期刊论文

Home range associated with water surface variations for wintering Cygnus columbianus in Dongting Lake

Zhao, Y.

中文

生态学报

1000-0933

2019

39

22

8657-8666

10.5846/stxb201804260951

2019JJ40012:湖南省自然科学基金 2017TP2014:湖南省科技创新平台与人才计划项目 2018TP1042:湖南省科技创新平台与人才计划项目 2016TP1014:湖南省科技创新平台与人才计划项目

本校为第一机构

洞庭湖是小天鹅在我国的重要越冬地之一,为探讨洞庭湖水位变动对越冬小天鹅活动的影响,本研究于2014—2015年利用卫星跟踪技术对洞庭湖自然保护区18只越冬小天鹅活动轨迹进行跟踪,采用最小凸多边形(MCP)和核心密度估计(KDE)方法估算了越冬中、后期不同水位条件下小天鹅的家域。同时,基于MODIS遥感数据提取洞庭湖水体面积、计算水体淹没时间指数(STI),进而开展了水位与家域关系、栖息地选择模式等方面的分析和探讨。结果表明:水位对小天鹅家域起制约作用,随着水位上升小天鹅家域范围会明显减小;越冬期间小天鹅喜好在空间相邻的浅水和草地综合性区域活动,食物资源分布和可获得性是小天鹅活动区发生...

Dongting Lake is an important wintering habitat of Cygnus columbianus in China. To explore the effect of water level changes in Dongting Lake on the activities of wintering Cygnus columbianus, satellite tracking was carried out for 18 C. columbianus individuals in the Dongting Lake between 2014 and 2015. The home range of C. columbianus at different water levels during the wintering period were estimated via the Minimum Convex Polygons (MCP) and Kernel Density Estimation (KDE) methods. The MODIS remote sensing data were used to extract the surf...