摘要
以恢复生态学为理论基础,采用生态系统定位研究方法,从群落学角度系统研究了在青海湖湖东高寒沙地建立的几种不同人工植被恢复样地的植物群落特征,比较分析了植被恢复过程中不同人工植物群落的物种多样性和功能多样性.研究发现:青海湖湖东沙地人工植物可划分为“沙蒿-沙棘群落”“沙蒿-乌柳群落”和“沙棘-沙蒿群落”3个群落;人工群落的盖度与灌木层盖度变化趋势一致;实施多片层植物混合定植的人工群落,无论在物种多样性还是功能性状多样性方面均优于其他群落,且较短的定植时间就可达到较高的恢复水平.研究结果可为高寒沙漠地区的植被重建和生态系统恢复提供理论支持,特别是对高寒沙漠防风固沙工程建设中的种苗优选和人工恢复群落的资源优化配置提供了一定的科学指导.
Plant community characteristics in several artificial revegetation areas in sandy areas on the east shore of Qinghai Lake were studied based on restoration ecology,species diversity and functional diversity of different artificial communities in revegetation using ecosystem localization research method.Three types of artificial plant communities were identified:the‘Artemisia-Hippophae’community,the‘Artemisia-Salix’community and the‘Hippophae-Artemisia’community.The artificial community cover was found to have the same trend of change as shrub layer cover.Artificial community,where a higher recovery level could be achieved with mixed planting of multiple layers,showed better species diversity and functional trait diversity than other communities.These findings provide theoretical support for re-vegetation and ecosystem restoration in alpine desert areas,particularly in the selection of seedlings and optimal allocation of resources for artificial restoration communities in the construction of wind and sand control projects in alpine deserts.
作者
赵爱斌
娄安如
ZHAO Aibin;LOU Anru(College of Life Sciences,Beijing Normal University,100875,Beijing,China;Institute of Tibetan Plateau Research,Chinese Academy of Sciences,100101,Beijing,China)
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第4期653-660,共8页
Journal of Beijing Normal University(Natural Science)
关键词
人工植被
群落特征
生物多样性
群落功能多样性
青海湖
artificial vegetation
community characteristics
biodiversity
functional diversity of the community
Qinghai Lake
