Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13620 |
Extreme rainfall and snowfall alter responses of soil respiration to nitrogen fertilization: a 3-year field experiment | |
Chen, Zengming1,2; Xu, Yehong1,2; Zhou, Xuhui3,4; Tang, Jianwu5; Kuzyakov, Yakov6,7; Yu, Hongyan1; Fan, Jianling1; Ding, Weixin1 | |
2017-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; Germany |
英文摘要 | Extreme precipitation is predicted to be more frequent and intense accompanying global warming and may have profound impacts on soil respiration (Rs) and its components, that is, autotrophic (Ra) and heterotrophic (Rh) respiration. However, how natural extreme rainfall or snowfall events affect these fluxes are still lacking, especially under nitrogen (N) fertilization. In this study, extreme rainfall and snowfall events occurred during a 3-year field experiment, allowing us to examine their effects on the response of Rs, Rh, and Ra to N supply. In normal rainfall years of 2011/2012 and 2012/2013, N fertilization significantly stimulated Rs by 23.9% and 10.9%, respectively. This stimulation was mainly due to the increase of Ra because of N-induced increase in plant biomass. In the record wet year of 2013/2014, however, Rs was independent on N supply because of the inhibition effect of the extreme rainfall event. Compared with those in other years, Rh and Ra were reduced by 36.8% and 59.1%, respectively, which were likely related to the anoxic stress on soil microbes and decreased photosynthates supply. Although N supply did not affect annual Rh, the response ratio (RR) of Rh flux to N fertilization decreased firstly during growing season, increased in nongrowing season and peaked during spring thaw in each year. Nongrowing season Rs and Rh contributed 5.5-16.4% to their annual fluxes and were higher in 2012/2013 than other years due to the extreme snowfall inducing higher soil moisture during spring thaw. The RR of nongrowing season Rs and Rh decreased in years with extreme snowfall or rainfall compared to those in normal years. Overall, our results highlight the significant effects of extreme precipitation on responses of Rs and its components to N fertilization, which should be incorporated into models to improve the prediction of carbon-climate feedbacks. |
英文关键词 | autotrophic respiration extreme precipitation heterotrophic respiration nitrogen fertilization nongrowing season soil respiration soil waterlogging spring thaw |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404863300037 |
WOS关键词 | GREENHOUSE-GAS EMISSIONS ; CO2 EFFLUX ; HETEROTROPHIC RESPIRATION ; ECOSYSTEM RESPIRATION ; ZEA-MAYS ; CARBON ; TEMPERATURE ; CLIMATE ; PRECIPITATION ; FOREST |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16659 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200062, Peoples R China; 4.East China Normal Univ, Ctr Global Change & Ecol Forecasting, Shanghai 200062, Peoples R China; 5.Ecosyst Ctr, Woods Hole, MA 02543 USA; 6.Univ Gottingen, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany; 7.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Busgenweg 2, D-37077 Gottingen, Germany |
推荐引用方式 GB/T 7714 | Chen, Zengming,Xu, Yehong,Zhou, Xuhui,et al. Extreme rainfall and snowfall alter responses of soil respiration to nitrogen fertilization: a 3-year field experiment[J]. GLOBAL CHANGE BIOLOGY,2017,23(8). |
APA | Chen, Zengming.,Xu, Yehong.,Zhou, Xuhui.,Tang, Jianwu.,Kuzyakov, Yakov.,...&Ding, Weixin.(2017).Extreme rainfall and snowfall alter responses of soil respiration to nitrogen fertilization: a 3-year field experiment.GLOBAL CHANGE BIOLOGY,23(8). |
MLA | Chen, Zengming,et al."Extreme rainfall and snowfall alter responses of soil respiration to nitrogen fertilization: a 3-year field experiment".GLOBAL CHANGE BIOLOGY 23.8(2017). |
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