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青海省海南藏族自治州,位于青海湖南畔,黄河由南向北回流经过,辖共和、贵德、贵南、同德、兴海5个县和龙羊峡。面积4万1千多平方公里,其中草原面积占总面积的87.0%,海拔200～4900米。本区山陵纵横,大部份系高寒草甸草原和半荒漠草原。气候干燥寒冷,无霜期较短。气温最高34℃,最低零下36.2℃,年均温5℃,年降雨量300～400毫米,为大陆性气候。土壤多为栗钙土、灰钙土、漠钙土、盐渍土和沙质土。黄河沿岸谷地海拔低于3,000米,气候较微湿,无霜期在100天以上,生长小麦、青稞、油菜、洋芋、豆类、瓜果等。
Qinghai Province, Hainan Tibetan Autonomous Prefecture, located in Qinghai Lake, the Yellow River flows from south to north, jurisdiction over the Republic, Guide, Guinan, Tongde, Xinghai 5 counties and Longyangxia. An area of 41000 square kilometers, of which grassland area accounts for 87.0% of the total area, 200 to 4900 meters above sea level. The vertical and horizontal hills here, most of the alpine meadow and semi-desert steppe. Dry and cold climate, frost-free period shorter. The highest temperature of 34 ℃, the lowest minus 36.2 ℃, the average annual temperature of 5 ℃, the annual rainfall of 300 to 400 mm, for the continental climate. Soil mostly chestnut soil, calcareous soil, desert calcareous soil, saline soil and sandy soil. Yellow River valley below 3,000 meters above sea level, the climate is slightly wet, frost-free period of more than 100 days, the growth of wheat, barley, rape, potato, beans, fruits and so on.