浙江缙云公益林生物量及固碳释氧效益

Biomass and carbon fixation with oxygen release benefits in an ecological service forest of Jinyun County,China

根据浙江省缙云县117个公益林固定小班监测数据,在推算不同群落类型(松林、杉木Cunnunghamia lanceo-lata林、阔叶林、针阔混交林、毛竹Phyllostachys edulis林和灌木林等6种群落类型)生物量的基础上,估算了公益林植被碳储量与碳密度,并通过碳税法、工业制氧法对缙云县公益林固碳释氧效益进行了分析。结果表明:缙云县公益林生物量现存总量为282.73×104t,单位生物量为93.21 t.hm-2,杉木林单位生物量最高(102.61 t.hm-2),阔叶林次之(100.93 t.hm-2),灌木林最低(21.76 t.hm-2);公益林平均植被碳密度为47.37 t.hm-2;固碳释氧总量为38.59×104t.a-1,总价值4.07亿元.a-1。对缙云县公益林建设提出了一些意见和建议。

A detailed investigation of biomass in six types of forest communities（pine,Chinese fir,broadleaf,coniferous and broadleaf mixed,Phyllostachys edulis,and scrub growth forests） for 117 permanent sample plots was conducted.Carbon storage and density,carbon fixation,and oxygen release and benefit of the public service forest vegetation for the carbon tax of Jinyun County were evaluated and estimated using the Industrial Oxygen Generation Method.Results showed that the total existing biomass for the public service forests was 282.73 ×104 t with an average biomass of 93.21 t·hm-2.The Chinese fir forest had the highest community biomass（102.61 t·hm-2） followed by the broadleaf forest（100.93 t·hm-2）,whereas the scrub growth had the lowest with 21.76 t·hm-2.The average carbon density for public service forest vegetation was 47.37 t·hm-2,and carbon fixation and oxygen release totaled 38.59 ×104 t·a-1 for a total value of 407 million yuan·a-1.Opinions and suggestions for the construction of public service forests in Jinyun County.