拉萨拉鲁湿地夏季鸟类调查初报

Preliminary Investigation on the Bird Community in Summer at Lalu Wetland, Lhasa

20 0 4年 8月采用样线法调查了拉萨市拉鲁湿地夏季鸟类的种类和数量 ,共记录到 2 6种鸟。鸟类群落中以灰沙燕 (Ripariariparia)、红脚鹬 (Tringatotanus)为优势种 ,优势度明显 (D =0 . 40 8) ,但群落多样性不高 (H′=1 . 5 3 1 )。拉鲁湿地夏季鸟类群落中涉禽和草甸鸟类占主导地位 ,标示着湿地表面水位下降。

The components and biodiversity of summer bird community were investigated at Lalu wetland in 2004. Twenty-six species were observed with line transect method. Sand Martin and Common Redshank were the dominant species in this bird community.The dominance index was distinctly high(D=0.408), but the community biodiversity was not great(H′=1.531).The characters of bird community and environment changes were also analyzed.