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胡军华, 胡慧建, 杨道德, 蒋志刚. 2008: 紫水鸡冬季觅食地选择. 动物学研究, 29(3): 291-296. DOI: 10.3724/SP.J.1141.2008.03291
引用本文: 胡军华, 胡慧建, 杨道德, 蒋志刚. 2008: 紫水鸡冬季觅食地选择. 动物学研究, 29(3): 291-296. DOI: 10.3724/SP.J.1141.2008.03291
HU Jun-hua, HU Hui-jian, YANG Dao-de, JIANG Zhi-gang. 2008: Feeding Site Selection of Purple Swamphen in Winter. Zoological Research, 29(3): 291-296. DOI: 10.3724/SP.J.1141.2008.03291
Citation: HU Jun-hua, HU Hui-jian, YANG Dao-de, JIANG Zhi-gang. 2008: Feeding Site Selection of Purple Swamphen in Winter. Zoological Research, 29(3): 291-296. DOI: 10.3724/SP.J.1141.2008.03291

紫水鸡冬季觅食地选择

Feeding Site Selection of Purple Swamphen in Winter

  • 摘要: 2006年11月-2007年2月,在广东海丰鸟类自然保护区采用样方法研究了紫水鸡 (Porphyrio porphyrio)的冬季觅食地选择。研究结果显示,紫水鸡在冬季对觅食地植被具有明显的选择性,偏爱水葱(Scirpus tabernaemontani)。对62个觅食地样方18个因子的主成分分析表明,草本密度、草本均高、草本盖度、灌木种类、水质和水位这6个因子是冬季觅食地选择的主要因子。判别分析结果表明,枯高、动物性食物丰富度、距大道距离、草本种类、距小道距离、距所处水面边缘距离是区别冬季觅食地和对照地样方的主要参数,判别准确率可达78.1%。紫水鸡冬季多选择在水葱或芦苇(Phragmites communis)等草本植被生长良好、具有特定水位或水质及中等程度的人为干扰的地方觅食。因此,该地区冬季觅食地的恢复和保护对紫水鸡的保护有着重要的意义。

     

    Abstract: From November 2006 to February 2007, the characteristics of the feeding sites of Purple Swamphen (Porphyrio porphyrio) in winter were studied in Guangdong Haifeng Avian Natural Reserve, by sampling methods. The results showed that there was obvious selectivity of the vegetation in the feeding sites during winter, and Scirpus tabernaemontani was the preferred flora. We found that the main selection factors at the feeding sites in winter using the principal component analysis of 18 factors at 62 feeding sites, were the density of herbage, the height of herbage, the canopy of herbage, the shrub species, the water quality and the water level. In addition, we found that the main selection factors at the feeding sites using the Step DA between feeding sites and control samples plots, were the height of hay, the abundance of animal foods, the distance to the road, the herbage species, the distance to the byway and the distance to the water’s edge. The veracity to distinguish was 78.1%. Purple Swamphen preferred to feed in areas that had more Scirpus tabernaemontani or Phragmites communis, special water levels or water quality and medium interference from humans. Thus, restoration and protection of the extant feeding sites in winter are important for the conservation of Purple Swamphen.

     

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