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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2012 Vol.31 No.5

Variation in Body Condition Levels of Passer montanus Populations along an Urban Gradient in Beijing
Author of the article:SUO Ming-li#, ZHANG Shu-ping#*, QIN Xiao-yan, GAO Jing, ZHANG Jing-ruo, LI Hong-chang
Author's Workplace:(College of Life and Environmental Science, Minzu University of China, Beijing 100081, China)
Key Words:urban; tree sparrow; body condition; Beijing
Abstract:

Tree sparrow is a widespread species in urban and rural environments in China. Since rapid urbanization is decreasing the food resources and habitats of tree sparrows, we hypothesized that urbanization would induce a decrease in body condition levels of this species. To test this hypothesis we compared the body condition indices of tree sparrow populations in five urban and two rural habitats in Beijing and analyzed the relationship between body condition index and the degree of urbanization. Results show that the body condition indices of tree sparrow populations were strongly and negatively correlated with the degree of urbanization of the habitat. Average body condition index of sparrows from high-rise residential areas and a university campus were significantly lower than that of from rural areas, suggesting that tree sparrows living in highly urbanized areas showed lower body condition level than that of rural areas. However, the average body condition indices of birds from an urban park and bungalow residential area was not significantly different with that of birds at rural sites and differed significantly from that of birds at two of the other urban sites. Food scarcity resulted from vegetation loss in urbanization may be main reasons to explain all the results, therefore we suggest that vegetation reservation should be paid more attentions in the process of urbanization.

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