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DOI10.1088/1748-9326/ab70bb
Estimating site-specific optimum air temperature and assessing its effect on the photosynthesis of grasslands in mid- to high-latitudes
Chang, Qing1; Xiao, Xiangming1; Wu, Xiaocui1; Doughty, Russell1; Jiao, Wenzhe2; Bajgain, Rajen1; Qin, Yuanwei1; Wang, Jie1
2020-03-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2020
卷号15期号:3
文章类型Article
语种英语
国家USA
英文摘要

The effect of air temperature on photosynthesis is important for the terrestrial carbon cycle. The optimum air temperature for photosynthesis is one of the major parameters in data-driven and process-based photosynthesis models that estimate the gross primary production (GPP) of vegetation under a changing climate. To date, most models use the biome-specific optimum air temperature (Topt-b) parameter. Towhat degreewill the site-specific optimumair temperature (Topt-s) affectGPP simulation results remains unclear. In this study, we estimated Topt-s by usingGPP data from11 grassland eddy flux tower sites (GPP(EC)) and satellite vegetation indices (NDVI and EVI). We found that Topt-s parameter values estimated from EVI have good consistency with those from GPPEC at individual sites. Wealso evaluated the effects of site-specific and biome-specific optimum air temperature parameters on grassland photosynthesis. The results showed that the use of Topt-s in the Vegetation Photosynthesis Model improved to various degrees in both daily and annual GPP estimates in those grassland flux tower sites. Our results highlight the necessity and potential for the use of Topt-s in terrestrial GPP models, especially in those situations with large temperature variation (heatwave and cold spill events).


英文关键词eddy flux tower sites gross primary productivity EVI vegetation productivity model
领域气候变化
收录类别SCI-E
WOS记录号WOS:000521169000001
WOS关键词GROSS PRIMARY PRODUCTION ; NET PRIMARY PRODUCTION ; INDUCED CHLOROPHYLL FLUORESCENCE ; USE-EFFICIENCY MODEL ; PRIMARY PRODUCTIVITY ; TERRESTRIAL GROSS ; CARBON ; VEGETATION ; CLIMATE ; SATELLITE
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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/279230
专题气候变化
作者单位1.Univ Oklahoma, Ctr Spatial Anal, Dept Microbiol & Plant Biol, Norman, OK 73019 USA;
2.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA
推荐引用方式
GB/T 7714
Chang, Qing,Xiao, Xiangming,Wu, Xiaocui,et al. Estimating site-specific optimum air temperature and assessing its effect on the photosynthesis of grasslands in mid- to high-latitudes[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(3).
APA Chang, Qing.,Xiao, Xiangming.,Wu, Xiaocui.,Doughty, Russell.,Jiao, Wenzhe.,...&Wang, Jie.(2020).Estimating site-specific optimum air temperature and assessing its effect on the photosynthesis of grasslands in mid- to high-latitudes.ENVIRONMENTAL RESEARCH LETTERS,15(3).
MLA Chang, Qing,et al."Estimating site-specific optimum air temperature and assessing its effect on the photosynthesis of grasslands in mid- to high-latitudes".ENVIRONMENTAL RESEARCH LETTERS 15.3(2020).
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