濒危植物长柄双花木赣浙群落的物种多样性研究  

The species community diversity of the endangered plant Disanthus cercidifolius var. longipes in Jiangxi and Zhejiang Province

作　　者：谢国文[1] 徐惠明[1] 李象钦 郑毅胜[1] 滕婕华 田雨浓[1] 靳晓东[1] 李海生[3] 

机构地区：[1]广州大学生命科学学院,广东广州510006 [2]广西壮族自治区中国科学院广西植物研究所,广西桂林541006 [3]广东第二师范学院生物与食品工程学院,广东广州510303

出　　处：《广州大学学报（自然科学版）》2016年第4期33-38,共6页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学基金资助项目(31270259;31540069);全国大学生"挑战杯"资助项目和创新资助项目

摘　　要：对江西井冈山、官山、军峰山、三清山和浙江莲花山6个样地的长柄双花木（Disanthus cercidifolius var.longipes）所在群落物种多样性进行了研究.结果表明,群落中植物区系组成种类丰富,共有80科170属283种;群落乔木层优势种突出;灌木层以长柄双花木、鹿角杜鹃（Rhododendron latoucheae）占优势.6个群落的Simpson指数为0.443 6～0.949 2,Shannon-wiener指数为1.459 0～3.642 2,Pielou均匀度指数为0.359 3～0.759 8;官山样地的Simpson指数、Shannon-wiener指数及Pielou均匀度指数值都是最大,而井冈山最小;从平均值来看,物种丰富度指数、物种多样性指数及均匀度指数值都是灌木层﹥乔木层.频度分析结果显示,长柄双花木群落的频度图谱均不符合Raunkiaer标准频度定律,仅官山2个样地在图的形状上较为相似.各群落均受到一定程度的人为破坏,应通过就地保护、人工栽培等措施加强保护.The species community diversity of Disanthus cercidifolius var. longipes in 6 plots from Jinggang Mountain, Guanshan Mountain, Junfeng Mountain, Shanqing Mountain in Jiangxi Province and Lianhua Mountain in Zhejiang Province were studied. The result shows that the community floristic composition is abundant. There are 283 species belonging to 170 genera and 80 families. The species in the tree layer is simplex, and the dominant species is prominent. D. cercidifolius var. longipes and Rhododendron latoucheae are dominant species in the shrub layer. Simpson index range is about 0. 443 6 - 0. 949 2, Shannon-Wiener index range is about 1. 459 0 - 3. 642 2 and Pielou evenness index range is about 0. 359 3 - 0. 759 8 of the six communities with D. cercidifolius var. longipes. Guanshan Mountain Plot has the highest indexes, while Jinggang Mountain Plot has the lowest. On the average, the species richness index, the species diversity index and the species evenness index are in the order of shrub layer 〉 tree layer. Frequency analysis indicates that the frequency spectra of the communities does not comply with the law of Raunkiaer standard frequency. Only two quadrats from Guanshan Mountain are similar in the shape of the graph. All the communities are subject to artificial destruction. The protection should be strengthened with some measures, such as in situ conservation and artificial cultivation, etc.

关 键 词：长柄双花木 群落 物种多样性 丰富度 均匀度 

分 类 号：Q948.15[生物学—植物学]