《Table 3 Results of logistic regression for Grus grus habitat selection》
本系列图表出处文件名:随高清版一同展现
《Spatial Distribution Prediction of Habitats Selected by Wintering Common Cranes(Grus grus) at Yeya Lake Wetlands under Land Use Change》
Note:The table also shows coefficient,standard error,and Z-value for each variable.Variables:C-constant;E-elevation;W-distance to waters;H-distance to residential area and construction land;G-dis-tance to grassland and marsh;F-distance to farmland;B-dist
The logistic regression equation of the final model was y=46.6153-0.1014E+0.0018W+0.0010H-0.0026G-0.0012F-0.0017B-0.0005R,y means the dependent variable of the binary logistic model with two possible values“0”and“1”;E expresses elevation;W expresses distance to waters;H expresses distance to residential area and construction land;G expresses distance to grassland and marsh;F expresses distance to farmland;B expresses distance to bush land;R expresses distance to road.The y was calculated using raster calculator function in spatial analyst tools,combining the raster layers as defined by the equation.The inverse logistic transformation was P=expy/(1+expy),P means probability of occurrence.Probability of occurrence was calculated also using raster calculator function in spatial analyst tools to produce Grus grus occurrence probability across study area(Fig.2).Higher occurrence probability happened on the areas of the farmlands and the grasslands and marshes,whereas lower occurrence probability happened on the areas of the residential area and construction lands and waters.The area under the curve of the receiver operating characteristic plot was(0.831±0.022)in2006 and(0.806±0.024)in 2009(Table 4),implying the present model was effective.
图表编号 | XD0054133600 严禁用于非法目的 |
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绘制时间 | 2019.02.01 |
作者 | CAO Zhen、ZHANG Yu、GUO Lida、LI Can、HONG Jianming、GAO De |
绘制单位 | Department of Chemical and Environmental Engineering, Hebei College of Industry and Technology、Department of Resources and Environmental Science, Hebei Normal University、Department of Chemical and Environmental Engineering, Hebei College of Industry and T |
更多格式 | 高清、无水印(增值服务) |