ; latitude ; soil microorganism ; soil nitrogen ; soil property ; turnover
英文摘要: Soil 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. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166154
Appears in Collections:气候变化与战略

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作者单位: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada; Shenzhen Graduate School, Peking University, Shenzhen, 518055, China; College of Earth Science, Chengdu University of Technology, Chengdu, 610059, China

Recommended Citation:
Li Z.,Zeng Z.,Tian D.,et al. Global variations and controlling factors of soil nitrogen turnover rate[J]. Earth Science Reviews,2020-01-01,207
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