浙江天台公益林生物量及涵养水源效益研究

Research on Biomass and the Efficiencies of Water Conservation in an Ecological Service Forest of Tiantai County,Zhejiang Province

根据浙江省天台县公益林固定监测小班数据,以推算包括松林、杉木林、阔叶林等6种典型森林群落的生物量为基础,估算天台县公益林涵养水源量及效益。结果表明:天台县公益林总生物量274.92万t,单位面积生物量为101.94 t·hm^(-2),其中松林的生物量最大,为208.46万t、针阔混交林的单位生物量最大,为139.15 t·hm-2;2011—2012年间天台县公益林的调蓄水量累计达1.25亿t,涵养水源效益达到10.30亿元。其中,竹林的涵养水源效益最大,其次为阔叶林、松林、针阔混交林、灌木林,最小的是杉木林。

According to the detailed investigation data of fixed sample plots, the efficiencies of water conservation of public service forest in Tiantai Country,Zhejiang Province were evaluated by calculating the biomass of six types of forest communities including pine forest, fir forest, broad-leaved forest, etc. The results showed that the total biomass storage of the public service forest in Tiantai was 274. 92 × 104 t,while average unit biomass was 101.94 t hm-2. Both the total biomass in pine forest （208.46 × 104 t） and av- erage biomass of mixed coniferous forest （ 139. 15 t hm -2 ） was the highest. The water-regulation and water-storage capacity of pub- lie service forest in Tiantai Country in 2011-2012 was 1.25 × 10s t, and cumulative water conservation efficiency was 10. 30 billion Yuan. Water conservation capacity of different forest communities decreased in the order showed as bamboo forest （ the biggest）, broad-leaved forest, pine forest, mixed coniferous forest, scrub forest, fir forest （ the smallest）.