(浙江专用)2018_2019学年高中地理第四章人类与地理环境的协调发展学科素养学案湘教版必修2.docx

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1第四章 人类与地理环境的协调发展背景资料青田县位于浙江省东南部,瓯江流域的中下游,素有“九山半水半分田”之称。该县传承千年的“稻鱼共生”系统被联合国粮农组织评为“全球农业文化遗产保护项目” 。农民在山脚下用泥土堆起田埂,引溪水灌溉稻田,鱼啄食杂草与小虫,在稻田里自然生长。交流讨论1试说明该地区普遍采用“稻鱼共生”生产方式的自然原因。答案 山地多,耕地资源有限;位于亚热带季风气候区,水热充足;河湖众多,水源充足等。2 “稻鱼共生系统”体现了生态可持续发展的理念,说明其具体表现。答案 水稻田为田鱼提供生存环境、食物;田鱼为水稻除草、吞食害虫、耘田松土;稻鱼共生减少了化肥、农药和饲料的投入等。近年来,古老的稻田养鱼方式正在发生着转变:一些农户用水泥浇筑田埂防止漏水,通过施用化肥、农药和投入精饲料等措施提高水稻、田鱼产量,并开发以稻鱼共生文化为核心的农业观光活动,农民收入得到增加。3说明产生上述转变的社会经济条件,并说明该转变对当地产生的影响。答案 社会经济条件的变化;农业技术的进步;市场需求扩大等。影响:提高稻田产量;丰富农业生产方式;提高经济效益;提高农民收入,增加就业机会;不利于农业传统文化的传承;可能导致生态破坏等。

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