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近年来,我国人工林面积不断增加,人工林在我国陆地森林生态系统碳收支中的作用越来越大。以克拉玛依人工杨树林和荒漠灌木林为研究对象,通过样地调查,对生物量及碳储量、碳密度、碳汇功能等进行了估算。通过实测数据及模型分析,得出以下基本结论:1该人工杨树林单位面积生物量平均为51.30 t·hm-2;碳密度平均为24.59 t·hm-2,碳储量为73 715.41 t,说明其发挥着一定的碳汇作用。2与荒漠环境下灌木林对比结果表明,克拉玛依人工杨树林单位面积生物量增加了50.56 t·hm-2,碳密度增加了24.26 t·hm-2,碳储量增加了72 726.14 t,表明在干旱区荒漠环境下通过造林来增加区域陆地植被碳汇,进而达到碳减排的目的是可行的。
In recent years, the area of plantations in China has been continuously increasing. The plantation has played an increasingly important role in the carbon budget of terrestrial forest ecosystems in China. Taking poplar and desert shrubbery in Karamay as the research object, biomass, carbon storage, carbon density and carbon sequestration were estimated by sampling plots. Based on the measured data and the model analysis, the following basic conclusions are drawn: 1 The average biomass per unit area of poplar plantation is 51.30 t · hm-2, the average carbon density is 24.59 t · hm-2 and the carbon storage is 73 715.41 t, Play a certain role in carbon sinks. The results showed that the biomass per unit area increased by 50.56 t · hm-2, the carbon density increased by 24.26 t · hm-2 and the carbon storage increased by 72 726.14 t, indicating that in the arid region In the desert environment, it is feasible to increase the carbon sequestration of terrestrial vegetation through afforestation so as to achieve the goal of reducing carbon emissions.