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应用干烧法对华北地区主要森林类型的 8个乔木建群种和 1 0个灌木树种不同器官的有机含碳率进行了测定 ,同时利用生物量标准地资料对其中的 7个乔木树种的林分平均含碳率进行了分析 .8种乔木及 1 0种灌木的器官平均含碳率分别为辽东栎 0 475 0、白桦 0 51 2 5、山杨 0 4880、椴树 0 476 4、油松 0 51 0 5、侧柏 0 50 1 0、华北落叶松 0 51 5 8、红皮云杉 0 51 1 8,1 0种灌木 0 4897;7个乔木树种林分的平均含碳率分别为 ,辽东栎 0 476 1、白桦 0 50 0 8、山杨0 485 9、油松 0 50 3 0、侧柏 0 50 5 3、华北落叶松 0 50 97、红皮云杉 0 51 1 1 .各树种器官含碳率的种内变动系数在1 49%～ 6 32 %之间 ;器官含碳率的种间变动系数在 2 1 5 %～ 7 48%之间 .针叶树种器官的平均含碳率普遍比阔叶树种平均高 1 6 %～ 3 4% ,相应的针叶林分的平均含碳率也高于阔叶林
The dry matter method was used to determine the organic carbon content of eight tree species and 10 shrub species in different forest types in North China. At the same time, the biomass of seven tree species The average carbon content of the eight species of trees and 10 shrubs were respectively 0 475 0, 0 51 2 5, 0 4880, 0 4764, 0 51 0 5, Arborvitae 0 50 1 0, Larix principis-rupprechtii 0 51 5 8, red-spruce 0 51 1 8,1 0 shrubs 0 4897. The average carbon sequestration rates of the seven tree species were, Quercus liaotungensis 0 476 1, Betula platyphylla 0 50 0 8, Populus euphratica 0 485 9, Pinus tabulaeformis 0 50 3 0, Platycladus orientalis 0 50 5 3, Larix principis-rupprechtii 0 50 97, Picea koraiensis 0 51 1 1. The intraspecific variation coefficient of organ carbon content was between 1 49% and 6 32%, and the inter-species variation coefficient of organ carbon content was between 21 5% and 7 48%. The average carbon content of coniferous organs was common Than the broad-leaved trees an average of 16% ~ 34%, the corresponding coniferous forest is also higher than the average carbon content of broad-leaved forest