浙江丽水白云山与九龙山两栖动物多样性时空分布的比较

    Spatial and Temporal Distribution of Amphibian Diversity at Baiyunshan Mountain Versus Jiulongshan Mountain in Lishui City, Zhejiang Province

    • 摘要: 两栖动物种群数量的衰退及多样性的降低越来越引起人们的关注,开展两栖动物多样性观测研究有助于物种保护。在浙江丽水白云山与九龙山各布设12条样线,覆盖溪流、农田、沟渠等生境类型,于2018年4、6、8月开展两栖动物多样性调查与动态观测。结果显示:(1)调查共记录到两栖动物1目7科20种,2个样区间物种组成存在一定差异,不同样区、生境类型及月份间优势物种并不相同;(2)皮尔森相关分析显示,在低海拔范围内,两栖动物的相对多度与气温呈负相关,与海拔呈正相关;(3)九龙山两栖动物的相对多度明显高于白云山,农田生境的相对多度明显高于沟渠生境,4和6月的物种丰富度明显高于8月,4月的相对多度明显高于8月,生境类型和月份的交互作用显著影响物种丰富度、相对多度、辛普森指数和香农-维纳指数。总之,浙江丽水白云山与九龙山两栖动物多样性存在显著的时空分布差异。

       

      Abstract: The decline of amphibian populations and their decreasing of biodiversity are attracting increasing research attention, and studies on amphibian diversity are helpful for species conservation and ecological environment monitoring. 12 sampling transects were used which covering three habitat types, i.e., stream, cropland and ditches, at Baiyunshan Mountain and Jiulongshan Mountain in Lishui, Zhejiang Province, China, to investigate and dynamically monitor amphibian diversity in April, June, and August of 2018. The following results were obtained:(1) A total of 20 amphibian species belonging to 7 families in 1 order were recorded in the two sampled areas. Species compositions differed between the two sampling areas, and the dominant species also differed between the sampling areas, between habitat types, and between three months of sampling. (2) Relative abundance of amphibians was negatively correlated with air temperature, and was positively correlated with elevation, as determined by using Pearson's correlation analysis. (3) Relative abundance was higher at Jiulongshan Mountain than at Baiyunshan Mountain, was higher on cropland than in ditches, and was higher in April than in August and species richness was higher in April and June than in August; and the interaction term of habitat type×month interaction showed a significantly effected on species richness, relative abundance, Simpson's diversity index and Shannon-Wiener index. In summary, spatial and temporal structure of amphibian diversity in Lishui of Zhejiang Province, differed significantly between Baiyunshan Mountain and Jiulongshan Mountain.

       

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