Study on Engineering-Material Properties and Influences of Incubated Temperatures on Soil Carbon Decomposition

The mineralization of soil carbon materials potentially alters carbon release from soil and the atmospheric carbon concentration in engineering. Despite this central role in the decomposition of soil carbon materials, few studies have been conducted on how climate warming affects this carbon emissions and then response in return back. To study this, five soils were incubated in 5, 15, 25 °C for one month. Soil shifted to warming condition slowed down the increasing rate of decomposition causing by higher temperature. Furthermore, raising the soil environment temperature to 25 °C weakened the temperature sensitivity of the decomposition of these carbon materials, and the temperature sensitivity enhanced at lower temperature. This “thermal adaptation” of carbon material would potentially slow down carbon loss which accelerated by climate change technically.

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Uncertainties related to the temperature sensitivity of soil carbon decomposition

Uncertainties in Environmental Modelling and Consequences for Policy Making - NATO Science for Peace and Security Series C: Environmental Security ◽

10.1007/978-90-481-2636-1_14 ◽

2009 ◽

pp. 317-335 ◽

Cited By ~ 3

Author(s):

Maria J. I. Briones

Keyword(s):

Soil Carbon ◽

Temperature Sensitivity ◽

Carbon Decomposition

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Thermal Adaptation of Pennisetum: Leaf Structure and Composition

Functional Plant Biology ◽

10.1071/pp9770541 ◽

1977 ◽

Vol 4 (4) ◽

pp. 541 ◽

Cited By ~ 3

Author(s):

CJ Pearson ◽

DG Bishop ◽

M Vesk

Keyword(s):

Low Temperature ◽

Temperature Sensitivity ◽

Thermal Adaptation ◽

Chloroplast Ultrastructure ◽

Lipid Phase ◽

Genotypic Differences ◽

Lipid Phase Transitions ◽

Chlorophyll Accumulation ◽

Chlorophyll Distribution ◽

Lower Temperature

Studies were made of the effects of growth temperatures and transition to colder temperature on chloroplast ultrastructure, chlorophyll accumulation, lipids and protein of two Pennisetum americanum cultivars and a P. americanum × P. purpureum biotype which differed in temperature sensitivity. All genotypes had structure and chlorophyll distribution consistent with NADP-malic enzyme C4 systems and lipid phase transitions at temperatures similar to those of other 'chilling-sensitive' plants. All accumulated less starch at low temperature and there was mobilization of starch, aggregation of thylakoids in mesophyll chloroplasts and swelling of loculi on transition from 24/19 to 18/13°C. Intolerance of Pennisetum to low temperature was clearly not due to accumulation of starch, nor were genotypic differences in temperature sensitivity related to starch. The cold susceptibility of cv. Ingrid Pearl, in contrast with the tolerance of the intraspecific and interspecific hybrids, was associated with inability to accumulate chlorophyll in the mesophyll of some leaves; fluctuations in chlorophyll a/b ratios within 5 days of transition to lower temperature; and inability to accumulate higher concentrations of soluble proteins in apparently normal leaves grown at 18/13°C. Genotypic differences in temperature sensitivity did not appear related to the physical properties of membranes, which did not change within 5 days of transition to 18/13°C.

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