检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李凤山
出 处:《生物多样性》1999年第4期257-262,共6页Biodiversity Science
基 金:国际鹤类基金;草海国家级自然保护区合作项目
摘 要:本文报道了利用Friedman非参数统计方法,研究越冬黑颈鹤(Grusnigricollis)在贵州草海对其觅食栖息地选择的结果。在草海的黑颈鹤越冬觅食栖息地可分为5种──莎草草甸、浅水沼泽、草地、玉米地和蔬菜地。黑颈鹤对莎草草甸的选择性最高,对玉米地的选择性最差,对其余类型栖息地的选择随地点的不同而不同。草海的人为活动很多,是影响黑颈鹤利用和选择栖息地的一个重要因素。本文也对改善黑颈鹤越冬栖息地的管理和保护提出了一些建议。This paper reported results of field observation on foraging habitat selection of the wintering Blacknecked Cranes(Grus nigricollis ) in Caohai, Guizhou of China. Deta of the foraging habitat selection were analyzed by the Friedman statistical method. Five types of foraging habitats of Black-necked Cranes, i. e., sedgemeadow, shallow water marsh, corn field, vegetable field and grassland, were identified in Caohai. The sedgemeadow was the most preferable one of Black-necked Cranes While the farmland the least. The preferential sequence of the other habitats vdried site by site. Human activities in Caohai were one of the major factors influencing habitat use and selection by cranes.Some suggestions were also put forward on the habitat proectionfor the wintering Black-necked Cranes.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.28