多伦县樟子松人工林生物量及碳储量研究

BIOMASS AND CARBON STORAGE OF THE Pious sylvestris var. mongolica Litv. PLANTATION IN THE DUOLUN COUNTY

本文以多伦县樟子松人工林为研究对象,对樟子松生物量、碳储量、林下枯落物和土壤进行研究,结果如下。樟子松树高和胸径在监测期间的增长模型均符合线性模型,模型拟合率均大于99%。樟子松叶片、树枝、树干和根系生物量和碳储量在年度间变化显著,其中树干生物量和碳储量的年增长量最大。樟子松生物量和碳储量中叶片、树枝的生物量和碳储量所占比例随着生长年限的增加呈下降的变化趋势,而树干的生物量和碳储量所占比例则呈增加的变化趋势。樟子松林下枯落物现存量较高,碳储量为2488kg/hm2。樟子松林下土壤碳储量集中在0-25cm层,达到54.94t/hm2,其平均碳含率为1.03%。

ract： This article takes the Duolun county Pious sylvestris plantation as the object of study, to under the Pious sylvestris biomass, the carbon reserves, the forest withers and falls the thing and the soil conduct the research, the result is as follows. The Pious sylvestris tree high and DBH in monitoring during growth model are consistent with the linear model; model fitting rates are greater than 99%. The Pious sylvestris leaves, branches, trunks and root biomass and carbon storage in the annual change significantly, which stem biomass and carbon storage of year of growth quantity maximum. Biomass and carbon storage of the Pious sylvestris leaves, bran- ches of biomass and carbon storage in proportion with the increase of the growth years of declining trend, but the trunk biomass and car- bon storage proportion is increasing trend. The Pious sylvestris plantation litter biomass carbon reserve is high, 2488kg/hm2. Pious syl- vestris plantation soil carbon reserves in layer 0 -25cm, to 54.94t/hm2, the average carbon content is about 1.03%.