晋西黄土丘陵区,北起右玉,南至乡宁,共28个县,是我国西北黄土高原的组成部分,也是黄河中游水土流失最严重的地区。历史上,这个地区曾经是森林茂密、牧草遍野的绿洲。据《春秋》记载,春秋战国时,石楼、岚县、静乐、娄烦等县,畜牧业都很发达,是著名的产马的地方。又据《山西通志》记载,“兴县合查山……为诸山之 In western Shanxi loess hilly region, there are 28 counties in the north from Youyu to the south and Xiangning, which is an integral part of the Northwest Loess Plateau in China and also the area with the most serious soil erosion in the middle reaches of the Yellow River. Historically, this area used to be an oasis of dense forests and pastures. According to “Spring and Autumn” records, the Spring and Autumn Period, the Shilou, Lan County, Jingle, Lou ann and other counties, animal husbandry are well developed, is the famous place of birth. According to “Shanxi Annals” records, "Hing County co-Hill ... ... for the mountains