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当前位置: 首页 > 文章 > 中华秋沙鸭越冬微生境选择与空间利用格局 东北林业大学学报 2019 (11) 91-95
Position: Home > Articles > 中华秋沙鸭越冬微生境选择与空间利用格局 Journal of Northeast Forestry University 2019 (11) 91-95

中华秋沙鸭越冬微生境选择与空间利用格局

作  者：
易国栋;房健;尹君龙;王海涛;王经涛;肖冬样
单  位：
吉林师范大学
关键词：
中华秋沙鸭;越冬;微生境选择;空间利用;石滩
摘  要：
为探讨中华秋沙鸭(Mergus squamatus)越冬栖息地选择和利用规律,对江西省中华秋沙鸭4个越冬区域进行了调查分析.实地测定河宽、隐蔽度、石滩数量等8个相关环境因子,采用主成分分析等统计分析方法对生境特征进行分析,对利用和未利用微生境进行非参数检验,采用相关分析判断观测变量与个体数量的关系,并对利用栖息地微生境的空间分布进行了分析.结果表明:中华秋沙鸭的越冬栖息地的微生境组合具有规律性,并呈现出明显的空间格局.河流的流速、透明度、隐蔽度、植被盖度、石滩数量为影响中华秋沙鸭栖息地选择和利用的主要因素,其中石滩的作用尤为突出,对栖息地选择、利用和数量分布具有显著影响.
作  者：
Yi Guodong;Fang Jian;Yin Junlong;Wang Haitao;Wang Jingtao;Xiao Dongyan;Jilin Normal University;Northeast Normal University;Yanshan Forestry Bureau of Jiangxi Province;Longhushan Forestry Bureau of Jiangxi Province;
关键词：
Mergus squamatus;;Overwinter;;Micro habitat selection;;Spatial utilization;;Gravel bar
摘  要：
In order to discuss the habitat selection and spatial utilization patterns of wintering Chinese Mergansers(Mergus squamatus), we conducted field trips in four of the wintering regions for this species in Jiangxi Province, measuring eight related environmental factors including width, canopy covers, quantity of gravel bars, etc. The habitat characteristics were analyzed by corresponding statistics analysis methods such as principal component analysis; utilized and unutilized micro habitats were tested by non-parametric tests; relations between the observed variables and individual numbers were measured by correlation analysis; and the spatial pattern of the micro habitats on utilized habitats were also analyzed. The micro habitat combinations of M. squamatus presented regularity and obvious spatial pattern. Flow velocity and transparency of rivers, canopy covers, vegetation coverage, and quantity of gravel bars were the major factors influencing habitat selection and utilization of M. squamatus. Among the aforementioned factors, gravel bar plays the key role in influencing habitat selection, utilization, and quantity distribution.

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