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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
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Your Position :Home->Past Journals Catalog->2004 Vol.23 No.2

Geographic Distribution Change of Magpie in Sichuan Province
Author of the article:GUO Yan-shu1, ZHENG Hui-zhen2
Author's Workplace:(1. Institute of Rare Animals and Plants, China West Normal University, Nanchong, Sichuan Province 637002; 2. Library of China West Normal University)
Key Words:magpie (Pica pica); geographic distribution; disappearance; Sichuan
Abstract:Magpie (Pica pica) used to be a common bird widely distributed in Sichuan Province, but is has disappeared in cities, towns and even in the farming regions of Sichuan since the late twentieth century. The results of investigation made from July 1955April 2002 and historical data showed that since the late 1950s, the population number of magpie in Sichuan had revealed descent trend; the local disappearance phenomenon began at the 70s; in the 80s, it was a peak period of the partial extinction and the disappearance phenomenon expanded from the basin to mountainous areas around basin to mountainous areas in southwest of Sichuan; in the 90s, the distribution pattern revealed rare in the basin, partial distribution in mountainous areas around basin or in southwest Sichuan, and extensive distribution in western Sichuan plateau. The discussion indicates that the partial extinction and geographic distribution change of the magpie in Sichuan is the result of felling trees excessively, abusing hypertoxic pesticides, hunting and destroying nest etc.
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