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【题目】回答下列各题:

(1)三江源头自然保护区位于________省,三江是指________、________和________三条大河。

(2)西北地区自东向西依次出现森林草原、草原、荒漠草原和荒漠景观,请判断塔里木盆地属于________景观,造成这种差异的原因是什么? ________

(3)青藏地区农作物主要分布在雅鲁藏布江谷地和湟水谷地的最主要因素是 。

【答案】(1)青海;长江;黄河;澜沧江(2)沙漠;自西向东受海洋暖湿气流影响越来越小,降水逐渐减少(3)河谷地区海拔较低,气温较高,且有充足的水源

【解析】本题考查青藏地区与西北地区地理概况。(1)三江源头自然保护区位于青海省,三江是指长江、黄河、澜沧江三条大河。(2)西北地区自西向东受海洋暖湿气流影响越来越小,降水逐渐减少,故自东向西依次出现森林草原、草原、荒漠草原和荒漠景观,塔里木盆地位于新疆境内,位于西北地区的最西部,故其主要为荒漠景观。(3)青藏地区地势高、气温低,该地区的河谷地区海拔较低、气温较高、且有充足的水源,是其主要农业区。该地区的主要农业区为在雅鲁藏布江谷地和湟水谷地。

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