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林业科学 ›› 2002, Vol. 38 ›› Issue (4): 7-13.doi: 10.11707/j.1001-7488.20020402

• 论文及研究报告 • 上一篇    下一篇

合肥城市森林结构分析研究

吴泽民 黄成林 白林波 吴文友   

  1. 安徽农业大学森林利用学院,合肥230036
  • 收稿日期:2000-11-06 修回日期:1900-01-01 出版日期:2002-07-25 发布日期:2002-07-25

URBAN FOREST STRUCTURE OF HEFEI CITY

Wu Zemin,Huang Chenglin,Bai Linbo,Wu Wenyou   

  1. Forestry Faculty of Anhui Agricultural University Hefei230036
  • Received:2000-11-06 Revised:1900-01-01 Online:2002-07-25 Published:2002-07-25

摘要:

用样方调查方法对合肥市区23km2 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35×104 株树木,树木总生物量为31741t;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50%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497hm2 的森林,约占研究区土地面积的21%~22% ,理论上每年可从大气吸收CO212483t。

关键词: 城市森林, 结构, C平衡, 合肥

Abstract:

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 km2 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 hm2 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 hm2 of forest land at least to get 30% of forest land cover. The tree community in the study area could remove CO2 of 12483 t from atmosphere each year.

Key words: Urban forest, Structure, C balance, Hefei