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子午岭林区是我国黄土高原面积最大、保存最为完整且最具代表性的一片天然次生林,横跨陕、甘两省,因与本初子午线方向一致,故称子午岭,也是甘肃省庆阳市面积最大的
Ziwuling area is the largest and best preserved natural secondary forest in the Loess Plateau in China. It stretches across Shaanxi and Gansu Provinces because it is consistent with the original meridian direction. Therefore, it is also called Ziwuling, The largest city