Composition and Spatial Distribution of Soil Mesofauna Along an Elevation Gradient on the North Slope of the Changbai Mountains, China
Composition and Spatial Distribution of Soil Mesofauna Along an Elevation Gradient on the North Slope of the Changbai Mountains, China
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DOI：
10.1016/s1002-0160(15)30062-x
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发表时间：
2015-12-01
期刊：
影响因子：
5.7
通讯作者：
Wang Fubin
中科院分区：
文献类型：
--
作者：
Jiang Yunfeng;Yin Xiuqin;Wang Fubin
长白山位于中国东北部，植被类型具有明显的垂直地带性。对长白山北坡海拔780 ~ 2480 m的红松混交林、红松云杉林、云杉林、白桦林、高寒草甸和高寒半荒漠6种不同生境进行了调查，以确定：1)不同海拔下土壤中动物群落组成是否存在显著差异；Ii)不同的土壤中系动物类群对海拔的响应是否不同；iii)哪些因素影响了土壤中系动物沿海拔的空间分布。2009年春（5月）、夏（7月）、秋（9月）分别在各生境采集土壤中系动物。土壤中系动物群落至少有44个类群，以蜱螨和弹虫为主，其次为鞘翅目、双翅目幼虫和姬虫科。土壤中动物群的组成、多样性和丰度在6个生境之间存在差异。同时，各生境土壤中系动物的组成、丰度和多样性均存在显著的季节变化。分类丰富度和Shannon指数受海拔和土壤性质的影响，而丰度仅受土壤性质的显著影响。在分类群方面，生境和季节对几乎所有主要分类群的丰度都有显著影响。较多类群的丰度受土壤性质的显著影响，而土原生目、蜘蛛目等类群的丰度受海拔高度的影响。结果表明，长白山北坡土壤中系动物的组成和空间分布随海拔梯度的变化而变化，这可能与海拔梯度引起的植物群落、土壤性质和气候变化有很大关系。
The Changbai Mountains, located in northeastern China, show clear vertical zonation of vegetation types. Six different habitats, namely Pinus koraiensis mixed broad-leaved forest, Pinus koraiensis-Picea forest, spruce-fir forest, Betula ermanii forest, alpine meadow and alpine semi-desert, at elevations ranging from 780 to 2 480 m, covering almost all ecosystems on the north slope of the Changbai Mountains, were investigated to determine: i) whether or not the community composition of soil mesofauna varied significantly at different elevations; ii) if different soil mesofauna groups would respond differently to elevation and iii) which factors influenced the spatial distribution of soil mesofauna along elevation. Soil mesofauna were collected from each habitat in spring (May), summer (July) and autumn (September) of 2009. The soil mesofauna communities were comprised of at least 44 groups and were dominated by Acari and Collembola, followed by Coleoptera, Diptera larvae and Enchytraeidae. The composition, diversity and abundance of soil mesofauna varied among the six habitats. Meanwhile, significant seasonal variations were observed in the composition, abundance and diversity of the soil mesofauna in each habitat. The taxonomic richness and Shannon index were affected by elevation and soil properties, while the abundance was only significantly affected by soil properties. With regard to taxa, the habitats and seasons had significant effects on almost all the abundances of the major taxonomic groups. The abundance of more taxonomic groups was significantly influenced by the soil properties, while those of Geophilomorpha, Araneae and other taxa were affected by elevation. It is concluded that the composition and spatial distribution of the soil mesofauna varied along the elevation gradient on the north slope of the Changbai Mountains, which might be largely related to the variations of the plant community, soil properties and climate Change resulting from the elevation gradient.