闽浙地区乡村庭院树种的结构特征比较

Structural Characteristics of Trees in Country Courtyard in Fujian and Zhejiang Province

在闽浙两省各选择4个县(区)14个村庄,进行庭院树种的结构特征比较分析,结果表明:福建、浙江乡村庭院绿化以常绿、乡土树种为主;福建省庭院树种比浙江省的更为丰富,科、属、种数分别比浙江高出6.4%、18.8%、21.0%;两省5a前种植的乔木平均占82.5%,且浙江的比福建的高14.6%,近5a新植的灌木占79.3%,且浙江新植灌木比福建高出16.5%;两省乡村庭院树种栽植截干和管护截干的比例都很小;两省庭院乔木胸径平均为11.6cm、灌木地径平均为4.2cm;两省频度最高的前10个树种中,柿树、桃、枇杷、桂花4个树种同时出现。

A survey was conducted to compare structural characteristics of trees in country courtyard of 14 villages of four counties （regions） in Fujian and Zhejiang Province. Results show that evergreen and native tree species are dominant in the country courtyard in Fujian and Zhejiang. The tree species in the country courtyard of Fujian are more abundant than those of Zhejiang,and the numbers of family,genus,and species are 6.4%,18.8%,and 21.0% higher,respectively. Arbors planted five years ago in the two provinces occupied 82.5% of the total of arbor trees,and the arbor proportion of Zhejiang was 14.6% higher than that of Fujian. Shrubs panted in recent five years occupied 79.3% of the total of shrub trees,and the shrub proportion of Zhejiang was 16.5% higher than that of Fujian. The proportions of trees that the leafy top was cut off during planting and management are small in the two provinces. The average diameter at breast height of arbors was 11.6cm and the basal diameter of shrubs was 4.2cm. Among the top ten tree species with high frequency in the two provinces,the species of Diospyros kaki,Amygdalus persica,Eriobo trya japonica and Osmanthus fragrans coexist.