Seasonal variations in leaf litter substrate-induced respiration and metabolic quotient in a warm temperate broad-leaved forest
Seasonal variations in leaf litter substrate-induced respiration and metabolic quotient in a warm temperate broad-leaved forest
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暖温带阔叶林凋落物基质诱导的呼吸和代谢商的季节变化
DOI：
10.1080/13416979.2019.1642979
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发表时间：
2019
影响因子：
1.5
通讯作者：
Kominami Yuji
中科院分区：
文献类型：
--
作者：
Sato Kai;Ataka Mioko;Dannoura Masako;Kominami Yuji
季节性变化的微生物生物量和代谢商内的凋落物层和微生物介导的机制，造成季节性变化的暖温带森林凋落物异养呼吸尚未确定。我们的目的是阐明基质诱导呼吸（SIR）作为微生物生物量的指标和基础呼吸SIR（BR/SIR）的比例作为一个相对的措施，在凋落物层中的微生物群落的代谢状态的季节性变化，并调查微生物介导的机制，导致凋落物异养呼吸的季节性变化。我们收集了完整的落叶层（LL）和<1厘米的凋落物碎片（FL）的凋落物层内的1年内，每月的基础上。SIR随季节温度变化而变化。此外，SIR在分解初期与C/N比呈负相关，当C/N比小于30时与C/N比呈正相关。BR/SIR在LL和FL下降分解进行-可能是由于微生物群落的演替。此外，季节性滞后凋落物异养呼吸在该网站是相似的SIR，它是在春季高于秋季在类似的温度下，这可能是受到消耗的可用碳的微生物分解进行动员阶段。我们的研究结果表明，这些研究应该整合微生物群落的评估，以更好地了解微生物介导的异养呼吸过程。
Seasonal variations in microbial biomass and metabolic quotient within the litter layer and the microorganism-mediated mechanisms causing seasonal variation in litter heterotrophic respiration in warm temperate forests have yet to be determined. We aimed to elucidate seasonal variations in substrate-induced respiration (SIR) as an index of microbial biomass and the ratio of basal respiration to SIR (BR/SIR) as a relative measure of the metabolic status of a microbial community in the litter layer and to investigate the microorganism-mediated mechanisms causing seasonal variation in litter heterotrophic respiration. We collected samples of unfragmented leaf litter (LL) and <1-cm litter fragments (FL) within the litter layer on a monthly basis over a 1-year period. SIR varied in accordance with seasonal temperature changes. Additionally, SIR showed a negative relationship with the C/N ratio in the early decomposition phase and a positive relationship when the C/N ratio was less than 30. BR/SIR in both LL and FL decreased as decomposition proceeded – possibly resulting from succession in the microbial community. Moreover, seasonal hysteresis in litter heterotrophic respiration at the site was similar for SIR; it was higher in spring than in autumn at the similar temperature, which may have been affected by the depletion of available carbon for microorganisms as decomposition proceeded in the mobilization phase. Our findings suggest that studies such as these should integrate assessments of the microbial community to better understand the microorganism-mediated heterotrophic respiration process.
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影响因子：
4.9
作者：
Lindahl, BO;Taylor, AFS;Finlay, RD
通讯作者：
Finlay, RD
影响因子：
9.7
作者：
BEARE, MH;NEELY, CL;HARGROVE, WL
通讯作者：
HARGROVE, WL
影响因子：
2
作者：
Osono, T;Takeda, H
通讯作者：
Takeda, H
DOI：
--
发表时间：
2007
期刊：
Journal of forest research 12・1
影响因子：
--
作者：
Kaneko;S.
通讯作者：
S.
日本中部京都府南部阔叶次生林的地上生物量和净初级生产力
DOI：
--
发表时间：
2003
期刊：
--
影响因子：
--
作者：
Y. Goto;Y. Kominami;T. Miyama;K. Tamai;Y. Kanazawa
通讯作者：
Y. Kanazawa