[ Objective] To represent characteristics of roosting-sites of blue-eared pheasant （ Crossoptilon auritum） in breeding season and the fac- tors affecting selection of roosting-sites. [ Method] A total of 32 night ro...[ Objective] To represent characteristics of roosting-sites of blue-eared pheasant （ Crossoptilon auritum） in breeding season and the fac- tors affecting selection of roosting-sites. [ Method] A total of 32 night roosting-sites of blue-eared pheasants and 45 control sites were selected from the Gahai-Zecha Nature Reserve in Gansu Province in breeding season. Fifteen habitat factors including landform, vegetation and distance were surveyed. Chi-square test and test of significance were conducted. And major environmental factors affecting selection of roosting-sites were deter- mined by principal component analysis. [ Result] As shown by the chi-square analysis, roosting-sites were characterized by sunny slope; steeper slope; higher arbor coverage, arbor height and trunk diameter; and lower shrub coverage, shrub height, grass coverage and grass height. The principal component analysis showed that shrub coverage, shrub height, distance to road, moss coverage and grass height were the key factors for the blue-eared pheasants to choose roosting-sites. [ Conclusion] Blue-eared pheasants usually select coniferous forest on sunny and steeper slope which has many high shrubs as their night roosting-sites.展开更多
基金funded by the China Natural Science Foundation ( 30530130)Natural Science Basic Research Plan in Shaanxi Province of China ( 2010JQ3001)+1 种基金Scientific Research Program Funded by Shaanxi Provincial Education Department ( 2010JK543)Graduate Program of Weinan Teachers University ( 10YKZ055)
文摘[ Objective] To represent characteristics of roosting-sites of blue-eared pheasant （ Crossoptilon auritum） in breeding season and the fac- tors affecting selection of roosting-sites. [ Method] A total of 32 night roosting-sites of blue-eared pheasants and 45 control sites were selected from the Gahai-Zecha Nature Reserve in Gansu Province in breeding season. Fifteen habitat factors including landform, vegetation and distance were surveyed. Chi-square test and test of significance were conducted. And major environmental factors affecting selection of roosting-sites were deter- mined by principal component analysis. [ Result] As shown by the chi-square analysis, roosting-sites were characterized by sunny slope; steeper slope; higher arbor coverage, arbor height and trunk diameter; and lower shrub coverage, shrub height, grass coverage and grass height. The principal component analysis showed that shrub coverage, shrub height, distance to road, moss coverage and grass height were the key factors for the blue-eared pheasants to choose roosting-sites. [ Conclusion] Blue-eared pheasants usually select coniferous forest on sunny and steeper slope which has many high shrubs as their night roosting-sites.
