宁夏贺兰山天然油松林碳储量和碳密度

Carbon Storage and Carbon Density of Natural Pinus tabulaeformis Forest in Helan Mountain in Ningxia

以宁夏贺兰山天然油松林为研究对象,通过样地调查,并结合贺兰山自然保护区森林调查资料,对其生物量转换因子、碳储量和碳密度进行了估算,通过实测数据及模型分析,结果表明:贺兰山天然油松林生物量转换因子平均值为0.89;对各组分生物量与蓄积量关系进行了拟合分析,建立了各组分生物量蓄积量相关方程,地上生物量随蓄积的增加而增加,其线性关系可表示为B=0.815 1V+5.835 6;按照材积源法估算出宁夏贺兰山天然油松林碳储量为1.172 62万t,碳密度为36.42 t/hm2,在贺兰山油松分布密度大的大水沟、苏峪口、马莲口管理站,油松林碳储量分别为:0.397 26、0.773 58、0.001 81万t。

The biomass expansion factor（BEF）,forest carbon storage and carbon density of natural Chinese pine（Pinus tabulaeformis） forest in Helan Mountain in Ningxia were estimated through field survey,combining with the forest inventory data provided by Helan Mountain Nature Reserve.Model analysis shows that the average BEF of the natural Chinese pine forest in Helan Mountain is 0.89.A regression equation of biomass and volume of different organs of trees was established through the fitting analysis.The above-ground biomass（B） increases with increasing volume（V）,which can be expressed as B=0.8151V＋5.8356.The carbon storage and carbon density of the natural Chinese pine forest in Helan Mountain in Ningxia are estimated to be 11726.2t and 36.42t/hm2,respectively.The carbon storages of the three main distribution areas in Helan Mountain,Dashuigou,Suyukou and Maliankou,are 3972.6,7735.8,18.1t,respectively.