scholarly journals Season dynamics of carbon use efficiency and its influencing factors in the old-growth Abies fabri forest in Gongga Mountain, western Sichuan, China

2020 ◽  
Vol 44 (11) ◽  
pp. 1127-1137
Author(s):  
Shu-Miao SHU ◽  
Wan-Ze ZHU ◽  
Fei RAN ◽  
Shou-Qin SUN ◽  
Yuan-Yuan ZHANG ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Old Growth ◽  
Western Sichuan ◽  
Gongga Mountain ◽  
Carbon Use Efficiency ◽  
Abies Fabri ◽  
Use Efficiency

Review on carbon use efficiency of plants and microbes and its influencing factors

2019 ◽  
Vol 39 (20) ◽  
Author(s):  
吴建平 WU Jianping ◽  
王思敏 WANG Simin ◽  
蔡慕天 CAI Mutian ◽  
吴彬 WU Bin
Keyword(s):  
Influencing Factors ◽  
Carbon Use Efficiency ◽  
Use Efficiency

scholarly journals Carbon use efficiency in mycorrhizas theory and sample calculations

1994 ◽  
Vol 128 (1) ◽  
pp. 115-122 ◽  
Author(s):  
P. B. TINKER ◽  
D. M. DURALL ◽  
M. D. JONES
Keyword(s):  
Carbon Use Efficiency ◽  
Use Efficiency

Warming affects seasonal dynamics of microorganisms and reduces the N storage capacity of soil microbes in winter

2021 ◽  
Author(s):  
Philipp Gündler ◽  
Alberto Canarini ◽  
Sara Marañón Jiménez ◽  
Gunnhildur Gunnarsdóttir ◽  
Páll Sigurðsson ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Growth Rates ◽  
Seasonal Dynamics ◽  
Soil Microbes ◽  
Storage Capacity ◽  
Ambient Conditions ◽  
Soil Warming ◽  
Carbon Use Efficiency ◽  
Use Efficiency ◽  
C And N

<p>Seasonality of soil microorganisms plays a critical role in terrestrial carbon (C) and nitrogen (N) cycling. The asynchrony of immobilization by microbes and uptake by plants may be important for N retention during winter, when plants are inactive. Meanwhile, the known warming effects on soil microbes (decreasing biomass and increasing growth rates) may affect microbial seasonal dynamics and nutrient retention during winter.</p><p>We sampled soils from a geothermal warming site in Iceland (www.forhot.is) which includes three in situ warming levels (ambient, +3 °C, +6 °C). We harvested soil samples at 9 time points over one year and measured the seasonal variation in microbial biomass carbon (Cmic) and nitrogen (Nmic) and microbial physiology (growth and carbon use efficiency) by an <sup>18</sup>O-labelling technique.</p><p>We observed that Cmic and Nmic peaked in winter, followed by a decline in spring and summer. In contrast growth and respiration rates were higher in summer than winter. The observed biomass peak at lower growth rates, suggests that microbial death rates must have declined even more than growth rates. Soil warming increased biomass-specific microbial activity (i.e., growth, respiration, and turnover rates per unit of microbial biomass), prolonging the period of higher microbial activity found in summer into autumn and winter. Microbial carbon use efficiency was unaltered by soil warming. Throughout the seasons, warming reduced Cmic and Nmic, albeit with a stronger effect in winter than summer and restrained winter biomass accumulation by up to 78% compared to ambient conditions. We estimated a reduced microbial winter N storage capacity by 45.5 and 94.6 kg ha<sup>-1</sup> at +3 °C and +6 °C warming respectively compared to ambient conditions. This reduction represents 1.57% and 3.26% of total soil N stocks, that could potentially be lost per year from these soils.</p><p>Our results clearly demonstrate that soil warming strongly decreases microbial C and N immobilization when plants are inactive, potentially leading to higher losses of C and N from warmed soils over winter. These results have important implications as increased N losses may restrict increased plant growth in a future climate.</p>

Divergent responses of terrestrial carbon use efficiency to climate variation from 2000 to 2018

2021 ◽  
pp. 103709
Author(s):  
Chengcheng Gang ◽  
Zhuonan Wang ◽  
Yongfa You ◽  
Yue Liu ◽  
Rongting Xu ◽  
...  
Keyword(s):  
Climate Variation ◽  
Terrestrial Carbon ◽  
Carbon Use Efficiency ◽  
Use Efficiency

scholarly journals The role of alternative oxidase in modulating carbon use efficiency and growth during macronutrient stress in tobacco cells

2005 ◽  
Vol 56 (416) ◽  
pp. 1499-1515 ◽  
Author(s):  
Stephen M. Sieger ◽  
Brian K. Kristensen ◽  
Christine A. Robson ◽  
Sasan Amirsadeghi ◽  
Edward W. Y. Eng ◽  
...  
Keyword(s):  
Alternative Oxidase ◽  
Tobacco Cells ◽  
Carbon Use Efficiency ◽  
Use Efficiency
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