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【题目】比较西北地区和青藏地区,完成下列表格。

西北地区

青藏地区

主要自然特征

___________

高寒

主要地形

高原和盆地为主

___________为主

河流

河流稀少,多季节性河流,有我国最长的内流河③___________

河流众多,是我国许多河流的发源地

种植业

灌溉农业

___________

制约农业发展的主要因素

___________不足

___________不足

主要的气候类型

_______________

_______________

【答案】干旱 高原 塔里木河 河谷农业 淡水(水资源) 热量 温带大陆性气候 高山高原气候

【解析】

我国幅员辽阔,自然环境复杂多样,形成了各具特色的地理区域.在中国地图上,把秦岭-淮河线、400毫米年等降水量线和青藏高原边缘线这三条重要的地理界线结合起来,并根据实际情况作一定的调整,就把我国划分为四大地理区域,即北方地区、南方地区、西北地区和青藏地区。

西北地区主要自然特征干旱,主要地形是高原和盆地为主,河流稀少,多季节性河流,有我国最长的内流河是塔里木河,属于灌溉农业制约农业发展的主要因素淡水不足,主要的气候类型温带大陆性气候;

青藏地区主要自然特征高寒,主要地形高原为主,河流众多,是我国许多河流的发源地,种植业为河谷农业,制约农业发展的主要因素是热量不足,主要的气候类型是高山高原气候。

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