延安市公园树种结构分析  

Tree Species Structure Analysis of City Parks in Yanan

作　　者：徐少亭[1] 吴云霄[1] 李志强[1] 左乐[1] 

机构地区：[1]延安大学生命科学学院,陕西延安716000

出　　处：《安徽农业科学》2009年第7期2958-2960,2967,共4页Journal of Anhui Agricultural Sciences

基　　金：延安大学2008年度大学生科技创新项目(D2008-124)资助

摘　　要：在对延安市森林公园和城市公园绿地进行调查的基础上对延安市公园绿地的树种结构进行了分析。结果表明,延安市公园绿地中共有树种40种,分属23科30属,森林公园和城市公园树种组成有很大差别,共有树种4种,树种优势科、属不明显。城市公园的树种多样性小于森林公园的多样性。群落结构简单,城市公园中仅有少数群落构成树林形式,大部分是草地上散植少量乔木和灌木,乔木和灌木的郁闭度和覆盖度小,树种的高度小于森林公园的高度。树种构成的生态习性分析结果显示,除杨家岭革命遗址公园常绿树的数量大于落叶树外,其他公园落叶树的数量均大于常绿树。公园观赏树少。Based on investigating the Forest Park and City Park in Yanan, the tree species structure of park green space in Yanan City was analyzed. The result showed that there were 40 species of trees in park green space of Yanan,which belonged to 23 families and 30 genera.The tree species composition in Forest Park and City Park had greater difference.There were only 4 common species and the superior family and genus was not apparent. The tree species diversity in City Park was less than that in Forest Park and the community structure is uncomplicated. In City Parks, there were only a small number of communities composed into the form of words. A few trees and bushes were planted dispersedly in most area of the City Parks. Those trees and bushes have low canopy density and coverage, and the height of the trees was lower than that in Forest Park. The ecological characteristics analysis of the tree species constitution showed that the amount of evergreen is larger than that of deciduous trees,except the Yang Jialing Revolutionary Site Park.The amount of deciduous trees was larger than that of evergreen in other parks. There were a few omamental trees in the parks.

关 键 词：延安市公园 树种结构 树种多样性 立体结构 物种配置 

分 类 号：S718.542[农业科学—林学]