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高中地理教材活动系列57

  • 2026-04-06 22:06:54
高中地理教材活动系列57

活动材料

    1.想一想,下列人口稀少区域主要受什么因素影响?(在表格中画圈)

    

    2.阅读下列材料,完成相关任务。

    在云南的热带及其边缘地区,人口垂直分布模式与中国其他地区有所差异。例如,南定河的河谷平原,尽管地势低平,但过热过湿,排水不畅,加上草木繁茂,特别是疟疾对人体健康的威胁很大,人口分布较少;元江中游的河谷平原,地处雨影区,气候干热,人口也不多。相反,在区内海拔适中的山区和高原,气温和降水适中,排水通畅,疟蚊危害明显减轻,人口分布较为稠密,从而与河谷地带形成鲜明对照。

    (1)在青藏高原地区,人口主要分布在地势较低的河谷地带,如青海的河湟谷地,西藏的雅鲁藏布江中游及拉萨河谷地等,而其他地区人口则非常稀少。议一议,青藏高原与云南热带及其边缘地区相比,两者人口垂直分布模式差异较大,其主要原因是什么?

    (2)在热带地区,人口稠密的地方通常不在平原地区,而在山区和高原。读图1-2,对照世界地形分布图,找出能够说明这一地理现象的实例。

活动目标

    1.结合具体区域理解影响人口分布的主要自然因素(气候、地形等)。

    2.比较青藏高原与云南热带边缘地区人口垂直分布的差异,探究不同区域人口分布模式的成因。

    3.结合世界地形图,找出热带地区人口分布地形特点。

    4.认识自然环境与人类活动的密切关系,增强因地制宜的人地协调观。

活动建议

    1.第1题可与人口密集区对比,增强理解影响人口分布的主要自然因素。对于具体区域,要注意主要影响因素与因素间的关系,如青藏高原,海拔高是主要因素,因为海拔高形成高寒的高原气候。

    2.注意区域内部差异,如青藏高原与高原河谷的差异、热带地区平原的湿热与高原的相对凉爽,感悟因地制宜。

    3.学生区域知识储备相对较少时,应提供区域气候、地形等相关要素专题地图,方便学生学习提取信息。同时引导学生自主搜集相关信息,学会处理实际问题。

参考答案

    1.

人口稀少区域

地形

水文

土壤

植被

气候

亚马孙平原

青藏高原

撒哈拉沙漠

格陵兰岛

    2.(1)青藏高原平均海拔高,气温低,热量条件差,而地势相对较低的河谷地带热量条件好,加上地形平坦、土壤肥沃、灌溉便利,利于农业生产。云南热带及其边缘地区的低地,气候湿热,排水不畅,草木繁茂,疟疾对人体健康构成很大威胁,人口分布较少;海拔适中的山地和高原,气温和降水适中,排水通畅,疟蚊危害明显减轻,人口分布较为稠密。

    (2)例子:巴西人口集中分布在巴西高原而亚马孙平原人口较少;墨西哥人口大部分位于墨西哥高原南部地区。

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  1. CONNECT:[ UseTime:0.000843s ] mysql:host=127.0.0.1;port=3306;dbname=c_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001341s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000735s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000726s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001363s ]
  6. SELECT * FROM `set` [ RunTime:0.000624s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001474s ]
  8. SELECT * FROM `article` WHERE `id` = 466779 LIMIT 1 [ RunTime:0.002281s ]
  9. UPDATE `article` SET `lasttime` = 1775523670 WHERE `id` = 466779 [ RunTime:0.001246s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000676s ]
  11. SELECT * FROM `article` WHERE `id` < 466779 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003896s ]
  12. SELECT * FROM `article` WHERE `id` > 466779 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004441s ]
  13. SELECT * FROM `article` WHERE `id` < 466779 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.026633s ]
  14. SELECT * FROM `article` WHERE `id` < 466779 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.044129s ]
  15. SELECT * FROM `article` WHERE `id` < 466779 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004298s ]
0.259064s