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《生态系统的自我调节》课件,案例素材丰富

  • 2026-04-10 04:51:42
《生态系统的自我调节》课件,案例素材丰富

《生态系统的自我调节》课件，案例素材丰富

适用年级和教材版本：胡老师苏教版七下课件

【课件内容介绍】
1️⃣本节课以“狼”的视角观察到的森林大火后的恢复现象，思考森林的这种“超能力”,引入本节课生态系统的自我调节的学习。

2️⃣开头以讨论活动为主，让学生小组合作分析非洲大草原、热带雨林生态系统、草原生态系统等维持相对稳定的原因。比较出生物的种类和数量，及食物网结构的复杂程度与生态系统自我调节能力的强弱有密切关系，除此以外，人为因素也会影响自我调节能力。

3️⃣再通过调查活动，分析本例生态系统受到破坏的实例，进一步理解生态系统的自我调节能力是有一定的限度。

4️⃣最后，通过跨学科实践活动，设计并制作能较长时间维持平衡的生态瓶，通过科学探究的方法，通过控制单一变量，探究生态系统维持相对稳定的原因；理解建模时一种科学思维，提升学生的核心素养。

👉【课件获取方式】
点我购买：胡老师的生物七下课件
点我购买《生态系统的自我调节》课件

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  1. CONNECT:[ UseTime:0.000408s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000684s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000598s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000271s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000469s ]
  6. SELECT * FROM `set` [ RunTime:0.000173s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000578s ]
  8. SELECT * FROM `article` WHERE `id` = 486605 LIMIT 1 [ RunTime:0.000375s ]
  9. UPDATE `article` SET `lasttime` = 1775971677 WHERE `id` = 486605 [ RunTime:0.001065s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000193s ]
  11. SELECT * FROM `article` WHERE `id` < 486605 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000489s ]
  12. SELECT * FROM `article` WHERE `id` > 486605 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000370s ]
  13. SELECT * FROM `article` WHERE `id` < 486605 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000548s ]
  14. SELECT * FROM `article` WHERE `id` < 486605 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001289s ]
  15. SELECT * FROM `article` WHERE `id` < 486605 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001439s ]
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