摘要
用样方调查方法对合肥市区 2 3km2 范围的树木进行调查 ,并采用遥感技术分析合肥土地利用及树木分布的格局。研究区拥有 35× 10 4 株树木 ,树木总生物量为 3174 1t;同时对树木的种类组成、径阶分布、健康状况、叶面积指数等反映城市森林结构特征的各类指标进行分析。结果表明 ,10种数量最多的树木占总数的 80 % ;近 5 0 %的树木是小树 (胸径 <10cm) ;而 84 %的树木健康状况为中等以上。按照生物量及树干断面积计算 ,这些树木相当于 4 97hm2 的森林 ,约占研究区土地面积的 2 1%～ 2 2 % ,理论上每年可从大气吸收CO2 12 4
The urban forest structure of Hefei, the capital city of Anhui Province, was investigated using sample method in the paper. The results showed that in the study area of 23?km 2 in the city there are 350 thousand trees and totally 31741?t for biomass. Based on biomass or basal area, the trees were equivalent to 497?hm 2 forestland. Meanwhile the species composition, DBH classes, health condition, biomass and leaf area of the tree community for different land uses were analyzed. In the urban forest of Hefei city, 10 top species occupied almost 80% of tree individuals; almost 50 percent of trees were classified as small tree ( DBH <10?cm); most of trees (84%) had good or medium health level. For this situation, the study area had about 21%～22% of forest land cover and needed to increase 16～20?hm 2 of forest land at least to get 30% of forest land cover. The tree community in the study area could remove CO 2 of 12483?t from atmosphere each year.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2002年第4期7-13,共7页
Scientia Silvae Sinicae
基金
国家林业局项目"中国森林生态网络工程体系建设研究"资助
编号 98-11-10 -13。
