白颈长尾雉春季扩散活动的影响因子

2002年10月-2003年6月和2003年11月-2004年6月，采用无线电遥测、GPS技术、SAW模型和样方法，对浙江省古田山自然保护区白颈长尾雉的扩散过程及其影响因子进行了研究。结果表明：①白颈长尾雉在春季均存在持续约为16—23d的扩散活动，其扩散直线距离在1．5～2．1km。②扩散过程中白颈长尾雉对其运动路线存在选择性，在其扩散进入和未进入区域之间，草本盖度、乔木种数、灌木种数、灌木枝下高、灌木数量和草本数量存在极显著差异；距水源距离、坡度、乔木数量、乔木枝下高和草本种数存在显著差异。③灌木种数、灌木枝下高、坡度和灌木数量等与障碍有关的因子是影响白颈长尾雉扩散活动的重要因子。

Factors Affecting Movement of Spring Dispersal of Elliot's Pheasants

During periods of October 2002 to June 2003 and November 2003 to June 2004, the study of the factors affecting dispersal of Elliot's pheasants was carried out in Gutianshan National Nature Reserve, Zhejiang Province of China, using methods of radiotelemetry, GPS, SAW modelling and sampling. The results showed that both males and females dispersed in spring, and their dispersal distance varied from 1.5 to 2.1 km with a duration of 16 to 23 days. Movement routes of Elliot's pheasant were selective when dispersal occurred in spring. The variables of herb coverage, number of tree species, number of shrub species, canopy height of shrubs, abundance of shrubs and abundance of herbs resulted in highly significant differences between used and unused patches (P<0.01). Five additional variables, including distance to water, slope, number of trees, canopy height of trees and number of herb species also resulted in significant differences between used and unused patches (P<0.05). The result of Conditional Logistic Regression analysis suggested that the major factors affecting dispersal of Elliot's pheasant in the spring were number of shrub species, canopy height of shrubs, slope and abundance of shrubs.