摘要
本文首先主要按水分条件对实验区内的土地进行了分类,然后又对1987—1988年度实验区的绿洲部分进行宏观的水平衡分析。分析表明,在张掖、临泽及高台绿洲带内年总散发量为585.3mm,接近于北京地区年降水量为625mm的生态环境。在该绿洲带内灌耕地的净耗水量平均为358.3m^3/亩,可作为绿洲地区合理用水的参考标准。
Heihe experimental region is almost a closed water balance area. The inflow water includes river flow and groundwater runoff which are coming from out of the boundary of the region, and the total precipitation at the same area. The out flow water includes the river runoff and underflow at the Zheng Yi Xia hydrological station, and the total evapotranspiration from the experimental area. The variable of reservoir storage of ground water in the Oasis is without consideration, Because it is neglected. In this paper, the analysis of macroscopic water balance over the Oasis zone of Heihe experimental region in the 1987/1988 year has been made. The results show that: the annual water consumption over the Oasis zone in the year is about 585.3 mm; and over the irrigating and farm land area of the Oasis zone very like the ecology enviroment of annual rainfall of 625 mm over Beijing area. Thus we can say that the evapotranspiration amount of about 600 mm is the existence condition for a good Oasis. Here, the net water consumption is about 358.3m^3/mu in the irrigating and farming land area of the Oasis zone. Although, it is hardly to say that it is the best economic level of the water consumption in the Oasis, it is an important reference standard for the reasonable use of water at the irrigating area in the future.
出处
《高原气象》
CSCD
北大核心
1990年第2期202-212,共11页
Plateau Meteorology
关键词
水
平衡
土地
分类
绿州带
灌耕地
Classification of land use
Oasis zone
Irrigating and farming land
Water balance analysis
