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【目的】提高区域范围或国家尺度上森林碳储量估算的精度,有利于监测森林系统的固碳能力。【方法】应用红外碳硫分析仪对80株新疆西伯利亚落叶松不同组分进行了含碳系数的测定,同时利用各组分实测生物量数据对平均含碳系数进行了分析。【结果】各组含碳系数分别为干材0.467 0、干皮0.485 1、树枝0.477 3、树叶0.474 3、树根0.476 8,干材及树根含碳系数因部位不同发生变化,但差异未达到显著水平,其离散系数变动范围在1%之内。【结论】西伯利亚落叶松总的含碳系数为0.476 1,干皮在各组分中含碳系数最高,干材最小;不同径阶及龄组各组分的离散系数均未超过7%。
[Objective] To improve the accuracy of estimating forest carbon stocks on a regional scale or on a national scale and to monitor carbon sequestration in forest systems. 【Method】 The carbon content of different components of 80 Siberian larch in Xinjiang was determined by infrared carbon and sulfur analyzer. At the same time, the average carbon content of each component was analyzed by the measured biomass data. 【Result】 The results showed that the carbon coefficient of each group were dry matter 0.467 0, dry skin 0.485 1, branch 0.477 3, leaf 0.474 3, and root 0.476 8. The carbon content of stem and root varied with different parts, but the differences were not significant Reached a significant level, the variation range of its discrete coefficient within 1%. 【Conclusion】 The Larix sibirica larch had a total carbon number of 0.476 1. The dry matter had the highest carbon content and the lowest dry matter in all the components. The dispersion coefficients of the components in different diameters and ages did not exceed 7%.