Relative density and habitat use of four pheasant species in Xiaoshennongjia Mountains, Hubei Province, China

摘要

Many species of China's Gailiformes live in forests and it is often difficult to assess populations of species in these habitats. Such assessments are becoming increasingly important because much of China's forest has been altered through logging and other forms of human activity. After describing and mapping habitat types, we assessed two commonly used methods for counting pheasants (transects and point counts at dawn) in the Xianshennongjia Mountains in the Three Gorges area of Hubei Province in east-central China. Four pheasant species were recorded: Golden Pheasant Chn/solophus pictus, Temminck's Tragopan Tragopan temmmcki, Koklass Pucmsia mncrolopha and Common (or Ring-necked) Pheasant Phasiamis colcliicus. Golden Pheasants were detected most often by calls heard during transects and Koklass were recorded mostly during point counts at dawn. Temminck's Tragopan was detected during transects (by sightings) and also by calls at dawn. The relatively few Common Pheasants that were detected were registered mainly during transects. Golden Pheasants were found at the lowest altitudes, closest to human habitation and both Temminck's Tragopan and Koklass lived in various forest types above this. Common Pheasant was found in meadows at higher altitudes. We conclude that the methods used can determine general habitat use, but that no one method is likely to prove sufficient to unravel the detailed pattern of habitat use across all four species. In particular, further study is required to assess the relative importance of different forest types to Golden Pheasant, Temminck's Tragopan and Koklass. It would appear that human impact on the forest lias affected the distribution of the pheasant species. For example, Common Pheasant is now absent from low-lying areas and occurs at what appears to be an unusually high altitude in the study area.