Effect Of Temperature On Soil Respiration

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Soil Respiration: The Effects of Temperature and C:N Ratio in Plant Litter
Introduction
Soil respiration is a process which results in the production of carbon dioxide and can be affected by several factors including plant litter and temperature (Biology 208 Lab Manual 2017). With increasing temperatures, the amount of carbon dioxide released during soil respiration will increase (Schlesinger and Andrews 1999). The presence of plant litter in the soil results in increased soil respiration, and results in increased rates of carbon dioxide production (Xiao et al. 2014). This experiment is looking at the effects of temperature and type of plant litter on the rate of soil respiration. For the abiotic factor, we hypothesize that increasing the temperature will positively affect soil respiration rate as it will increase the rate of metabolism of the microorganisms. Soil placed in 30°C chamber will produce more carbon dioxide than the soil placed in the 15°C chamber. For the biotic factor, decreasing the carbon:nitrogen ratio in plant litter will positively affect soil respiration rate by speeding up the rate of decomposition of the plant litter. Therefore, soil with grass will decompose faster and have higher carbon dioxide production than soil with pine needle litter. The interaction between temperature and type of plant litter indicates that soil with grass litter and in a 30°C chamber will have the highest carbon dioxide production.
Methods
The effects of temperature and
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