对位于福建省和浙江省8 个地区39 个村庄的乡村人居林4 种林型(庭院林、道路林、水岸林和游憩林)的树木结构特征进行了调查和分析。结果表明:两省的乡村人居林共有乔木61 科130 属201 种,共有灌木34 科52 属76 种;福建省乡村人居林中乔木种类较为丰富;浙江省乡村人居林中灌木种类较为丰富。4 种林型中,庭院林树种数最多,道路林树种数最少;组成庭院林的乔木树种和单株数均最多,而组成道路林的乔木树种及单株数均最少;组成庭院林和游憩林的灌木树种和单株(丛)数均较多,组成水岸林的灌木树种及单株(丛)数最少。在福建省和浙江省乡村人居林中,常绿树种、乡土树种和2003 年以前种植的树种株数较多,分别占两省乡村人居林树木总株数的71. 05%、85. 57%、61. 20%和65. 95%、76. 02%、61. 43%;栽植截干和管护截干株数均较少,但浙江省乡村人居林中栽植截干和管护截干的株数均多于福建省。福建省乡村人居林中乔木的胸径、树高、冠幅和枝下高的均值均明显大于浙江省,而两省灌木的地径、树高、冠幅和枝下高的均值差异较小。福建省的游憩林及浙江省的水岸林中乔木的胸径最大,而福建省的水岸林及浙江省的庭院林中灌木的地径最大;福建省乡村人居林中胸径10. 0 cm以上的乔木所占比例高于浙江省,其中福建省的4 种林型中胸径在30. 0 cm 以上的乔木树种的平均胸径、种类数及株数均高于浙江省。两省乡村人居林中频度最高的10 个树种明显不同,仅香樟[Cinnamomum camphora (L.)Presl]共存于两省所有林型中。

Structure characteristics of tree species in four forest types (courtyard, road, water front and recreational forests) of village human habitat forest of 39 villages of 8 regions in Fujian Province and Zhejiang Province were investigated and analyzed. The results show that there are 201 species arbors belonging to 130 genera in 61 families and there are 76 species shrubs belonging to 52 genera in 34 families, in which, arbor species of village human habitat forest in Fujian Province is richer, while shrub species of that in Zhejiang Province is richer. Among the four forest types, number of tree species in courtyard forest is the most, and that in road forest is the least. Numbers of species and individuals of arbors in courtyard forest are the most while those in road forest are the least, and numbers of species and individuals (clump) of shrubs in courtyard and recreational forests are more while those in water front forest are the least. The individual numbers of evergreen, native tree species and tree species planting before 2003 are more, with the percentages of 71. 05%, 85. 57%, 61. 20% and 65. 95%, 76. 02%, 61. 43% of total individual number in village human habitat forest of Fujian Province and Zhejiang Province, respectively. And individual number of cutting off stems during planting and management is less in two provinces, but that in Zhejiang Province is more than that in Fujian Province. The average DBH, tree height, crown width and height under branch of arbors in Fujian Province are obviously bigger than those in Zhejiang Province, but the average ground diameter, tree height, crown width and height under branch of shrubs have a little difference between two provinces. Arbor DBH of recreational forest in Fujian Province and of water front forest in Zhejiang Province is the biggest, and ground diameter of shrubs of water front forest in Fujian Province and of courtyard forest in Zhejiang Province is the biggest. The ratio of arbors with DBH above 10. 0 cm in Fujian Province is higher than that in Zhejiang Province, in which average DBH, numbers of species and individuals of arbors with DBH above 30. 0 cm in the four forest types of Fujian Province are bigger than those of Zhejiang Province. The top ten tree species with higher frequency are obviously different, only Cinnamomum camphora (L.) Presl is existed in all forest types of village human habitat forest in two provinces.