论文部分内容阅读
火地塘林区地处秦岭南坡中段,是中国暖温带向亚热带气候的过渡带。林区森林主要为天然次生林,树木种类丰富并具有明显的垂直分异性。准确估算森林碳储量在研究全国乃至全球碳平衡中起着重要的作用。笔者基于生物量的回归方程,估算该林区主要森林类型碳储量和碳密度的大小,并运用GIS软件Citystar(4.0)进行数据的空间分析。结果显示:不同树种随海拔高度呈垂直地带性分布。华山松和红桦的分布范围广,且碳储量大小明显高于其它三种类型的;锐齿栎、油松主要分布于中低海拔地带;华北落叶松的平均碳密度值最大;锐齿栎和红桦的平均碳密度接近但低于华北落叶松的;油松和华山松的平均碳密度接近且较低。
Huoditang Forest is located in the middle of the southern slope of Qinling, China is a transitional zone of warm temperate to subtropical climate. Forests in the forest area are mainly natural secondary forests with rich tree species and obvious vertical differentiation. Accurate estimation of forest carbon stocks plays an important role in studying the national and even global carbon balance. Based on the regression equation of biomass, the author estimates the size of carbon stocks and carbon densities of the main forest types in this forest area, and uses the GIS software Citystar (4.0) to do the spatial analysis of the data. The results showed that different tree species distributed vertically with altitude. Pinus armandi and Betula platyphylla distribute widely, and the carbon storage is obviously higher than the other three types. Quercus variabilis and Pinus tabulaeformis mainly distribute in the middle and lower altitudes; Larix principis-rupprechtii has the highest average carbon density; And Betula platyphylla were closer to but lower than that of Larix principis-rupprechtii. The average carbon density of Pinus tabulaeformis and Pinus armandii was close and low.