次生落叶阔叶林鹭类营巢地生境特征  

Analysis on Habitat Characteristics of Umbrette Nest-site in Secondary Deciduous Broad-leaved Forest

作　　者：邓天鹏[1,2] 曾国仕[3] 郑合勋[1] 

机构地区：[1]河南大学生命科学学院,河南开封475001 [2]河南丹江湿地国家级自然保护区管理处,河南南阳474450 [3]温州大学团委,浙江温州325000

出　　处：《四川动物》2011年第5期780-783,共4页Sichuan Journal of Zoology

基　　金：河南大学博士科研启动费

摘　　要：2006年4月至6月对河南省确山县石磙河乡小王沟村的鹭类营巢地的生境特征进行了研究。在所设置的4条样线上共测定55个样方,其中利用样方32个,测定其15个生态因子;对照样方23个,测定其9个生态因子。该营巢地为池鹭Ardeola bacchus、白鹭Egretta garzetta、牛背鹭Bubulcus ibis的混群营巢地,以池鹭占绝对优势,营巢以本地的优势树种栓皮栎为主。鹭巢的乔木冠层空间位置,垂直空间上主要选择乔冠上位和中位,水平空间上主要选择乔冠内部和中部。分析表明,小王沟鹭类营巢地的生境特征是:①乔木形态因子:乔木密度较低,乔木高大;②林相因子:灌木盖度较低的纯栓皮栎林分;③地理因子:阳坡和半阳坡的下坡位。Habitat characteristics of an umbrette nest-site were surveyed in Xiaowang Gully village,Shigunhe township,Queshan county,Henan province in April to June,2006.55 samplings were measured on the four line transects,32 of which were usage sites,23 of others were random sites.15 environmental variables possibly pertaining to nest selection were measured,including forest stand,slope direction,slope position,tree quantity,tree height,tree breast diameter,tree crown height,tree crown radius,shrub cover,branch where the nest,nest height at tree crown,nest and crown vertical ratio,nest distance to trunk,nest and trunk horizontal ratio,and nest spatial position.There were Ardeola bacchus,A.bacchus,Egretta garzetta in the nest-site,where the A.bacchus population was categorically dominant,and the nests were mainly nidified on the local dominant species cork oaks and mostly selected upper and middle tree crown in vertical space,and interior and central section in horizontal space.The results showed that the habitat characteristics of umbrette nest-site included following factors：first is the tree shape factor which comprised of tallness and greatness of trees,lower tree density;second is the forest form factor which is pure cork oak forest stand with lower shrub cover;third is topographical factor with nests on the lower slope of sunny and semi-sunny slopes.

关 键 词：鹭科鸟类 营巢地 生境选择 

分 类 号：Q958[生物学—动物学]