宁夏黄土高原主要分布在自治区南部,除小部分与陕西定边相接外,大部分与甘肃的环县、镇原、静宁、会宁等县相邻。面积约2.1万平方公里,占全区面积的40.45%;年降水量在350～500毫米,而且降水分配不均,主要集中在7、8、9三个月,占全年降水量的54～55%,而对农、林、牧生产影响 The Ningxia Loess Plateau is mainly located in the southern part of the autonomous region, with the exception of a small part connecting with Dingbian in Shaanxi Province, most of which are adjacent to the county of Huanxian, Zhenyuan, Jingning and Huining in Gansu. Covering an area of ​​about 21,000 square kilometers, accounting for 40.45% of the total area; annual precipitation of 350 to 500 mm, and the uneven distribution of precipitation, mainly concentrated in 7,8,9 three months, accounting for the annual rainfall of 54 ~ 55%, while the impact of farming, forestry and animal husbandry