摘要
通过对沈阳市建成区城市树木的调查分析发现:沈阳市的各土地类型中的树木分布不均,其中,被调查的256块样地中每公顷物种小于或等于5种的样地有113块,占总调查样地的44.14%,每公顷小于或等于10株的样地共43块,占总样地的16.80%;利用树种多度重要性排序及累积贡献率获得了不同土地类型中的主要树种;多个生物多样性指数表明,公园性质的绿地树种多样性最高,企事业单位用地与居住区用地次之,街道类用地较低,而商业金融用地最低;并对沈阳市的树种发展提出建议。
Trees in established areas of Shenyang city were investigated and analyzed. The results indicated that: trees distributed unevenly in various land types. Among 256 plots investigated, there were 113 plots in which number of species per hectare were less than or equal to 5, accounting for 44.14% of the total; there were 43 plots in which number of species per hectare were less than or equal to 10, accounting for 16.80% of the total. Major tree species in different land types were selected out by means of order of amount importance and cumulated contribution rates. Multi-indices of biodiversity showed that, biodiversity of trees in park-like greenbelts was highest, lands occupied by enterprises, institutions and residential areas took the second place, streets were relatively lower, and land for commercial and financial purposes were lowest. Suggestions on expansion of tree species in Shenyang city were put forward.
出处
《辽宁林业科技》
2004年第3期1-4,共4页
Liaoning Forestry Science and Technology
基金
国家自然科学基金(30270250)
中国科学院引进国外杰出人才项目(KOTCE-03971003)
中国科学院沈阳应用生态研究所创新项目(C12MC-SCXMS013)等资助项目
关键词
建成区
土地类型
多样性指数
丰富度指数
established areas, land types, index of diversity, index of richness
