摘要
【目的】明确滇池湖滨区外来植物的分布格局及其主要人类活动影响因素,为管理外来植物提供数据支撑,更好地保护滇池生态系统。【方法】采用样方法和线路调查相结合的方式得到外来植物的分布信息,通过聚类分析和逐步回归分析等探究外来植物丰富度、密度与人类活动影响因素和乡土植物之间的关系。【结果】(1)滇池湖滨区外来植物的丰富度和密度分布格局基本一致;东、北两岸的外来植物丰富度相对较高,西、南两岸相对较低。各湖滨湿地公园外来植物的种类差异性较大,特别是晋宁南滇池国家湿地公园、古滇精品湿地公园、海东湿地公园与其他湖滨湿地公园的外来植物组成差别最大。(2)湖滨湿地公园的面积是影响外来植物丰富度和密度的主要因子。(3)外来植物丰富度与乡土植物丰富度呈正相关性。(4)典范对应分析结果表明,3个排序轴解释外来植物在滇池湖滨区物种组成变异的59.87%,湖滨湿地公园的主要道路长度、交通密度、面积是决定外来植物空间分布格局的主要变量。【结论】人类活动影响滇池湖滨区外来植物的空间分布,在乡土植物丰富度高的地区,外来植物的丰富度也较高,对外来植物进行管控的同时,也要防范由于人类活动造成外来植物增加的风险。
【Aim】The purpose of this study is to clarify the distribution pattern of exotic plants in the lakeside area of Dianchi and its main human activity influencing factors,to provide data support for the management of exotic plants in the region,to prevent them from becoming invasive species,and to better protect the Dianchi ecosystem.【Method】A combination of sample method and line survey was used to obtain information on the distribution of exotic plants.The relationships between the abundance and density of exotic plants and the factors influenced by human activities and native plants were explored by cluster analysis and stepwise regression analysis.【Result】(1)The distribution patterns of the richness and density of exotic plants in the lakeside area of Dianchi were basically the same;the richness of exotic plants was relatively high on the east and north shores,and relatively low on the west and south shores.The variability of exotic plants in each lakeside wetland park was large,especially the largest differences in the composition of exotic plants between Jinning South Dianchi National Wetland Park,Gudian Fine Wetland Park,Haidong Wetland Park and other lakeside wetland parks.(2)The size of the lakeside wetland park was the main factor influencing the abundance and density of exotic plants.(3)The abundance of exotic plants was positively correlated with the abundance of native plans.(4)The results of the canonical correspondence analysis showed that the three ordination axes explained 59.87% of the variation in species composition of exotic plants in the lakeside area of Dianchi.Length of major roads,traffic density and area of lakeside wetland parks were the main variables determining the spatial distribution pattern of exotic plants.【Conclusion】Human activities affected the spatial distribution of exotic plants in the lakeside area of Dianchi.In areas with a high abundance of native plants,the abundance of exotic plants was also high.While controlling exotic plants,it is also necessary to guard
作者
张红丽
郑成洁
潘曲波
王艳
ZHANG Hongli;ZHENG Chengjie;PAN Qubo;WANG Yan(College of Landscape Architecture and Horticulture,Southwest Forestry University,Kunming,Yunnan 650224,China;College of Art and Design,Southwest Forestry University,Kunming,Yunnan 650224,China)
出处
《生物安全学报》
CSCD
北大核心
2023年第3期255-262,共8页
Journal of biosafety
基金
国家自然科学基金项目(31760234)。
关键词
滇池
湖滨区域
外来植物
分布格局
影响因素
Dianchi Lake
lakeside area
exotic plants
distribution pattern
influencing factors
