Effects of carbon turnover time on terrestrial ecosystem carbon storage

Effects of carbon turnover time on terrestrial ecosystem carbon storage
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碳周转时间对陆地生态系统碳储量的影响

DOI:
10.5194/bg-14-5441-2017
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发表时间:
2017-12
期刊:
影响因子:
4.9
通讯作者:
Luo Yiqi
Luo Yiqi
中科院分区:
地球科学2区
文献类型:
--
作者:
Yan Yaner;Zhou Xuhui;Jiang Lifeng;Luo Yiqi

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抽象的。碳周转时间是决定气候变化条件下植物库、土壤库和陆地碳汇碳储量的关键因素。然而,碳周转时间对生态系统碳储量的影响还没有得到很好的探讨。在这项研究中,我们比较了生态系统和土壤的平均碳周转时间(MTTs),研究其气候变化,然后量化的空间变化,生态系统碳储量随时间的变化,在C周转时间和/或净初级生产力(NPP)。结果表明,基于总初级生产力的生态系统平均MTT(GPP; MTTEC_GPP = Cpool/GPP,25.0 ± 2.7年)短于土壤MTT(MTTsoil = Csoil/NPP,35.5 ± 1.2年)和基于NPP的生态系统平均MTT(MTTEC_NPP = Cpool/NPP,50.8 ± 3年; Cpool和Csoil分别指生态系统或土壤碳储量)。在生物群落尺度上,温度是MTTEC的最佳预测因子(R2 = 0.77,p
Abstract. Carbon (C) turnover time is a key factor in determining C storage capacity in various plant and soil pools as well as terrestrial C sink in a changing climate. However, the effects of C turnover time on ecosystem C storage have not been well explored. In this study, we compared mean C turnover times (MTTs) of ecosystem and soil, examined their variability to climate, and then quantified the spatial variation in ecosystem C storage over time from changes in C turnover time and/or net primary production (NPP). Our results showed that mean ecosystem MTT based on gross primary production (GPP; MTTEC_GPP =  Cpool/GPP, 25.0 ± 2.7 years) was shorter than soil MTT (MTTsoil =  Csoil/NPP, 35.5 ± 1.2 years) and NPP-based ecosystem MTT (MTTEC_NPP =  Cpool/NPP, 50.8 ± 3 years; Cpool and Csoil referred to ecosystem or soil C storage, respectively). On the biome scale, temperature is the best predictor for MTTEC (R2 =  0.77, p
DOI: 10.1016/j.agrformet.2006.02.005
发表时间: 2006-04
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发表时间: 1994-07
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