汶川地震对两种气候区植被恢复群落特征的影响
Community characteristics of vegetation restoration in 2 different climate areas of Wenchuan earthquake affected region
罗清虎 1孙凡 1吴建召 1崔羽 1林勇明 1吴承祯2
作者信息
- 1. 福建农林大学林学院,福建福州350002;福建省高校森林生态系统过程与经营重点实验室,福建福州350002
- 2. 福建省高校森林生态系统过程与经营重点实验室,福建福州350002;武夷学院生态与资源工程学院,福建南平354300
- 折叠
摘要
为了解两种气候区(半干旱干热河谷气候区和亚热带湿润季风气候区)汶川地震后植被恢复群落特征,采用野外调查和室内分析相结合的方法,分析了不同样地植被恢复群落物种组成、重要值和物种多样性的差异特征.结果表明:(1)两个气候区内乔灌草物种数量存在差异,其中亚热带湿润季风气候区1年生草本和多年生草本物种数高于干热河谷气候区,乔灌植物差异较小;受地震和人为恢复措施影响,两个气候区内未受损区和受损未治理区的草本生活型物种数较高,受损治理区则灌乔生活型物种数较高.(2)研究区各样地物种分布不均匀,尤其在受损治理区,因人为种植灌木及乔木,少数优势物种出现在样地中,物种重要值差异大.(3)研究区各样地乔灌植物香农-威纳指数为未受损区>受损治理区>受损未治理区,但草本的多样性指数在受损治理区最低,受损未治理区(自然恢复)的草本多样性指数最高.地震灾区受损治理区通过人工种植灌木及乔木丰富了物种组成,促进植物群落垂直结构的发展.
Abstract
In order to understand the characteristics of vegetation restoration community in 2 different climate zones ( semi-arid dry hot valley climate zone and subtropic humid monsoon climate zone) in Wenchuan earthquake affected region, by the field survey and analysis in the laboratory, species composition, important value and species diversity of vegetation restoration communities in different plots were analyzed.The results showed that:(1) the species number of tree, shrub, and grass had great difference between 2 climate types.Fern and non-annual herb were higher in subtropic humid monsoon climate than that in semi-arid dry hot valley except tree and shrub.As the effects of earthquake and restoration measures, arbor and shrub dominated in the destroyed and treated area which were different with undestroyed area, and destroyed and untreated area which were dominated by grass.(2) Species distribution was not even in all plots, especially in recovery area that was dominated by human-planted shrub and trees, causing the variation of important value.( 3) The Shannon-wiener index in both climate zones showed a trend of undestroyed area >destroyed and treated area >destroyed and untreated area, but the diversity index of herb was lowest in destroyed and treated area and highest in destroyed and untreated area.The survey and analysis found artificially planting shrub and arbor was helpful for species become rich in the earthquake affected area and promote the development of vertical structure of plant community.
关键词
汶川/地震灾区/植被恢复/群落特征/物种多样性Key words
Wenchuan/earthquake affected region/vegetation restoration/community characteristics/species diversity引用本文复制引用
基金项目
国家自然科学基金(41790434)
福建农林大学科技创新专项基金(CXZX2016058)
出版年
2018
国家科技期刊平台
NSTL
维普
万方数据