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Mar 9, 2022 · Decomposition rate of soil organic matter was estimated using the Cotton-strip Assay method (Tiegs et al., 2013). Strips of Fredrix-brand unprimed 12-oz. heavyweight cotton fabric (2.5 cm × 8 cm; Style #548) were placed 5 cm below the ground surface at 60 plots concurrently with a Maxim Integrated DS1921G Thermocron iButton temperature logger, on 13 May 2015.
- Temperature and soil organic matter decomposition rates ...
The response of soil organic matter (OM) decomposition to...
- Temperature and soil organic matter decomposition rates ...
Nov 25, 2021 · Soil organic matter: C2.2H2.2O → 2.2C4+ + H2O + 9e– + 0.2H+ (2.2) Inputs from plants and microbes are respired to CO 2 based on oxidation as shown in Equation 1.3. But the rate at which respiration occurs is dependent on ecosystem properties, microbial biomass and diversity, and nutrient availability.
The decomposition of organic matter is dictated by the environmental conditions it is subject to. In warm and humid tropical rainforests, decomposition rates are often accelerated, evidenced by the fact that only 10% of rainforest nutrients are found in the soil, whereas 75% of nutrients are found in trees (Urry et al., 2021).
Jan 20, 2021 · The soil organic matter (SOM) is a complex comb ination of living. organisms, fresh organic residues, actively decomposing material, and. stabilized organic matter (otherwise known as humus). Gen ...
- Litter Quality
- Environment, Climate Factors, and Soil Property
- Decomposer Communities in Soil
- Plant Species Composition and Diversity
The physical quality and chemical composition of leaves vary tremendously among plant species (Perez-Harguindeguy et al. 2000) and have a major influence on the properties and functioning of forest ecosystems (Giebelmann et al. 2013; Parson et al. 2014), i.e., the proper functioning of forest ecosystem is usually explained by the biochemical and ph...
As Table 4 shows, further to the chemical component of the soil, the physical structure, which indirectly controls the temperature and humidity, affect the leaf litter decomposition in the soil (Taylor et al. 1989; Aravena et al. 2002; Rawat and Nautiyal 2009). For example, the degree of litter decomposition is highly influenced by the organic fore...
The decomposer communities in the soil are extremely diverse and have different functional capabilities (Schinner 1996; Crawford 1988). As Table 5 shows, the soil fauna plays great roles in conditioning the litter and stimulating microbial action, whereas soil microbes are the main drivers of the decomposition processes (Coleman and Crossley 1996)....
The rate of decomposition of one species might be affected by neighboring species (Melo et al. 2013). Compared to monoculture, mixed species decompose faster, which indicate the weaker positive non-additive effect in mixtures. This also implies that in some monoculture species, the strongly lignified leaf tissue of monoculture species could hamper ...
- Mekonnen Giweta
- mekohaile9@gmail.com
- 2020
Its speed is determined by three major factors: soil organisms, the physical environment and the quality of the organic matter (Brussaard, 1994). In the decomposition process, different products are released: carbon dioxide (CO 2 ), energy, water, plant nutrients and resynthesized organic carbon compounds.
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Jul 9, 2011 · The response of soil organic matter (OM) decomposition to increasing temperature is a critical aspect of ecosystem responses to global change. The impacts of climate warming on decomposition dynamics have not been resolved due to apparently contradictory results from field and lab experiments, most of which has focused on labile carbon with short turnover times.
