高黎贡山冬季白尾梢虹雉运动方式和生境偏好的初步观察

Preliminary Report on the Movement and Habitat Preference of Sclater's Monal at Mt. Gaoligongshan in Winter

20 0 2及 2 0 0 3年 1月 ,两次对高黎贡山大脑子白尾梢虹雉 (Lophophorussclateri)的运动方式和活动痕迹做了直接观察或样带 /样方取样。该鸟滑翔是下行的主要运动方式 ,上行全为行走 ;所发现的 3个夜宿地均位于坡度大、郁闭度高的近沟谷地带 ;冬季向低海拔迁移 ,与降雪有关 ,使得近沟谷带成为密集利用带。这样的运动和生境利用方式 ,显然是能耗最小化和觅食效率最大化的行为适应。

The movement way of Lophophorus sclateri was directly observed at Danaozi in Mt.Gaoligongshan in Januaries of 2002 and 2003,and habitat preference of the pheasant was sampled by transect and quadrant methods.The pheasant usually glided down,and always walked up.Three sleeping sites were found on steep slopes with high canopy density,and close to the valley.The pheasant shifted down in winter,which may be related to heavier snow in higher locations,resulting in a dense use of the belt close to the valley.The movement way and pattern of habitat use are clearly bound to maximize foraging effectiveness and minimize energy expenditure.