论文部分内容阅读
贺兰山并不高,海拔1500米至3500米。贺兰山也不长,东北西南走向,250千米。贺兰山在中国地理上,意义很重要,是中国夏季风影响范围的分界,是年降水量200毫米等降水量线的重要分水岭。从贺兰山向北望去,我们可以看到雄浑苍茫、一望无际的阿拉善草原……
Helan Mountain is not high, 1500 meters above sea level to 3500 meters. Helan Mountain is not long, northeast southwest, 250 km. Helan Mountain, in geography of China, is of great significance. It is the boundary of the impact range of China’s summer monsoon and an important watershed for the precipitation line of 200 mm of annual precipitation. Looking north from the Helan Mountains, we can see the vast, endless Alashan steppe ...