| 引用本文: | 张凯迪，魏艳艳，龚 元，郭智娟，赵 敏.2019.浙江沿海无居民海岛植物群落物种组成及多样性[J].地球环境学报,10(1):58-68 |
| ZHANG Kaidi, WEI Yanyan, GONG Yuan, GUO Zhijuan, ZHAO Min.2019.Floristic composition and diversity of plant communities of the five nonresidential coastal islands of Zhejiang, China[J].Journal of Earth Environment,10(1):58-68 |
|
| 摘要: |
| 无居民海岛是自然资源的宝库，人类活动对无居民海岛的影响日益剧烈，掌握它们的植物群落物种组成和多样性现状有利于进行海岛植被多样性的监测和保护。本文运用植物群落生态学方法，对浙江沿海5个无居民海岛的植被物种组成及多样性进行了研究。结果如下：（1）调查区域共记录到高等植物77科，166属，226种，其中草本151种，木本植物75种。基于双向指示种分析方法（TWINSPAN）分析，将该区域植物群落分为17个类型。（2）17个群落的物种Shannon指数均在1.91 — 2.6，Pielou指数（均匀度指数）值在0.8附近浮动，Margalef指数（丰富度指数）在1.86 — 3.80，各个群落的丰富度指数与多样性指数变化趋势大体一致，与群落均匀度无明显关系。植物区系成分多样，主要为泛热带成分和北温带成分。本研究可为我国沿海无居民海岛的资源保护及其开发利用提供科学数据。 |
| 关键词: 植物群落 物种组成 物种多样性 无居民海岛 |
| DOI：10.7515/JEE182061 |
| CSTR： |
| 分类号: |
| 基金项目:国家自然科学基金项目（31100354）；上海师范大学旅游学院/上海旅游高等专科学校科研项目（KY2017-BX） |
|
| Floristic composition and diversity of plant communities of the five nonresidential coastal islands of Zhejiang, China |
|
ZHANG Kaidi, WEI Yanyan, GONG Yuan, GUO Zhijuan, ZHAO Min
|
1. College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
2. Shanghai Normal University Urban Ecology and Environment Research Center, Shanghai 200234, China
3. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
|
| Abstract: |
| Background, aim, and scope Nonresidential coastal islands are the treasure trove of natural resources, and human activities have an increasingly severe impact on nonresidential coastal islands. Mastering the current status of species composition and diversity of their plant communities is beneficial to the monitoring and protection of diversity of the island plants. Materials and methods This paper analyzes the vegetation composition and diversity of 5 uninhabited islands along the coast of Zhejiang based on the method of plant community ecology. Such as the sample method to survey plants, two-way indication method to determine the community names and quantitative description of community characteristics. Results The results are as follows: (1) A total of 77 families, 166 genera, and 226 species of advanced plants were recorded in the survey area, including 151 herbs and 75 woody plants. Based on the TWINSPAN analysis, the vegetation in this area was divided into 17 types. (2) In the 17 community, the Shannon index was between 1.91 and 2.6, the Pielou index (evenness index) was floating around 0.8, and the values of Margalef index (richness index) is ranged from 1.86 to 3.80. The comparative analysis showed that the richness index of each community is consistent with the trend of diversity index, and has no obvious relationship with community evenness. Discussion In the communities of each island, the dominant species are mainly Eurya japonica, Eurya emarginata, and Mallotus japonicus, they can be used as local characteristics of greening tree species because of their strong growth vitality. Due to the different size of the islands and the distance from the land, the plant communities of each island have different characteristics. Conclusions The flora of the nonresidential coastal islands of Wenling in Zhejiang Province is characterized by its distinctive coastal features, abundant plant resources, and mainly Eurya japonica. The distribution of seed floras is diverse, mainly the holatropical plants and north warm zone. Changes in community richness and diversity are less variable, and the evenness index is also stable at a value that does fluctuate by no more than 1.5. Recommendations and perspectives This study provides scientific data for the protection of resources and development and utilization of nonresidential islands along the coast of China. |
| Key words: plant communities species composition species diversity nonresidential islands |
