黄河三角洲黑嘴鸥繁殖调查研究

Propagation Study of Saunders's Gull at Shandong Yellow River Delta

山东黄河三角洲国家级自然保护区是黑嘴鸥在全国的三大繁殖地之一。本文采用野外直数法、样线法,连续开展了保护区境内黑嘴鸥的调查研究。黑嘴鸥主要栖息在近海滩涂和河口区域,繁殖生境一般在地势低洼地、潮间带内;繁殖期从4月下旬持续到7月中旬,1998年至2014年黑嘴鸥繁殖期的数量变化范围为1254-4012只,呈现逐年增加的趋势。对黑嘴鸥的保护还应在以下方面进行加强,改进研究方法、改善繁殖地生境、开展巡护救助措施和普及爱鸟护鸟知识。

Shandong Yellow River Delta National Nature Reserve is one of the three breeding place of Saunders＇s Gull in China.In this study,continuous observation was carried out since 1998;using direct count method and line transect method.The results showed that Saunders＇s Gull＇s habitats were tidal flat and estuary region.They usually bred in low depression or intertidal zone during late April and middle July.The number of Saunders＇s Gull ranged among 1254 to 4012,indicating the increasing trend.In order to protect Saunders＇s Gull,more measures should be taken into account,such as innovating study method,improving breeding habitat,developing ground-detecting and helping measures,and publicizing birds＇protection knowledge.