摘要
利用合肥市第7次森林资源清查资料,对各县(区)森林面积、生物量及其年龄结构进行统计,依据建立的不同森林类型生物量和蓄积量之间的回归方程,估算全市森林蓄积量,并根据含碳率推算森林碳储量和碳密度。结果表明:全市森林多集中在三县,以中幼林为主,森林总面积为47 983.4 hm2,蓄积量为523 239 m3,生物量为231 260.87 t,碳储量为115 630.43 t,碳密度为2.41 t/hm2;以杨类的面积最大,马尾松的生物量、蓄积量和碳储量最大;森林面积以幼龄林最大,随年龄增加而减少;中龄林的蓄积量、生物量、碳储量最高,蓄积量和生物量随年龄的增长先增加后减少;碳密度则是近熟林最高,为12.45 t/hm2,幼龄林最小,只有0.32 t/hm2。杨类在整个年龄阶段碳密度相对较大,有利于碳储存,但幼龄林较多,总的碳储量偏小,而且杨类的轮伐期较短,因此,应考虑对现有森林的抚育和管理以及后继树种的筛选,实现社会可持续发展。
Use the seventh forest resource inventory data,based on the established regression equation between forest volumes and biomass for the different forest types,the forest area,volumes,biamoss,carbon storage and carbon density were estimated in Hefei.The results showed that forest was mainly distributed in three county（Feixi county,Feidong county and Changfeng county）,with large proportion of young and middle age.The forest areas were 47 983.4 hm^2,forest volumes were 523 239 m3,forest biamass were 231 260.87 t,forest carbon stocks were 115 630.43 t and forest carbon density was 2.41 t/hm^2.The area of Populus L.and the biomass,volume and carbon storage of Pinus massoniana were the biggest.The young forest area was the biggest,as the age increased the forest area decreased.The volumes,biomass and carbon storage of middle-aged forest were the greatest,and increased firstly with increasing age and then decreased.The carbon density of near-mature forest was the highest,reaches 12.45 t/hm^2,but the carbon density of young forest was only 0.32 t/hm^2.The carbon density of Populus L.in its life was relative bigger,which was beneficial to carbon storage,but the carbon stock was smaller because the age was young and the rotation was short.Therefore,the focus on strengthening the tending and management of existing forests,selecting adapated tree in a long time was need to society sustainable development.
出处
《水土保持学报》
CSCD
北大核心
2011年第4期192-196,共5页
Journal of Soil and Water Conservation
基金
国家自然基金(31070558)
关键词
森林生物量
蓄积量
碳储量
碳密度
forest biomass
volume
carbon storage
carbon density
