论文部分内容阅读
甘肃省张掖市地处祖国西北内陆腹地,河西走廊中段,海拔1200～5565m,气候复杂多变,光照充足,温差较大,夏季短而炎热,冬季长而寒冷,,干燥少雨且分布不均,年平均气温5～8℃,冰封期5个月,无霜期40～165d,为典型的大陆型温带干旱气候。区内有大小河流26条,中小型水库46座,水域面
Zhangye City, Gansu Province is located in the hinterland of the northwest of the motherland, the middle Hexi Corridor, elevation of 1200 ~ 5565m, the climate is complex and changeable, adequate lighting, large temperature difference, summer is short and hot, long and cold in winter, dry and rain less distributed , The annual average temperature of 5 ~ 8 ℃, ice period of 5 months, frost-free period 40 ~ 165d, a typical continental temperate arid climate. There are 26 rivers in the area, 46 small and medium sized reservoirs and water areas