生物多样性 ›› 2017, Vol. 25 ›› Issue (11): 1202-1212.DOI: 10.17520/biods.2016336

• 研究报告: 植物多样性 • 上一篇    下一篇

新疆山地森林乔木和草地草本植物个体大小分布特征

李利平1,*(), 安尼瓦尔·买买提2, 努尔巴依·阿布都沙力克3, 努尔佳玛丽·沙尔巴依3, 万华伟4   

  1. 1 中国科学院遥感与数字地球研究所, 北京 100101
    2 中国科学院新疆生态与地理研究所, 乌鲁木齐 830011
    3 新疆大学资源与环境科学学院绿洲生态教育部重点实验室, 乌鲁木齐 830046
    4 环境保护部卫星环境应用中心, 北京 100094;
  • 收稿日期:2016-11-24 接受日期:2017-10-23 出版日期:2017-11-20 发布日期:2017-11-20
  • 通讯作者: 李利平
  • 基金资助:
    国家自然科学基金(81503183, 81560660, 41561013, 41273098)

Plant body size patterns of mountainous trees and grassland herbs in Xinjiang region, China

Liping Li1,*(), Anwar Mohammat2, Nurbay Abdusalih3, Nurjamal Sarbay3, Huawei Wan4   

  1. 1 Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101
    2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011
    3 Key Laboratory of Oasis Ecology of Ministry of Education, College of Resources and Environmental Sciences, Xinjiang University, Urumqi 830046
    4 Satellite Environment Center, Ministry of Environmental Protection, Beijing 100094
  • Received:2016-11-24 Accepted:2017-10-23 Online:2017-11-20 Published:2017-11-20
  • Contact: Li Liping

摘要:

个体大小是植物重要的特征之一, 目前其受环境因子的影响还不十分清楚。基于样地实际调查数据, 我们分析了新疆山地森林乔木和草地草本植物个体大小的特征(统称为乔木和草本, 分别以平均胸径和平均株高表示), 并在物种和区域尺度, 分析了其与分布区特征和植物多样性的关系。研究发现: (1)在物种尺度上, 森林植被中乔木物种的个体大小与其分布区特征正相关, 即分布范围较广的乔木倾向于个体更大; 草地植被中草本植物的特征与此类似; (2)在区域尺度上, 乔木平均个体越大, 区域植物平均分布区越小, 反之亦然; 草本植物的平均个体大小与区域植物分布区特征无显著相关性; (3)在区域尺度上, 森林乔木和草地草本植物的个体大小与植物多样性均呈正相关关系, 即森林乔木和草地草本植物平均个体较大时, 其区域多样性更高。

关键词: 植物个体大小, 植物分布区, 物种尺度, 区域尺度, 植物多样性, 新疆

Abstract:

Species body size is an important trait, however, currently the correlations of body size with range size and species richness are still not very clear, especially for plants. With plant distribution and plot investigation data in the Xinjiang region of China, we explored plant body size patterns and tested the relationship between plant body size and range size, both at the species and regional scale. Further, the relationship of plant body size and plant richness was also tested at the regional scale. In this study, tree body size of forests was indicated using the average diameter at breast height (DBH), and the herbaceous plant body size of grasslands was indicated using the average height based on our plot investigation. Regional plant body size was the average value of all measured plants distributed in each grid cell (0.1° × 0.1°). We found that: (1) At the species scale, tree body size was positively correlated with range size characteristics, i.e., trees that spread wider were normally larger in size than those in narrower ranges; herb body size displayed a similar pattern with lower correlation coefficients; (2) At the regional scale, a region with larger average tree body size tended to have lower regional average plant range size and vice versa; the regional herb body size of grasslands did not significantly correlate with the regional average plant range size; (3) At the regional scale, tree body size and herb body size both positively correlated with regional plant richness. We concluded that at the species and regional scale, for different vegetation, the plant body size may have different patterns and correlate differently with range size characteristics.

Key words: plant body size, plant range size, species scale, regional scale, plant richness, Xinjiang