群落的空间结构说课PPT文件格式下载.pptx

1、,一、说教材,1、教材的地位和作用群落的结构特征,能力 目标,一、说教材,情感,目标,2.教学目标知识概述群落目的标垂直结构培养学生观察和分析图像资料从而 解决三生维物目学标问题的能力,形成知识与生活实际应用相结合的,意识,重点,难点,3.教学重点难点,一、说教材,概述群落 的垂直结 构,分析垂直结 构对动物分 布的影响,二、说教法,直观教学法抛锚式教学法 多媒体教学法,三、说学法,运用处 理信息,分析 能力,思维 能力,四.说教学过程,复习导入,4布板置书作设业计,课堂小结,1,讲授新课,2,3,5板书设计,模拟课堂,群落的 结构特征,群落的 物种组成,种间关系,群落的 空间结构,四.群落的

2、空间结构,（一）群落的空间结构垂直结构概念：是指群落在空间上 的垂直分层现象。引起植物分层分布的 主要原因是：光照强度,（一）群落的空间结构垂直结构,在高山植物群落中，不同海拔地带的植物呈 垂直分布主要是受温度制约的。所有的植物群落的分层都是主要由光照强度所 造成的吗？请举例说明。,（一）群落的空间结构垂直结构,吃高大乔木的种子,筑巢，以森林中层的昆虫 为食吃地面上的苔鲜和昆虫。,（一）群落的空间结构垂直结构,引起动物分层分布的主要原因：食物、栖息场所垂直结构的生物意义：使生物群落在单位面积上能容纳更多的生 物种类和数量，提高了群落利用环境资源（如阳光、空间、营养物质等）的能力。,小麦玉米套作

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