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Widespread asymmetric response of soil heterotrophic respiration to warming and cooling

文献类型：期刊论文

作者Liu, Yuan5; Wen, Xuefa5; Zhang, Yunhai3,6; Tian, Jing5; Gao, Yang; Ostle, Anichloas J.; Niu, Shuli; Chen, Shiping6; Sun, Xiaomin; He, Nianpeng4,5
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2018
卷号635页码:423-431
关键词Heterotrophic respiration Warming Cooling Asymmetric response Forest
ISSN号0048-9697
DOI10.1016/j.scitotenv.2018.04.145
文献子类Article
英文摘要Soil is the largest organic carbon (C) pool in terrestrial ecosystems. Periodic changes in environmental temperature occur diurnally and seasonally; yet, the response of soil organic matter (SOM) decomposition to varying temperatures remains unclear. In this study, we conducted a modified incubation experiment using soils from 16 forest ecosystems in China with periodically and continuously varying incubation temperature to investigate how heterotrophic respiration (Rh) responds to different temperature patterns (both warming and cooling temperature ranging between 5 and 30 degrees C). Our results showed a pronounced asymmetric response of Rh to temperature warming and cooling among the soils of all forest ecosystems, with Rh increasing more rapidly during the warming phase compared to the cooling phase. This asymmetric response of Rh to warming and cooling temperatures was widespread in all soils. In addition, the amplitude of this asymmetric response differed among different forest ecosystems, with subtropical and warm-temperate forest ecosystems exhibiting greater asymmetric responses. Path analyses showed that soil pH and the microbial community explained most of the variation in this asymmetric response. Furthermore, the widespread asymmetric response of Rh to warming and cooling temperatures suggests that accumulated SOM decomposition might be overestimated on average by 20% for warming alone when compared with admix warming and cooling. These findings provide new insights on the responses of Rh to natural shifts in temperature, emphasizing the need to consider this widespread asymmetric response of Rh to warming and cooling phases to predict C-climate feedback with great accuracy, especially under future non-uniform warming scenarios. (C) 2018 Elsevier B.V. All rights reserved.
学科主题Environmental Sciences
出版地AMSTERDAM
电子版国际标准刊号1879-1026
WOS关键词ORGANIC-MATTER DECOMPOSITION ; RECIPROCAL TRANSLOCATION EXPERIMENT ; MICROBIAL COMMUNITY COMPOSITION ; TEMPERATURE SENSITIVITY ; ARCTIC SOIL ; CARBON ; VEGETATION ; FORESTS ; QUALITY ; GROWTH
语种英语
WOS记录号WOS:000436494400042
出版者ELSEVIER SCIENCE BV
资助机构National Key R&D program of China [2017YFC0503904] ; Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41571130043, 41671045] ; program of Youth Innovation Research Team Project [LENOM2016Q0005]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20529]  
专题植被与环境变化国家重点实验室
作者单位1.Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA
2.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Jilin, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
4.Ostle, Anichloas J.] Univ Lancaster, Ctr Ecol & Hydrol, Lancaster Environm Ctr, Lib Ave, Lancaster LA1 4AP, England
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Yuan,Wen, Xuefa,Zhang, Yunhai,et al. Widespread asymmetric response of soil heterotrophic respiration to warming and cooling[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,635:423-431.
APA Liu, Yuan.,Wen, Xuefa.,Zhang, Yunhai.,Tian, Jing.,Gao, Yang.,...&He, Nianpeng.(2018).Widespread asymmetric response of soil heterotrophic respiration to warming and cooling.SCIENCE OF THE TOTAL ENVIRONMENT,635,423-431.
MLA Liu, Yuan,et al."Widespread asymmetric response of soil heterotrophic respiration to warming and cooling".SCIENCE OF THE TOTAL ENVIRONMENT 635(2018):423-431.

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来源：植物研究所

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