A Method for Estimating Annual Cumulative Soil/Ecosystem Respiration and CH4 Flux from Sporadic Data Collected Using the Chamber Method

doi:10.3390/atmos10100623

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	A Method for Estimating Annual Cumulative Soil/Ecosystem Respiration and CH4 Flux from Sporadic Data Collected Using the Chamber Method
	Yang, Meng 3; Yu, Guirui 1,3; He, Nianpeng 1,3; Grace, John 2; Wang, Qiufeng 1,3; Zhou, Yan 4
刊名	ATMOSPHERE
	2019-10-01
卷号	10 期号:10 页码:23
关键词	annual flux estimation soil/ecosystem respiration CH4 flux chamber method sporadic data upscaling
DOI	10.3390/atmos10100623
通讯作者	Yang, Meng(yangmeng@igsnrr.ac.cn) ; Yu, Guirui(yugr@igsnrr.ac.cn)
英文摘要	Measurements of greenhouse gas fluxes over many ecosystems have been made as part of the attempt to quantify global carbon and nitrogen cycles. In particular, annual flux observations are of great value for regional flux assessments, as well as model development and optimization. The chamber method is a popular approach for soil/ecosystem respiration and CH4 flux observations of terrestrial ecosystems. However, in situ flux chamber measurements are usually made with non-continuous sampling. To date, efficient methods for the application of such sporadic data to upscale temporally and obtain annual cumulative fluxes have not yet been determined. To address this issue, we tested the adequacy of non-continuous sampling using multi-source data aggregation. We collected 330 site-years monthly soil/ecosystem respiration and 154 site-years monthly CH4 flux data in China, all obtained using the chamber method. The data were randomly divided into a training group and verification group. Fluxes of all possible sampling months of a year, i.e., 4094 different month combinations were used to obtain the annual cumulative flux. The results showed a good linear relationship between the monthly flux and the annual cumulative flux. The flux obtained during the warm season from May to October generally played a more important role in annual flux estimations, as compared to other months. An independent verification analysis showed that the monthly flux of 1 to 4 months explained up to 67%, 89%, 94%, and 97% of the variability of the annual cumulative soil/ecosystem respiration and 92%, 99%, 99%, and 99% of the variability of the annual cumulative CH4 flux. This study supports the use of chamber-observed sporadic flux data, which remains the most commonly-used method for annual flux estimating. The flux estimation method used in this study can be used as a guide for designing sampling programs with the intention of estimating the annual cumulative flux.
资助项目	National Key Research and Development Program of China[2016YFA0600103] ; Chinese Academy of Sciences Strategic Priority Research Program[XDA19020302] ; Young Scientists Fund[31800406] ; Major International (Regional) Joint Research Project[31420103917] ; Startup Program of Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences[Y6V60220YZ]
WOS关键词	GREENHOUSE-GAS EMISSIONS ; ANNUAL SOIL RESPIRATION ; METHANE EMISSIONS ; FREQUENCY MEASUREMENTS ; ECOSYSTEM RESPIRATION ; GRAZING SYSTEMS ; CLIMATE-CHANGE ; CO2 FLUXES ; MODEL ; TEMPERATURE
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	MDPI
WOS记录号	WOS:000498267500061
资助机构	National Key Research and Development Program of China ; Chinese Academy of Sciences Strategic Priority Research Program ; Young Scientists Fund ; Major International (Regional) Joint Research Project ; Startup Program of Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130437]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Yang, Meng; Yu, Guirui
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Univ Edinburgh, Sch Geosci, Edinburgh EH9 3FF, Midlothian, Scotland 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Nanjing Forestry Univ, Coll Biol & Environm, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 21003, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Meng,Yu, Guirui,He, Nianpeng,et al. A Method for Estimating Annual Cumulative Soil/Ecosystem Respiration and CH4 Flux from Sporadic Data Collected Using the Chamber Method[J]. ATMOSPHERE,2019,10(10):23.
APA	Yang, Meng,Yu, Guirui,He, Nianpeng,Grace, John,Wang, Qiufeng,&Zhou, Yan.(2019).A Method for Estimating Annual Cumulative Soil/Ecosystem Respiration and CH4 Flux from Sporadic Data Collected Using the Chamber Method.ATMOSPHERE,10(10),23.
MLA	Yang, Meng,et al."A Method for Estimating Annual Cumulative Soil/Ecosystem Respiration and CH4 Flux from Sporadic Data Collected Using the Chamber Method".ATMOSPHERE 10.10(2019):23.