Effect of landscape pattern on insect species density within urban green spaces in Beijing, China

PloS One
Zhimin SuZhiyun Ouyang

Abstract

Urban green space is an important refuge of biodiversity in urban areas. Therefore, it is crucial to understand the relationship between the landscape pattern of green spaces and biodiversity to mitigate the negative effects of urbanization. In this study, we collected insects from 45 green patches in Beijing during July 2012 using suction sampling. The green patches were dominated by managed lawns, mixed with scattered trees and shrubs. We examined the effects of landscape pattern on insect species density using hierarchical partitioning analysis and partial least squares regression. The results of the hierarchical partitioning analysis indicated that five explanatory variables, i.e., patch area (with 19.9% independent effects), connectivity (13.9%), distance to nearest patch (13.8%), diversity for patch types (11.0%), and patch shape (8.3%), significantly contributed to insect species density. With the partial least squares regression model, we found species density was negatively related to patch area, shape, connectivity, diversity for patch types and proportion of impervious surface at the significance level of p < 0.05 and positively related to proportion of vegetated land. Regression tree analysis further showed that the...Continue Reading

References

Sep 30, 2005·Proceedings. Biological Sciences·Risto K HeikkinenJuha Pöyry
Jun 10, 1994·Science·A Kruess, T Tscharntke
May 1, 1992·Ecological Applications : a Publication of the Ecological Society of America·H Ronald PulliamJianguo Liu
Jan 1, 1978·Oecologia·Stanley H Faeth, Thomas C Kane

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