民勤盆地水资源可持续利用对策——2000年民勤水资源利用调查

水资源短缺和生态环境恶化已成为民勤绿洲面临的严重问题。本文在分析民勤盆地水资源特点及开发利用中存在的问题的基础上,本着水资源可持续利用的原则,从加强水资源保护与管理,发展节水农业生产体系,以及开源调水和减少人口等方面,提出了水资源可持续利用途径与措施。

Water Resources Sustainable Utilization Countermeasures in Minqin Basin of Gansu Province

Water resources are the key factors of the oasis's ecological balance. Economy development in Minqin basin is plagued with water resources shortage. In recent several decades, because water used for agriculture and industry is increasing in the middle reaches of Shiyang river, surface water becomes less and less in Minqin basin in the lower reaches. In order to maintain agriculture production, people need more groundwater and groundwater over exploitation has worsened Minqin's ecology environment. If not taking effective steps to deal with water utilization, this oasis will change into desert because of water shortage after some time. The paper analyses features of water resources, current situations and problems of water utilization, estimates roughly the tendency to develop of the oasis. Based on this analysis, some countermeasures for water resources sustainable utilization was put forth according to water resources management and utilization, agriculture development and ecology protection etc. These countermeasures and advices can provide theoretical basis for the rational exploitation and utilization of water resources, economy development and ecology building in Minqin basin. The conclusions are (1) Tightening up the management of water resources through administration, economic levers and law;(2)Adjusting cropping structure, adopting water saving irrigation methods and developing " Sha chan ye "to set up a water saving agriculture system;(3) Using waste water and salt water, finding new groundwater, transporting water from outside as well;(4) Controlling population growth and Moving out to relax pressure of oasis's ecology;(5)Building irrigation works to save water and control saline soil;and(6)Planting trees and grass to protect ecological environment.