Economic valuation of carbon sequestration, O2 production and forage in Gandoman wetland
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The effective role of environmental resources in continuing the process of sustainable development and preservation of human life has led to economists focusing on the non-market roles of these resources. Awareness of the amount of benefits which are exited from the society by destroying environmental resources motivates the protection and support of these valuable natural treasures in the society. Awareness of the benefits of environmental resources requires the valuation of these resources. The aim of this study was to evaluate the economic functions of carbon sequestration, oxygen and forage production in Gandomanwetland with an area of 980 hectares with a sustainable management approach. For this purpose, a 200-meter transect was established in the representative areas of three plant types of Juncus inflexsus-Cynodon dactylon, Cyperus longus-Cladium mariscus, and Phragmites australis, and a total of 30 plots of one square meter were randomly placed along the transects. Then, in each plot, in addition to soil sampling, the percentage of canopy cover of all plant species, litter, rocks, and pebbles was estimated. Also, the aerial biomass of the plants was cut at a distance of one centimeter above the soil surface and then collected and dried in 50% of the plots. Plant carbon storage was measured using the electric furnace method and soil organic carbon was measured using the Walkley-Black method. The amount of oxygen production was also calculated based on the amount of plant dry matter. Based on the results of this research, the amount of carbon stored in the plant biomass and soil and the amount of oxygen production were determined separately by plant types. The results indicated that the annual average forage production was 14.8 tons per hectare. Also, the amount of carbon stock and oxygen produced in the whole Gandman wetland was equal to 8.9 and 22.4 tons per hectare per year, respectively. The carbon stored in the wetland soil was estimated at 554.7 tons per hectare. Therefore, the economic value of Gandman wetland per hectare per year for forage production, carbon sequestration, and oxygen production was 72728345, 9 9457140, and 11189600 Rials, respectively. The economic value of carbon stored in the soil of Gandman wetland was 589,424,220 Rials per hectare.
Language:
Persian
Published:
Iranian Journal of Range and Desert Research, Volume:27 Issue: 2, 2020
Pages:
262 to 275
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