一、教材分析西北地区是中国区域地理教材中介绍的第三个区域,它与我国东部季风区中的北方地区和南方地区有明显的差异。它深居内陆,东西距离很长,区内多高原盆地,这种位置和地形决定了本区越往西距离海洋越远,受海洋的影响越小。所以,气候干旱是本区最突出的自然特征,从而形成 I. Analysis of Teaching Materials The Northwest Region is the third region introduced in China’s regional geography textbooks. It differs significantly from the northern and southern regions in the eastern monsoon region of China. It is located deep inland and has a long distance from east to west. There are multi-plateau basins in the area. This position and topography determine that the farther west the area is from the ocean, the less affected by the ocean. Therefore, climate drought is the most prominent natural feature of the area