Study On The Distribution Of Carbon Density For The Main Forest Types In Daxing’an Mountain

Taken Larch forest, Betula platyphylla forest, coniferous leaf mixed forests, broad leaf mixed forests and coniferous leaf and broad leaf mixed forest in Heilongjiang province Daxing’an mountain as example, the research uses the carbon content percentage for the sample trees with repetition measurement for the1008sample plots in2010. Based on the ArcGIS platform, Kriging method was used to analyze the carbon content density of the5main forest types and its spatial distribution characteristics. At the same time, the annual change of the carbon density for the5main forest types was estimated. Combined with the repetition measurement data in Daxing’an mountain in2005-2010, the particle drown dynamics picture based on the spatial interpolation method and analyzed the spatial distribution regularity of carbon density dynamic change for the5main forest types.The change range of the carbon density for the Larch forest was1.2-101.1T/hm2and the average value was37.0T/hm2. The change range of the carbon density for the Betula platyphylla forest was0.1-86.8T/hm2and the average value was31.2T/hm2. The change range of the carbon density for the coniferous leaf mixed forest was0.8-72.7T/hm2and the average value was38.6T/hm2.As for broad leaf mixed forests, the change range of the carbon density was0.03-92.1T/hm2with the average value of36.1T/hm2. Meanwhile, the change range of the carbon density for coniferous leaf and broad leaf mixed forest was2.4-100.5T/hm2with the average value of42.8T/hm2.The carbon density of aboveground layer, underground layer for the different altitudes classes had the same regularity that it got the maximum value within the range of1001-1100m and the minimum value within the range of100-200m. Moreover, the distribution regularity at the different slopes was semi-Shady-slope> Shady-slope> Sunny slope> semi-Sunny slope> non-slope. The maximum value in the different slope position were35.2T/hm2、8.7T/hm2and44.0T/hm2, with the minimum value of20.9T/hm2、5.8T/hm2and26.8T/hm2at the plane slope. And the distribution regularity at the different slope gradient was the same with the maximum value and minimum value at the steep slope and plane slope respectively. The carbon storage of Larch forest, Betula platyphylla forest, coniferous leaf mixed forests, broad leaf mixed forests and coniferous leaf and broad leaf mixed forest in Heilongjiang province Daxing’an mountain were1.0456T/hm2·year、1.2982T/hm2·year、1.183T/hm2·year、1.5437T/hm2·year and1.3194T/hm2·year.