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| 外来杂草薇甘菊种群土壤种子库动态 | |
| 引用本文： | 张炜银,李鸣光,臧润国,昝启杰,王伯荪.外来杂草薇甘菊种群土壤种子库动态[J].武汉植物学研究,2005,23(1):49-52. |
| 作者姓名： | 张炜银 李鸣光 臧润国 昝启杰 王伯荪 |
| 作者单位： | 1. 中山大学生命科学学院,广州,510275;中国林科院森林生态环境与保护研究所,北京,100091 2. 中山大学生命科学学院,广州,510275 3. 中国林科院森林生态环境与保护研究所,北京,100091 4. 广东内伶仃福田国家级自然保护区管理局,深圳,518040 |
| 基金项目： | 中国林科院重点项目(2002ZD01)，广东省林业科技重点攻关项目(2000-01)，深圳市科技局项目(200001080)。 |
| 摘 要： | 研究了内伶仃岛不同群落中薇甘菊土壤种子库动态。结果表明，在薇甘菊土壤种子库中，上层(0～3cm)土壤种子库密度显著高于下层(3～5cm)，从地表向下随着深度的增加，活力种子逐渐减少，幼苗主要由上层土壤中的种子萌发而成。群落所处的演替阶段影响薇甘菊种群的开花结实，从而影响到薇甘菊种子的产生和种子库的储量。处于演替后期的群落中种子库储量下降。 |
| 关 键 词： | 薇甘菊 土壤种子库 动态 |
| 文章编号： | 1000-470X(2005)01-0049-04 |
| 收稿时间： | 2004-4-8 |
| 修稿时间： | 2004-9-1 |
Dynamics of Seeds Bank of Mikania micrantha Populations |
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| ZHANG Wei-yin,LI Ming-guang,ZANG Run-Guo,ZAN Qi-Jie,WANG Bo-Sun.Dynamics of Seeds Bank of Mikania micrantha Populations[J].Journal of Wuhan Botanical Research,2005,23(1):49-52. | |
| Authors: | ZHANG Wei-yin LI Ming-guang ZANG Run-Guo ZAN Qi-Jie WANG Bo-Sun |
| Institution: | 1. School of Life Sciences, Zhongshan University, Guangzhou 510275, China; 2. Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China; 3. Guangdong Neilingding Futian National Nature Reserve, Shenzhen 518040, China |
| Abstract: | Dynamics of soil seed bank of exotic weed Mikania micrantha populations in three communities in Neilingding Island were studied. The results showed that densities of soil seed bank in upper layer soil were higher than that in lower layer soil. With the increasing of soil depth, vigor seed decreased. Seedlings mainly came from the seeds in upper layer soil. Seed production and soil seed bank of the three populations of M. micrantha were different due to different succession stage of the three communities. Density of seed bank in community in later succession stage was lower than that of in early succession stage of community. |
| Keywords: | Mikania micrantha Soil seed bank Dynamic |
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