白颈长尾雉与白鹇秋冬季空间生态位比较

Spatial niches of Syrmaticus ellioti and Lophura nycthemera in autumn and winter

2008年9月-2009年2月,在江西官山国家级自然保护区对白颈长尾雉(Syrmati-cus ellioti)和白鹇(Lophura nycthemera)及其栖息地生态因子进行调查,通过8个资源轴分析了2个种的多维生态位宽度、重叠及种间竞争。结果表明,白鹇和白颈长尾雉综合空间生态位宽度分别仅为0.268和0.294;白鹇的海拔和坡度空间生态位大于白颈长尾雉,而白颈长尾雉的坡向生态位宽度大于白鹇,在其他资源轴上二者接近;白颈长尾雉和白鹇的栖息地生态位相似性为0.425,竞争系数为0.584,竞争比较激烈。应加强低海拔地区植被及水源的保护,减少人为干扰。

In September 2008 and February 2009,an investigation was made on the habitat ecological factors of Syrmaticus ellioti and Lophura nycthemera in Guanshan National Nature Reserve in Jiangxi Province,with the niche breadth,niche overlap,and interspecific competition of the two species analyzed by eight habitat resource axes.The integrative niche breadth of S.ellioti and L.nycthemera was only 0.294 and 0.268,respectively,indicating a narrow niche.S.ellioti had narrower altitude-and slope niche breadths but wider aspect niche breadth than L.nycthemera,while the other resource axes niche breadths of the two species were similar.The niche similarity of the two species was 0.425,and the competition coefficient was 0.584,indicating an intense competition between the two species.It was suggested that the protection of vegetation and water resources at low altitude should be strengthened,and human disturbances should be reduced.