Question

为什么西北地区农田、村镇、城市在本区呈带状或点状分布？
                                                                                                                                                                
                                                                                                                                                                
                                                                                                                                                                
                                                                                                                                                                

Answer 1

本区气候干旱，沙漠广布，水的分布是制约当地生产和居民分布的关键因素。人们的生产和生活大多近水而作，择水而居。东部主要集中在黄河沿岸平原，如宁夏平原、河套平原，呈带状分布；西部多沙漠，在沙漠边缘，人们依靠来自高山冰雪融水和地下水发展了绿洲农业，这些绿洲大多呈点状。因此，西北地区农田、村镇、城市在本区呈带状或点状分布；铁路线的分布都是沿着绿洲和黄河谷地延伸，如兰新线、包兰线，其工矿区自然呈带状分布。