【題目】比較西北地區(qū)和青藏地區(qū),完成下列表格。
西北地區(qū) | 青藏地區(qū) | |
主要自然特征 | ①___________ | 高寒 |
主要地形 | 高原和盆地為主 | ②___________為主 |
河流 | 河流稀少,多季節(jié)性河流,有我國最長的內流河③___________ | 河流眾多,是我國許多河流的發(fā)源地 |
種植業(yè) | 灌溉農業(yè) | ④___________ |
制約農業(yè)發(fā)展的主要因素 | ⑤___________不足 | ⑥___________不足 |
主要的氣候類型 | ⑦_______________ | ⑧_______________ |
【答案】干旱 高原 塔里木河 河谷農業(yè) 淡水(水資源) 熱量 溫帶大陸性氣候 高山高原氣候
【解析】
我國幅員遼闊,自然環(huán)境復雜多樣,形成了各具特色的地理區(qū)域.在中國地圖上,把秦嶺-淮河線、400毫米年等降水量線和青藏高原邊緣線這三條重要的地理界線結合起來,并根據實際情況作一定的調整,就把我國劃分為四大地理區(qū)域,即北方地區(qū)、南方地區(qū)、西北地區(qū)和青藏地區(qū)。
西北地區(qū)主要自然特征干旱,主要地形是高原和盆地為主,河流稀少,多季節(jié)性河流,有我國最長的內流河是塔里木河,屬于灌溉農業(yè)制約農業(yè)發(fā)展的主要因素淡水不足,主要的氣候類型溫帶大陸性氣候;
青藏地區(qū)主要自然特征高寒,主要地形高原為主,河流眾多,是我國許多河流的發(fā)源地,種植業(yè)為河谷農業(yè),制約農業(yè)發(fā)展的主要因素是熱量不足,主要的氣候類型是高山高原氣候。
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