Question

為什么西北地區(qū)農(nóng)田、村鎮(zhèn)、城市在本區(qū)呈帶狀或點(diǎn)狀分布？
                                                                                                                                                                
                                                                                                                                                                
                                                                                                                                                                
                                                                                                                                                                

Answer 1

本區(qū)氣候干旱，沙漠廣布，水的分布是制約當(dāng)?shù)厣�產(chǎn)和居民分布的關(guān)鍵因素。人們的生產(chǎn)和生活大多近水而作，擇水而居。東部主要集中在黃河沿岸平原，如寧夏平原、河套平原，呈帶狀分布；西部多沙漠，在沙漠邊緣，人們依靠來(lái)自高山冰雪融水和地下水發(fā)展了綠洲農(nóng)業(yè)，這些綠洲大多呈點(diǎn)狀。因此，西北地區(qū)農(nóng)田、村鎮(zhèn)、城市在本區(qū)呈帶狀或點(diǎn)狀分布；鐵路線的分布都是沿著綠洲和黃河谷地延伸，如蘭新線、包蘭線，其工礦區(qū)自然呈帶狀分布。