Abstract
Problem statement: Enhancing carbon storage in terrestrial ecosystems, especially in the forests, is a key factor in maintaining the atmosphere's carbon balance. With regard to the importance of forest in carbon sequestration, this study attempted to investigate the carbon storage potential and CO2 uptake in oak coppice stand. Approach: After combining slope, aspect and hypsometric maps, the number of land units (polygons) as well as their areas were determined. Then 60 sample trees were selected in such a way that all environmental and typological conditions were taken into account. After determining the overall weight of different parts of tree, to measure the dry weight as well as to determine the amount of biomass, different parts of tree were transformed to a kiln. The humus was collected and weighted in an area of 400 cm2 under each tree. The quantity of ash was taken away from biomass, then the amount of organic sequestrated carbon as well as that of CO2 uptake was measured. To determine the amount of carbon stored in the soil samples were extracted from the depths of 0-10 and 10-30 cm. Results: The amount of organic sequestrated carbon was 22.65 tons ha-1. The trunk, root, branch, soil, leaf and humus had the maximal amount of storage respectively. The annual carbon dioxide uptake was 5.94 tons ha-1. Conclusion: Coppice stands had massive plant coverage as well as an increase in biomass production if the destructive factors were removed from these areas.
Highlights
The universal phenomenon of global warming originates mainly from continual increase in the production of greenhouse gases such as CO2, fossil fuels consumption, forest destruction, irregular grazing of pastures, land use change and some other activities resulting in human life development[4]
The results show that Zagross (An area in the west of Iran with high mountain ranges as well as dense forests) forest can absorb 3.25 tons of Co2 ha−1
Coppice stands can have massive plant coverage as well as an increase in biomass production if the destructive factors are removed from these areas
Summary
The universal phenomenon of global warming originates mainly from continual increase in the production of greenhouse gases such as CO2, fossil fuels consumption, forest destruction, irregular grazing of pastures, land use change and some other activities resulting in human life development[4]. The density of greenhouse gases increased considerably during the period of industrial revolution, especially in the contemporary century when the concentration of carbon dioxide rose from 280 ppm before industrial revolution to 386 ppm in 2006. Carbon dioxide is one of the most important greenhouse gases that gradually increase the temperature of the Earth. Plants absorb CO2 from atmosphere and store it in their biomass during a photosynthesizing process. Some of the stored carbon is emitted into atmosphere during respiration and the difference between these two is called net primary productivity
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