| 摘要: |
| 【目的】 了解褐马鸡(Crossoptilon mantchuricum)夏季沙浴地选择的特征。【方法】 于2007-07-2007-08，在陕西黄龙山自然保护区北寺山林区设点，采用样带法对褐马鸡夏季沙浴地的选择进行了研究，测定了8条样带上36个试验样方和96个对照样方的19种生态因子。【结果】 褐马鸡夏季偏好选择的沙浴地的特征为：阔叶林，乔木盖度30%~50%， 直径10~20 cm， 高度小于10 m，密度0.05~0.10 株/m2；灌丛盖度大于50%，高度小于1.5 m， 密度大于5 株/m2；草本盖度大于30%， 高度大于10 cm；海拔大于1 400 m；坡度大于30°，位于阳坡，坡位为上坡位，多为山脊；人为干扰距离、水源距离和林边距离均大于500 m，隐蔽级小于10%。确定了褐马鸡沙浴地资源选择函数，其正确预测率为94.7%，影响褐马鸡夏季沙浴地选择的关键因子是隐蔽级和草本高度，次关键因子是水源距离和草本盖度。【结论】 确定了夏季褐马鸡沙浴地选择的关键因子与次关键因子，对了解褐马鸡沙浴地的环境特征以及选择机制有重要的参考意义。 |
| 关键词: 褐马鸡 沙浴地 环境特征 Jacobs法 资源选择函数 |
| DOI： |
| 分类号: |
| 基金项目:陕西省林业厅自然科学重点项目(08-0102) |
|
| Sun bathing habitat selection by Brown eared pheasant (Crossoptilon mantchuricum) during summer in Huanglong Mountains Nature Reserve,Shaanxi,China |
|
|
| Abstract: |
| 【Objective】 The research was to know summer sun-bathing habitat selection of Brown eared pheasant (Crossoptilon mantchuricum).【Method】 Sun-bathing habitat selection was studied by using Line transects of systematic sampling during the late breeding period in Beisi Mountains of Huanglong Mountains Nature Reserve,Shaanxi Province,China from July to August 2007.Nineteen ecological factors of thirty six sun bathing sites used by Brown eared pheasant and ninety six random plots were measured during 8 transects crossing the entire study area.【Result】 The results showed that Brown eared pheasant preferred sun bathing sites in areas characterized by broadleaf forest,cover (30%-50%),diameter (10-20 cm),density (0.05-0.10 plant/m2) and height(＜10 m) of trees,cover (＞50%),height (＜1.5 m) and density (＞5 plant/m2) of shrub,cover (＜30%) and height (＞10 cm) of grasses,altitude (＞1 400 m),slope degree (＞30°),sunny slope,upper slope,ridge,distance to human disturbance (＞500 m),water source (＞500 m) and edge of woods (＞500 m),sheltering class (＜10%).Resource selection function was a log linear model and the overall classification model was successful to distinguish the sun bathing sites from random ones at probability of 94.7%.The key factors notably influenced sun bathing habitat selection were sheltering class and height of grasses,the secondary key factors were distance to water source and cover of grasses.【Conclusion】 The key and secondary key factors of sun bathing habitat selection have contributed to the understanding of environment characteristic and selection mechanism on sun bathing sites of Brown eared pheasant. |
| Key words: Brown-eared pheasant sun-bathing habitat environment characteristic Jacobs’index resource selection function |
