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| 两种郁闭度华山松成熟林植物物种结构特征 | |
| 引用本文： | 曹子林,王晓丽,郭盘江,司马永康,杨桂英.两种郁闭度华山松成熟林植物物种结构特征[J].西南林学院学报,2009,29(2):1-5. |
| 作者姓名： | 曹子林 王晓丽 郭盘江 司马永康 杨桂英 |
| 作者单位： | 1. 西南林学院,环境科学与工程系,云南,昆明,650224 2. 西南林学院,资源学院,云南,昆明,650224 3. 云南省林业科学院,云南,昆明,650204 |
| 基金项目： | 云南省教育厅科学研究基金，西南林学院面上基金，西南林学院生态学校级重点建设学科项目 |
| 摘 要： | 为探讨郁闭度对植物物种结构的影响,用样方法对昆明西山弱度郁闭及中度郁闭的华山松成熟林植物物种结构特征进行研究。结果表明：因郁闭度差异,引起林分各层次优势种及其重要值、植物物种多样性指数发生变化。中度郁闭林建群种华山松的重要值为95.35,比弱度郁闭林91.75大 弱度郁闭林灌木层优势种为小铁仔、碎米花杜鹃,中度郁闭林则为小铁仔、滑丢竹和南烛,弱度郁闭林小铁仔重要值为30.20,中度郁闭林为29.08 弱度郁闭林草本层优势种为小铁仔、滑丢竹,中度郁闭林草本层优势种为小铁仔,弱度郁闭林小铁仔重要值为16.26,中度郁闭林为10.96。弱度郁闭林乔木层、灌木层物种丰富度均比中度郁闭林高,中度郁闭林草本层的物种丰富度却比弱度郁闭林大。弱度郁闭林乔木层均匀度指数、Shannon-W iener指数均比中度郁闭林高,而灌木层、草本层的均匀度指数、Shannon-W iener指数却比中度郁闭林低。中度郁闭林乔木层的生态优势度比弱度郁闭林高 而弱度郁闭林灌木层、草本层的生态优势度却比中度郁闭林高。 |
| 关 键 词： | 华山松 成熟林 郁闭度 重要值 植物物种多样性 |
Characteristics of Plant Species Structure of Pinus armandi Mature Forest with Two Different Stand Crown Closure |
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| CAO Zi-lin,WANG Xiao-li,GUO Pan-jiang,SIMA Yong-kang,YANG Gui-ying.Characteristics of Plant Species Structure of Pinus armandi Mature Forest with Two Different Stand Crown Closure[J].Journal of Southwest Forestry College,2009,29(2):1-5. | |
| Authors: | CAO Zi-lin WANG Xiao-li GUO Pan-jiang SIMA Yong-kang YANG Gui-ying |
| Institution: | CAO Zi-lin, WANG Xiao-li, GUO Pan-jiang , SIMA Yong-kang , YANG Gui-ying (1,Department of Environmental Science and Engineering, Southwest Forestry University, Kunming Yunnan 650224, China 2. Faculty of Resources, Southwest Forestry University, Kunming Yunnan 650224, China; 3. Yunan Academy of Forestry, Kunming Yunnan 650204, China) |
| Abstract: | The characteristics of plant species structure of mature forest stands of Pinus armandi with both weak and moderate canopy closure in the Xishan Mount Forest Park of Kunming were studied by means of sample-plot survey in order to find out the influence of stand canopy closure on plant species structure. The results showed that dominant plant species, whose important value of each storey and the plant species diversity changed because of the difference in canopy closure, The important value of the constructive species P. armandi in the forest stand with moderate canopy closure was 95.35, which was higher than 91.75 in the stand with weak canopy closure. The dominant species in the shrub storey of forest stand with weak closure were Myrsine africana and Rhododendron spic- iferum, whereas Myrsine africana, Sinarundinaria nitida and Lyonia ovalifolia, were the dominant species in the forest stand with moderate canopy closure. The important value of Myrsine africana in the stand with weak, moder- ate canopy closure was 30. 20 and 29.08 separately. The dominant species in the herb layer of forest stand with weak canopy closure were Myrsine africana and Sinarundinaria nitida, where the important value of Myrsine africa- na was 16. 26. Whereas the dominant species in the herb layer of forest stand with moderate canopy closure were Myrsine africana, whose important value was 10. 96. The species richness of both the arbor tree storey and the shrub layer of the forest stand with weak canopy closure forest was greater than that of in the forest with moderate canopy closure. However, the species richness of herb storey in the forest with moderate canopy closure was greater than that of the herb storey in the forest with weak canopy closure. The Shannon-Wiener index and the Pielou uni- formity index of the arbor tree storey of the forest with weak canopy closure were higher than those of the forest with moderate canopy closure, but these two indexes of shrub storey and herb layer of the forest stands with weak canopy closure w |
| Keywords: | Pinus armandi mature forest canopy cIosure important value plant species diversity |
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