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选取盐城5种城市绿地:杨树林、油菜地、苗圃、公园绿地和草坪,于2011年春季开展了大型土壤动物群落的生物多样性研究。结果显示,密度-类群指数(density-group index,DG)、群落复杂性指数(complexity index,C)与Shannon-Wiener指数(H’)等α多样性在苗圃、公园绿地和杨树林中均具有较高水平,在草坪和油菜地的大型土壤动物群落生物多样性水平较低,DG指数与C指数显著线性相关(P<0.01,n=5)并对H’有较为一致的校正效果。采用β多样性(Jaccard群落相似性系数)为基础的系统聚类结果认为杨树林、苗圃和公园绿地群落相似,草坪和油菜地群落相似。研究结果认为,大型土壤动物群落的生物多样性与绿地生境特征的复杂程度相关,绿地中树木的分布情况可能是影响大型土壤动物群落生物多样性的重要因素,这可为城市绿地规划设计提供参考。
Yancheng five kinds of urban green space: Poplar, rape, nursery, park green and lawn, in the spring of 2011 to carry out large-scale soil animal community biodiversity research. The results showed that α diversity such as density-group index (DG), complexity index (C) and Shannon-Wiener index (H ’) were higher in nursery, parkland and poplar The biomass of macro soil fauna in the lawn and rape fields was lower, and the DG index was significantly and linearly correlated with the C index (P <0.01, n = 5) and had a more consistent calibration effect on H ’. The systematic clustering based on β-diversity (Jaccard community similarity coefficient) suggested that the poplar, nursery and park greenbelt communities were similar, and the grass and rapeseed communities were similar. The results showed that the biodiversity of macro-fauna community was related to the complexity of the habitat characteristics of green land. The distribution of trees in green land may be an important factor affecting the biodiversity of macro-faunal community, which may provide reference for urban green space planning and design .