摘要
以伏牛山区栓皮栎天然次生林为研究对象,探索了碳密度大小及空间变化规律,为伏牛山区栓皮栎天然次生林碳密度估算和合理经营提供理论基础。应用生物量异速生长模型确定栓皮栎天然次生林乔木层碳密度及其空间变化规律。结果表明:(1)乔木层碳密度随坡位上升而增大,下坡碳密度平均为83.875 1 t/hm^(2),中坡为93.402 7 t/hm^(2),上坡为101.182 4 t/hm^(2)。不同营养器官碳密度差异显著,其中树干碳密度约占46.8%,树叶碳密度仅占2.8%。不同坡向,阳坡碳密度大于阴坡,南坡与北坡碳密度最大相差可达42.5 t/hm^(2)。(2)在海拔400~1000 m,伏牛山区栓皮栎天然次生林碳密度随海拔升高而增大,最大平均碳密度出现在900~1000 m,但垂直变化不显著,这可能与海拔区间不大有关。伏牛山区,栓皮栎在海拔1000 m以下是建群种,碳密度随着海拔升高而增加。受立地环境、树种特性等因素影响,阳坡碳密度大于阴坡。
In this study,the carbon density size of Quercus variabilis natural secondary forest in Funiu mountainous were explored,in order to provide theoretical basis for estimating carbon density and reasonable management of Quercus variabilis natural secondary forest in Funiu mountainous.The allometric biomass equation was used to determine carbon density and its spatial variation.The results show that:①The carbon density of tree layer increased with the increase of slope position.The average carbon density were as follows:83.8751t/hm^(2),93.4027 t/hm^(2) and 101.1824 t/hm^(2).There were significant differences in carbon density of different nutrient organs,of which trunk accounted roughly for 46.8%,while leaf only accounted for 2.8%.The carbon density on sunny slopes was higher than that on shady slopes in different slope position,with a difference of up to 42.5 t/hm^(2) between south slope and north slope.②Between 400 and 1000 m above sea level,the carbon density of Quercus variabilis natural secondary forest in Funiu mountainous increased with the increase of altitude.The elevation range of highest carbon density was 900~1000 m,but the vertical change was not significant,which might be related to the narrow altitude range.In the Funiu Mountain,Quercus variabilis is a constructive species below an altitude of 1000m,whose carbon density increases with increasing altitude.The carbon density on sunny slopes is higher than that on shaded slopes due to the factors such as site environment and tree species characteristics.
作者
陈晨
王亚楠
刘光武
陈德成
Chen Chen;Wang Yanan;Liu Guangwu;Chen Decheng(Henan Forestry Vocational College,Luoyang 471002,Henan,China)
出处
《绿色科技》
2024年第8期49-52,共4页
Journal of Green Science and Technology
基金
栎类次生林质量精准提升技术研究(编号:YLK202201)
河南林业职业学院校内科研项目(编号:YLYK2203)。
关键词
栓皮栎
天然次生林
碳密度
伏牛山区
Quercus variabilis
natural secondary forest
diameter class
carbon density
Funiu mountain
