基于卫星跟踪技术的三江平原大白鹭幼鸟活动区分析

Analysis of Movements of a Juvenal Great Egret on the Sanjiang Plain by Satellite Tracking

2014年6月19日,我们在黑龙江七星河国家级自然保护区给1只大白鹭幼鸟佩戴了卫星跟踪器。结果表明:从大白鹭幼鸟7月12日离巢,至10月10日跟踪器信号消失,期间的活动范围从七星河保护区扩散到三江平原的饶力河保护区、三环泡保护区、三江保护区、别拉洪河下游等区域;MCP法和90%KDE法估算大白鹭幼鸟的活动区面积分别为760.15 km^2和260.90 km^2,50%KDE法估算出核心活动区面积为55.41 km^2。农田在大白鹭幼鸟活动区中占比达到79.7%,是大白鹭幼鸟离巢后的主要栖息地。

On June 19,2014,a juvenal great egret was banded and tracked by GPS tracker at Qixinghe National Nature Reserve.The GPS tracker worked well until its signal disappeared on October 10.The juvenile left its nest on July 12,and then moved to Naolihe Natural Reserve,Sanhuanpao Nature Reserve,Sanjiang National Nature Reserve and the downstream reach of Bielahong River.The home range of the juvenile was 760.15 km^2 as calculated by MCP,and 260.90 km^2 as calculated by 90% KDE.The core home range was 55.41 km^2 as calculated by 50%KDE.Farmland occupied 79.7% of the home range of the juvenile,which shows that farmland is the main habitat after the juvenile left the nest.