杭州市城乡乔木物种的多样性  

Dynamics of Arbor Biodiversity along An Urban-rural Gradient in Hangzhou City

作　　者：赵兴征[1,2] 朱国营[3] 王根轩[2] 

机构地区：[1]中国环境科学研究院,北京100012 [2]浙江大学生命科学学院,杭州310029 [3]浙江工商大学,杭州310005

出　　处：《城市环境与城市生态》2011年第5期29-31,共3页Urban Environment & Urban Ecology

基　　金：国家自然科学基金重点项目(90102015);环保公益性行业科研专项(201009021)

摘　　要：沿杭州市区至临安农村取1 km宽75 km长样带调查乔木物种多样性。调查结果表明市区本土树种保存较好,树种数量达到20余种,农村物种丰富度极低,树种数量仅有10种左右。从物种丰富度指数可以看出市区物种最为丰富,丰富度指数最高达4.343,郊区物种丰富度指数最低,为1.303,农村物种丰富度指数较郊区有所上升,但仍显著低于市区,保持在2～3之间。Shannon-Weiner指数趋势与物种丰富度指数一致,最高值出现在市区,其次是农村和郊区。而Pielou均匀度指数和Simpson优势度指数没有明显规律。Arbor species diversity along an urban-rural gradient was investigated in Hangzhou City,Zhejiang Province.The results showed that the species richness at the rural and the suburban area was very low,which was less than 10 species,while at the urban area,there was much higher biodiversity,the arbor species richness was up to 20 species,which was about 2 times of that at the rural area.Species richness index showed that the urban area had the most rich species,species richness index was up to 4.343,the suburban area had the least richness index of 1.303,while in the rural area it was between 2~3.The tendency of Shannon-Weiner index was the same as species richness index.However,there was no significant order of Pielou index and Simpson index among the urban,suburban and rural areas.

关 键 词：城市化 乔木 物种多样性 环境梯度 

分 类 号：X176[环境科学与工程—环境科学]