秦岭火地塘林区油松和华山松林的空间分布格局及碳储量与碳密度研究

Carbon storage and carbon density of Pinus tabulaeformis and Pinus armandii forests at Huoditang forest region in Qinling Mountain

利用火地塘林区森林资源清查资料估算油松和华山松林的C储量和C密度,并用GIS软件Citystar 4.0对这两种森林类型的空间分布特性进行分析。结果表明,油松和华山松林的总C储量分别为0.0018 TgC和0.0510 TgC,且人工林的C储量和C密度均大于天然次生林。在森林空间分布上,油松林主要分布在海拔1800m以下,华山松在林区中部的整个海拔范围内均有分布,人工林主要分布在沿公路一侧的地段。

The spatial distribution, carbon storage and carbon density of Pinus tabulaeformis and Pinus armandii were studied by using the forest inventory data of Huoditang forest region in 1990 and Citystar 4.0 of GIS software. The results show that the total carbon storages of Pinus tabulaeforrnis and Pinus arrnandii are 0.0018TgC and 0.0510TgC, respectively. Mean carbon densities are 7.6694MgC/hm^2 and 38.9080MgC/hm^2, respectively. The values of carbon storage and carbon density of artificial forest of Pinus tabulaeforrnis and Pinus arrnandii are higher than those of the natural forests. All of these relates to the forest-type and age grade. The results also show that Pinus tabulaeforrnis forests mainly distribute below the altitude of 1800m and Pinus arrnandii forests in the middle part of Huoditang region on all the elevation. The artificial forests of Pinus tabulaeforrnis and Pinus arrnandii most distribute along the road.