摘要
在上海市选取 2 0个公园和 2个化工厂设立 2 2个样点 ,对地面藓类植物进行野外样方调查、标本鉴定和数据统计 .基于 75种记录的藓类植物及其盖度数据 ,应用双向指示种分析法 (TWINSPAN)和除趋势对应分析 (DCA)分析其分布格局 .结果表明 ,上海市地面藓类植物可聚类为 3个样点组 ,样点组 1为市中心 2个公园和 2个化工厂 ,共有藓类 2 3种 ,总盖度最小 (2 1 2 9% ) ;样点组 2为部分市中心公园和外围公园 ,共有藓类 4 4种 ,总盖度 37 94 % ;样点组 3主要为外围公园和市郊公园 ,共有藓类 4 9种 ,总盖度为4 9 6 6 % .结果反映了藓类植物分布与不同生境 ,环境污染及人为干扰有一定相关性 .
The mosses on the floor of 22 sites at 20 main parks and 2 chemical plants in Shanghai city were investigated and sampled.Based on 75 recorded moss species and their coverage,Two-way Indicator Species Analysis (TWINSPAN) and Detrended Correspondence Analysis (DCA) were used to analyze their distribution patterns.The results showed that the study sites could be identified as three groups.Group 1 included two chemical plants and two parks at the center of the city,with 23 moss species and the smallest total coverage of 21.29%;group 2 included part of the parks at the center of the city and surrounding areas,with 44 moss species and total coverage of 37.94%;and group 3 mainly included the parks at surrounding areas and suburbs of the city,with 49 moss species and total coverage of 49.66%.The results reflected a certain correlation of the distribution of moss species with different habitats and polluted and disturbed environments in the city.
出处
《应用生态学报》
CAS
CSCD
2004年第10期1785-1791,共7页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目 ( 3 0 170 0 76
3 0 3 70 111)
上海高校科学发展重点基金资助项目 ( 0 1D0 3 2
0 2D2 47)
