永康市森林碳储量估算研究

Estimation of forest carbon storage in Yongkang County

对永康市森林碳储量进行估算,研究表明:永康市森林植被总的生物量为3155.24×10^(3)t,单位面积生物量为53.10 t·hm^(-2),总的碳储量为1577.62×10^(3)t,碳密度为26.55 t·hm^(-2),其中:乔木层生物量为3063.71×10^(3)t,占总生物量的97.10%。马尾松林作为永康市的优势树种,碳储量为1275.02×10^(3)t,显著高于其他类型,占乔木层碳储量的83.23%,是乔木层的主要碳库;永康市近熟林、中龄林在碳储中起主要作用,各龄组碳储量占比从高至低依次为近熟林>中龄林>成熟林>幼龄林>过熟林;碳密度从高至低依次为过熟林>成熟林>近熟林>中龄林>幼龄林,体现出随着林龄的增长,森林植被质量不断提高,碳储能力有所增强;天然林碳储量为1222.38×10^(3)t,占总的碳储量的79.81%,幼龄林、中龄林、近熟林的碳储量均为天然林大于人工林。

In this study,the forest carbon storage in Yongkang City was estimated.The research showed that the total biomass offorest vegetationin Yongkang County was 3155.24×10^(3)t,the biomassper unit area was 53.10 t·hm^(-2),the total carbon storage was 1577.62×10^(3)t,and the carbon density was 26.55 t·hm^(-2).The tree layer biomass was 3063.71×10^(3)t,which accounted for 97.10%in the total biomass.Masson pine forest was the dominant tree species in Yongkang county with carbon storage 1275.02×10^(3)t.It was significantly higher than other types,accounting for 83.20%of the carbon storage of the tree layer.It was the main carbon reservoir of the tree layer.Near-mature forest and middle-aged forest in Yongkang County played an important role in carbon storage.From high to low,the proportion of carbon storage in all ages was in the order as near-mature forest>middle-age forest>mature forest>young forest>over-mature forest.The order of carbon density was over-mature forest>mature forest>near-mature forest>middle-aged forest>young forest.It showed that with the growth of the forest age,the quality and the carbon storage capacity of forest improved continuously.The carbon storage of natural forest in Yongkang County was 1222.38×10^(3)t,accounting for 79.81%of the total carbon storage.The carbon storage of young,middle-aged,and near-mature forest in natural forests was higher than that of plantation.