Study On Optimized Allocation Of Water Resource In Heihe Basin

Heihe is the second biggiest inland river in china. During a very long time, the downriver has a tendency of water lessening ,forest death, grassland degeneration and desert extending and thus make it become the head area of desertification of North China because of population explosion, economic development and the increased water demand of the middle reaches of Heihe basin.Based on the actuality of the water resource exploitation of Heihe basin, questions were brought forward, study of inside and outside of countries actualities on water resource optimized allocation were sum up and the social ,economic and entironmental data related to Heihe water resource optimized allocation were collected, cleared up and analysed. So the water demand of Heihe basin was analysed and forcasted. At the same time, the water resource optimized allocation modle was built and the related scheme was achieved which has important referenced worth in realizing water resource optimized allocation in Heihe basin. The main results are as following:(1) The golden rules and objectives of water resource optimized allocation of Heihe basin were put forward, and then 5 schemes in 2010 level year were formed which established base to putting the scheme in practice.(2) Linked to the saving rebuilt of industrial and agricultural growth structures, lives, production and entironmental demand were forecasted in the method of ration and thegeneral water demand was lessened 16.9% from 42.01 hundred million steres now to 34.93 hundred million steres in 2010,which considered as reasonable and accorded with basin facts.(3) LPM was built which embodied the objective of minimizing the general water lack of the basin. Material processes and related formula were put forward by Genetic Arithmetic which enriched water resource optimized allocation methods.(4) Six schemes in the status year and 2010 level year were achieved by long series data and IPM after mass operation. After study on realizing harmony, water demand assuring ratio, the degree of water resource exploitation and utilization of distibute in water power, lives, production and environmental water demand through each scheme, and evaluating on sustained carrying capacity of water resource, coefficient on development ,harmony, sustainability were emphasesed and finally the fifth scheme was selected as the optimized scheme of water resources. Overall, the results gained in the paper have important guidance meaning in realizing water resource optimized allocation in Heihe basin.