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【题目】青藏地区因地势高耸而成为一个独特的地区。青藏地区平均海拔在4000米以上,有世界屋脊之称,许多山峰终年积雪,冰川广布,雪山连绵。据此回答以下小题。

1】青藏地区最突出的自然环境特征是

A. 湿热 B. 光热充足 C. 高寒 D. 冬冷夏热

2】(小题2)青藏地区的种植业主要分布在

A. 藏北高原 B. 昆仑山山区

C. 柴达木盆地 D. 湟水谷地和雅鲁藏布江谷地

【答案】

1 C

2 D

【解析】

1】青藏地区的主体是号称世界屋脊的青藏高原。主要包括西藏自治区、青海省、四川省西部。是世界海拔最高的高原地形,典型的高原山地气候,气候垂直分布十分显著。高原上雪山连绵、冰川广布。所以青藏地区最突出的自然环境特征是高寒。所以本题选择C选项。

2】青藏高原气候高寒,只有河谷地带由于地势较低,气温较高,无霜期长,土壤比较肥沃,又有河水作为灌溉水源,因而适宜耕作,成为农业发达地带,被称为河谷农业,主要分布在青藏高原地区,以青海的湟水谷地、西藏的雅鲁藏布江谷地也就是藏南谷地最典型。所以本题选择D选项。

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