免费文件外链网站,平台公司拿地,东莞网站建设制作公司排名,加盟网站需要怎么做本内容旨在丰富最大熵模型的分析内容#xff0c;并针对目前文章存在的问题#xff1a;#xff08;1#xff09;分析内容单一#xff0c;重复度高和查重率高#xff0c;#xff08;2#xff09;建模流程过于简单#xff0c;结果可信度评估方法过于单一等#xff1b;推…本内容旨在丰富最大熵模型的分析内容并针对目前文章存在的问题1分析内容单一重复度高和查重率高2建模流程过于简单结果可信度评估方法过于单一等推出以外文文献为参考依据的新课。由于教程资料刚推出以下专题内容专题二到专题九目前国内中文查重率为0。因此可以作为创新点补充拓展丰富文章内容降低文章重复率。专题二到专题九在R平台完成。资料是实操演示针对R语言0基础可以学习。 补充说明物种分布建模SDM和生态位建模ENM的区别。当关注表征物种地理分布而不在时间或空间上转移模型时使用“SDM”。当强调估计物种的环境偏好目的是寻找不同时间或空间中相似条件时我们建议使用“ENM”。 ENM的常见应用包括表征物种的完整地理分布估计物种入侵的地理潜力以及预测气候变化对物种分布的可能影响本课程专题包含内容。
专题一数据软件准备
内容介绍软件安装与环境配置基于R处理环境气候变量数据 专题二全部R平台完成样点数据预处理模型Ind_data校准数据划分模型参数设置和说明单组环境变量和多组环境变量同时做参数优化-kuenm使用最新版R包-直接导出矢量图关于设备兼容性补充说明 专题三MESS分析和MOD分析-多参数建模投影全部R平台完成利用R划定采样区并构建maxent模型最优参数建模利用R对整个研究区投影利用R对不同参数-多时期同时建模MESS多元环境相似度面分析Multivariate environmental similarity surfaceMOD最不相似变量分析Most dissimilar variable基于R对建模结果评估ROCs and omission rates 专题四模型外推风险Extrapolation risk analysis分析全部R平台完成参数设置和运行基于MOP度量物种外推风险结果解读说明用于区域相似度分析和变化分析 专题五不同参数下计算模型统计数据跨模型结果统计数据calculation of model statistics across models (results from distinct parameter settings are allowed)模型3种外推模式“E”, “EC”, “NE”介绍 2.不同模式下外推结果说明 专题六Projection_Changes多时期和不同外推模式下投影区域的变化分析不同时期和外推模式下的二进制文件生成不同时期和外推模式下二进制文件的比较变化分析不同时期和外推模式下连续性文件的比较变化分析 专题七creation of maps showing the variance contributed per each source of variation建模投影区方差大小分析不同区域可信度体现建模区方差变化分析不同emi_scenarios的结果差异分析var_replicates的结果差异分析 专题八制图部分非R平台完成 包含以上分析内容的结果制图
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