摘要
了解当前高校存留山地森林植物群落多样性现状,揭示坡度对植物多样性的影响机制,以仲恺农业工程学院存留山地森林为例,进行不同坡度植被群落调查。采用无人机航拍,依据获取的影像和数字高程模型(DEM)数据进行坡度分级,植被群落样方的坡度分为4个等级,即Ⅰ级(0°~5°]平坡、Ⅱ级(5°~15°]缓坡、Ⅲ级(15°~25°]斜坡、Ⅳ级(25°~35°]陡坡。结果显示,仲恺存留山地植物共有161种,分属于72科130属;4种不同坡度乔灌层的物种丰富度依次为:缓坡>斜坡>陡坡>平坡;4种不同坡度草本层物种丰富度依次为:平坡>斜坡>缓坡>陡坡;不同坡度乔灌草3层的重要值差异不显著。
This study aims to understand the current status of plant community diversity in the remaining mountain forests of universities through surveys and investigations and to reveal the impact of slope gradients on plant diversity.The remaining mountain forests of Zhongkai University of Agriculture and Engineering were taken as an example to investigate the vegetation communities on different slopes.The UAV aerial photography was used to classify the slope according to the obtained images and digital elevation model(DEM)data.The slope gradients were divided into four levels based on the plot samples:Level I(0°-5°],Level II(5°-15°],Level III(15°-25°],and Level IV(25°-35°].The results show that there are a total of 161 plant species belonging to 72 families and 130 genera in the Zhongkai remaining mountain forest.The species richness of the tree and shrub layers ranked among the highest to the lowest as follows:gentle slope,moderate slope,steep slope,and flat slope.The species richness of the herbaceous layer ranked among the highest to the lowest as follows:flat slope,moderate slope,gentle slope,and steep slope.There were no significant differences in the importance values of the tree,shrub,and herbaceous layers across different slope gradients.
作者
李志飞
梁品航
叶有华
黄婉婷
方蕴仪
LI Zhifei;LIANG Pinhang;YE Youhua;HUANG Wanting;FANG Yunyi(College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong 510225,China)
出处
《林业与环境科学》
2023年第4期94-104,共11页
Forestry and Environmental Science
基金
仲恺青年学者科研启动资金项目(KA180581314)
国家自然科学基金面上项目(31971498)
广州市科技计划项目(201707010226)
广东省自然教育基地建设项目(D122202D4)
南雄国土空间生态修复规划项目(ZPSG2022ZB002)
深圳土壤种子库项目(D12120234)。
关键词
仲恺存留山地
坡度
植物群落
物种多样性
Zhongkai reserved mountains
slope
plant community
species diversity
