The Study Of Dynamic Movement Of Water And Salt In Soil Nearby Campestris Reservoirs Of Arid And Semiarid Region

Campestris reservoirs plays an vital role in terms of people's production and living in arid and semiarid oasis, especially at XINJIANG where campestris reservoir take over 90% in total reservoirs. After a campestris reservoir is completed, the water table of the neighbouring region rises following the changes of the reservoir's water table , causing the immersion, sinking, wetland and saline becoming of the surrounding area. The study of dynamic movement of water and salt in soil nearby campestris reservoirs is significative for regional production in agriculture , both theoretically and practically. In this study , an example of LIUCHENGZI reservoir in FUKANG 222 corps has been employed to analyse the movement of water and salt in soil using different methods and determine the range of the movement of water and salt in soildue to the effect of the reservoir. The results are as below : 1. The movement of water and salt in soil has been greatly affected by the reservoir in the water exit .However, there are comparatively less influence at other sides of the reservoir. 2. The range of which the movement of water and salt in soil can be affected by the reservoir is directly proportional to the difference between the reservoir water table and the ground water table and is inversely proportional to the friction coefficient of ground water in the soil. 3.Vertically,the water content of the soil is decreasing from bottom to top and that the salinity distribution follows the water distribution ,namely , over the surface of the ground ,therefore the salt content of the soil is increasing from bottom to top. 4.Horizontally, the water content and the salt content of the soil are both dropping from the reservior to the outward area. 5.The reservior lifts up the ground water table of the circumjacent...