江西省境内中华秋沙鸭越冬生境选择

为探讨中华秋沙鸭越冬的生境选择策略。2009-2011年12月中旬利用样方法、因子测定法和卡方检验等方法对江西省境内中华秋沙鸭越冬的生境选择进行了调查分析。结果表明：中华秋沙鸭越冬嬉戏、觅食和栖息的生境选择具有普遍性并具有以下特征：越冬地海拔较低，年平均气温为16.5℃；越冬地依山傍水且均沿河流分布，多集中在河流的中下游水势相对平缓地带；越冬生境选择通过植被、水环境和人为干扰因子来实现；对低海拔(50~60 m，78.6%)、低坡度(<0.36，98.6%)、低噪音(<40 dB，89.2%)、村镇(6~12 km，71.9%)、公路中等距离(1~2 km，79.4%)、近林缘(<50 m，85.4%)的区域选择性较高。

Wintering Habitat Selection of Scaly-sided Merganser (Mergus squamatus) in Jiangxi Province

In order to probe the wintering habitat selection of Mergus squamatus. The methods of fixed-spot observation, GPS positioning, plot sampling measurement, factor analysis, and χ2 test were used to investigate Merganser’s wintering habitat in Jiangxi Province. The results showed that: the habitat type choice had the characters of universality and particularity. The key elements for the wintering habitat selection were vegetation cover, water environment, terrain factor, human disturbance factor. The wintering habitat selection of Mergus squamatus was prior to the area which have low altitude (50-60 m, 78.6%), low gradient (<0.36, 98.6%), low noise distribution (<40 dB, 89.2%), and far away from village ( 6-12 km, 71.9%), middle far away from village( 6-12 km, 71.9%), road (1-2 km, 79.4%), and forest edge (<50 m, 85.4%).