气候变化领域集成服务门户(CCPortal): Global variations and controlling factors of soil nitrogen turnover rate

CCPortal

DOI	10.1016/j.earscirev.2020.103250
	Global variations and controlling factors of soil nitrogen turnover rate
	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.
发表日期	2020
ISSN	00128252
卷号	207
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.
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
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203785
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
推荐引用方式 GB/T 7714	Li Z.,Zeng Z.,Tian D.,et al. Global variations and controlling factors of soil nitrogen turnover rate[J],2020,207.
APA	Li Z..,Zeng Z..,Tian D..,Wang J..,Wang B..,...&Niu S..(2020).Global variations and controlling factors of soil nitrogen turnover rate.Earth Science Reviews,207.
MLA	Li Z.,et al."Global variations and controlling factors of soil nitrogen turnover rate".Earth Science Reviews 207(2020).