七星河保护区苍鹭巢特征及巢周环境

Characteristics of Nests and The Surrounding Environment of Grey Heron(Ardea cinerea)in Qixinghe National Nature Reserve

2011年4月,在七星河保护区内用生境因子测定法、样方法对苍鹭的巢选择进行了初步研究。结果表明:(1)七星河保护区苍鹭巢为地面型,均营巢于芦苇沼泽,窝卵数以4～5枚卵居多(84.21%);(2)巢外径为95.31±1.30 cm,巢内径为40.29±0.54 cm,巢高为57.51±1.91 cm,巢深为11.51±0.35 cm;(3)巢周水深为42.18±1.94 cm,距道路距离为446.58±13.9 m,巢周芦苇高度为323.12±3.87 cm,密度为263.17±4.20根/m^2,直径为8.11±0.41 mm,盖度为1.32±0.07%。进一步比较分析发现:栖息型、水位、芦苇处理方式的不同,苍鹭巢特征和巢周环境也不同。

We researched nest characteristics and the surrounding environment of Grey heron （ Ardea cinerea ） at Qixinghe National Nature Reserve using a habitat factor measurement method and a quadrat sampling method in April 2011. Gery heron nested in reed marshes in Qixinghe National Nature Reserve. Typical clutch size was 4 -5 eggs （84%） . The external diame- ter, inner diameter, height, and depth of nests were 95.31 ＋ 1.30, 40. 29 ＋0. 54, 57. 51 ＋ 1.91, and 11.51 ~0. 35 cm, respectively. Water depth around nests, distance to roads, reed height around nests, reed density, reed diameter, and reed cover were 42. 18 ± 1.94 cm, 446.58 ±13.9 m, 323.12 ±3.87 cm, 263. 17 ±4.20 roots/m^2, 8. 11 ±0.41 mm, and 1.32 ＋ 0. 07% respectively. If habitat types of Grey heron, water level around nests, and processing modes of reeds around nest were different, the structural characteristics and surrounding environment of Grey heron nests would be different.