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当前位置: 首页 > 文章 > The impact of land afforestation on carbon stocks surrounding Tehran, Iran 林业研究(英文版) 2014,25 (1)
Position: Home > Articles > The impact of land afforestation on carbon stocks surrounding Tehran, Iran Journal of Forestry Research 2014,25 (1)

The impact of land afforestation on carbon stocks surrounding Tehran, Iran

作  者：
S Varamesh;Seyed Mohsen Hosseini;Farshad Keivan Behjou;Ebrahim Fatae
单  位：
Department of Forestry, Faculty of Natural Resources, Tarbiat Modares University, Noor, Mazandaran, Iran;Faculty of Agricultural Technology and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran;Tarbiat Modares University;Department of Environmental engineering, Ardabil Branch, Islamic Azad University, Ardabil, Ira
关键词：
carbon sequestration;afforestation;Cupressus arizonica;Fraxinus rotundifolia;Tehran;SOIL ORGANIC-CARBON;NATIVE TREE PLANTATIONS;PINE PLANTATIONS;SEQUESTRATION;MANAGEMENT;FORESTS;DEFORESTATION;PRODUCTIVITY;NITROGEN;BIOMAS
摘  要：
The city of Tehran, like many polluted metropolises of the world, has higher emissions of greenhouse gases than other cities in Iran, due to heavy consumption of fossil fuel and landuse changes. To estimate carbon sequestration in two 40 year-old stands of planted Cupressus arizonica and Fraxinus rotundifolia in degraded lands surrounding Tehran, sampling of above- and below- ground biomass, soil (at two depths of 0-15 and 15-30 cm), and leaf litter Was done by systematic random sampling. The total carbon stocks of C. arizonica and F. rotundifolia stands were respectively 328.20 and 150.69 Mg.ha(-1). The aboveground biomass with 233.16(71%) Mg.ha(-1) in C. arizonica and 88.16 (58.50%) Mg.ha(-1) in F. rotundifolia contributed the most shares to carbon sequestration. The diameter at breast height, total height, basal area, total volume, and biomass of C. arizonica were significantly (p<0.01) higher than those of F. rotundifolia. Also the depth of 0-30 cm of soil contributed between 18.29 % and 32.15 % of total ecosystem carbon, respectively. The economic value of carbon sequestration in the two stands in 2011 was calculated at 3.5 and 2.5 million dollars, respectively. Our results indicate that afforestation of the degraded land surrounding Tehran would sequester more carbon than would continuously degraded land, the current status quo. These stands can absorb atmospheric CO2 at different rates, thus tree species selection and stand development should be considered in planning future afforestation projects.

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