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一轮复习专题38 气象灾害及其防治

  • 2026-11-01 18:27:47
一轮复习专题38 气象灾害及其防治

(点开上面视频号:可以完整预览专题38:气象灾害及其防治;其他专题可以关注视频号,有预览)

先说结论:气象灾害这一章,课本列了五种灾,高考只考一个公式——

灾害 = 致灾因子(强度)× 受灾体(暴露与脆弱)

沙源再多,没有大风,起不了沙;暴雨再猛,落在无人区,成不了灾。2025年江西卷问"H山北侧哪个季节沙尘暴最多",答案不背书——春季解冻、表土松散、冷空气频繁,两个因子同时拉满。这就是公式的用法。

01 洪涝:三问收编所有成因

课本上洪涝成因写了好几条,专题38收成三个提问,考场上对着材料逐个过:

水来得多、快吗?——降水集中、支流多、融雪凌汛、坡陡汇水快

排得出去吗?——地势低平、河道弯曲、海潮顶托、城市排水弱

蓄得住吗?——围湖造田、湿地被占、湖泊淤萎缩

洪涝成因三问示意图

*图1 山地汇水快→河道弯曲排水慢→城市围湖调蓄弱(示意图,非实况)*

2023年重庆卷那道喀斯特谷地洪涝题,人工河"上游分洪+两个分洪口+河道顺直",答案三条,恰好对应后两问。答案永远长在问题的骨架上。

02 沙尘暴:三个条件,缺一不起

动力(大风)、物质(沙源)、触发(上冷下热不稳定)——少了任何一个,尘土都飞不起来。这也顺带解释了三个高频疑问:

  • 为什么专挑春天?解冻表土松+冷空气活跃,物质动力双满
  • 为什么下午到傍晚多?热力对流最强,就是那个"不稳定"
  • 为什么南疆多、北疆少?北疆降水多、植被好,沙源被按住了

沙尘暴三条件示意图

*图2 沙源·大风·不稳定气流(示意图,非实况)*

台风(海温26℃+水汽+地转偏向力)、寒潮(冷源+路径)、干旱(来水少+用水多),全是同款三段式。一章五个灾,一套公式。

03 最新真题已经进场

  • 2025江西卷
    :沙尘暴季节判读——两个因子叠加推理
  • 2023湖南卷
    :融雪洪水三连问——雨雪混合型为何破坏力更强(雪面雨水带热量加速融雪)
  • 2025四川卷
    :台风"罗莎"过境,东部沿海39℃高温致水稻减产——灾害影响不写套路,写材料
  • 2026开封二模
    :海雾与海陆风——灾害题正在往"小尺度+过程推理"卷

规律题在让位,情境题在加码。背灾种的学生拿不到分,会套公式拆材料的学生稳拿。

04 专题38配齐了什么

① PPT课件:五种灾害成因分布+防治,97页按"讲解—拆题—再练"编排;

② 真题+适应训练:2025江西、2023湖南、2023重庆、2025四川真题逐题拆解,另配海雾、蒙古气旋沙尘暴等2026届最新模拟;

③ 学生学案:成因表格、三问模板留痕,课后复盘直接翻。

单专题可独立成课,先试看完整内容(PPT+练习+学案),合适再整套取用。全套64个专题陆续更新中。

如有需要👇xsdl606等着你。


这一章最怕的,是学生把五种灾害背成五份笔记。

专题38只教一件事:下次拿到灾害题,先别翻笔记——问因子、找受灾体,公式一摆,答案自己长出来。

07 常见问题

Q1:学生基础差,带谱图直接看不懂怎么办?

比如专题37按"成因链条→四问判读→真题示范"的坡度编排,先用手绘式示意图建立"竖起来的地球仪"直觉,再上真题,不跳步。

Q2:和普通知识点汇总课件的区别?

普通课件按知识条目排列,这套按"推理链条"排列——给定一张陌生带谱图,如何从基带定位、带数反推、雪线林线互证,一步步推出答案。直接对接新高考的情境设问。

Q3:可以修改吗?

提供可编辑源文件,可二次加工。


高三地理最怕的不是学生不努力,而是把力气全花在"背"上,却从没练过"读"。

27届一轮课件陆续更新推出,可以点击蓝色字体标题阅览:

2027届高考地理一轮复习精品课件,重磅上线了

2027届一轮复习专题2 等高线地形图的判读与计算

2027届一轮复习专题3 等高线地形图的应用

2027届一轮复习专题4 等值线图的判读

2027届一轮复习专题5 地球的宇宙环境

2027届一轮复习专题6 地球的历史和圈层结构

2027届一轮复习专题7地球的自转与公转特征

2027届一轮复习专题8 黄赤交角及其影响

2027届一轮复习专题9 昼夜交替、时差、地转偏向力

2027届一轮复习专题10 昼夜长短的变化

2027届一轮复习专题11 正午太阳高度、太阳视运动

2027届一轮复习专题12 月相

2027届一轮复习专题13 大气的组成和垂直分层、逆温

2027届一轮复习专题14 大气的受热过程

2027届一轮复习专题15 热力环流

2027届一轮复习专题16 大气的水平运动

2027届一轮复习专题17 锋与天气

2027届一轮复习专题18 天气系统

2027届一轮复习专题19 特殊天气

2027届一轮复习专题20 气压带与风带、季风环流

2027届一轮复习专题21 影响气候的自然因素

2027届一轮复习专题22世界主要的气候类型

2027届一轮复习专题27海水的运动

2027届一轮复习专题23水循环与人类活动

2027届一轮复习专题24水量平衡原理

2027届一轮复习专题25陆地水体及其相互关系

2027届一轮复习 专题28海气互相作用

2027届一轮复习专题29内力作用

2027届一轮复习 专题30外力作用

2027届一轮复习 专题33植被与植被演替

2027届一轮复习专题34  土壤

2027届复习专题37:山地垂直地域分异规律

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  1. CONNECT:[ UseTime:0.000703s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000954s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000465s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000351s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000657s ]
  6. SELECT * FROM `set` [ RunTime:0.000274s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000740s ]
  8. SELECT * FROM `article` WHERE `id` = 532726 LIMIT 1 [ RunTime:0.000416s ]
  9. UPDATE `article` SET `lasttime` = 1793613692 WHERE `id` = 532726 [ RunTime:0.001531s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000403s ]
  11. SELECT * FROM `article` WHERE `id` < 532726 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000416s ]
  12. SELECT * FROM `article` WHERE `id` > 532726 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000359s ]
  13. SELECT * FROM `article` WHERE `id` < 532726 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000526s ]
  14. SELECT * FROM `article` WHERE `id` < 532726 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000784s ]
  15. SELECT * FROM `article` WHERE `id` < 532726 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000715s ]
0.085428s