摘要
大鸨属大型草原鸟类,过去曾广泛分布于黑龙江省西部及内蒙古的东部,目前,已经处于濒危状态。图牧吉国家级自然保护区是大鸨的主要栖息地,繁殖数量约200多只。1998年开始记录到越冬大鸨个体,2003年冬季越冬数量达到165只,近几年由于环境变化,大鸨数量有所减少,但均保持在100只左右。本文对图牧吉自然保护区大鸨数量变化原因进行了分析,并对大鸨保护和恢复保护提出了建议。
The great bustard （ Otis tarda）, a large grassland bird once widey distributed in West Heilongjiang and East Inner Mongolia, was now in the endangered state and Tumuji national nature reserve is a main habitat of the bird.In the reserve, number of breeding individuals amounted to more than 200; since 1998, overwintering individuals were recorded and increased to 165 in 2003.In recent years, due to environment changes, number of the bustard began to decrease, yet maintained at about 100 in the reserve. Causes of the quantitative change of bustards in the reserve were analyzed and their recovery and conservation were discussed.
关键词
大鸨
数量分布
资源现状
保护
图牧吉
Great bustard
Quantitative distribution
Recovery
Conservation
Tumuji
