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在孟加拉国吉大港林区(东经91°47’-92°15’,北纬21°45’-22°30’),利用全球定位系统和通过辨认每个样点和分层随机采样方法,估算树木有机碳贮量和不同地理位置的森林有机碳流量。结果显示:地上树木有机碳贮量,地下树木有机碳贮量和全生物有机碳含量在羯布罗香(Dipterocarpus turbinatus)林中最高(7.9,1.18和9.086t/hm2),其次分别是柚木林(Tectona grandis,5.66,0.85和6.51t/hm2),恰普拉希面包果林(Artocarpus chaplasha,2.32,0.34和2.66t/hm2),滇树菠萝林(Artocarpus lacucha)(1.97,0.29和2.26t/hm2)和木菠萝林(Artocarpus heterophyllus,1.7,0.25和2.26t/hm2)。在经纬度22°和92°地区,树木有机碳贮藏量(142.7t/hm2)最高;而在经纬度21°50’和92°2.5’地区,树木有机碳贮藏量最低。森林是树木有机碳贮量最好的资源,可以从大气中吸收大量的有机碳。因此有效地对森林进行可持续管理,可以提高森林有机碳贮藏量,有效的提高国家经济效益和促进国际环境的改善。图1表1参30。
Trees were estimated using the Global Positioning System and by identifying each sample and stratified random sampling method in the Chittagong Hill Tracts (91 ° 47’-92 ° 15 ’E and latitude 45 ° -22 ° 30’ N) Organic carbon stocks and forest organic carbon fluxes at different geographical locations. The results showed that the organic carbon storage, the underground tree organic carbon storage and the total organic carbon content were the highest (7.9,1.18 and 9.086t / hm2) in the Dipterocarpus turbinatus forest, followed by the teak (Tectona grandis at 5.66, 0.85 and 6.51 t / hm2), Artocarpus chaplasha (2.32, 0.34 and 2.66 t / hm2), Artocarpus lacucha (1.97, 0.29 and 2.26 t / hm2) and Artocarpus heterophyllus (1.7, 0.25 and 2.26 t / hm2). In latitude 22 ° and 92 °, tree organic carbon storage (142.7t / hm2) was the highest; while in latitude 21 ° 50 ’and 92 ° 2.5’, tree organic carbon storage was the lowest. Forests are the best resource for tree organic carbon stocks and can absorb large amounts of organic carbon from the atmosphere. Therefore, the effective management of the forest can improve the storage of forest organic carbon, effectively improve the national economic benefits and promote the improvement of the international environment. Figure 1 Table 1 reference 30.