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甘肃河西地区灌溉农业历史悠久,是我国内陆著名的灌溉农业区,全市耕地面积27万km~2,其中,灌溉农田面积占75%,“素有甘肃粮仓”之称,是甘肃省主要的商品粮基地和经济作物集中产区。由于全球气候变暖,降水减少,人口增加,水资源过度开采,利用效率低,设施落后等原因,使石羊河流域来水量逐年下降,造成地下水位下降、荒漠化程度加剧,流域下游生态环境的呈恶化趋势,引发绿洲生态系统退化,严重影响到石羊河流域农业生产、生态环境和粮食安全。
The irrigation agriculture in Hexi of Gansu Province has a long history and is a well-known irrigated agricultural area inland of our country. The city has a cultivated area of 270,000 km 2, of which 75% of irrigated farmland is “known as Gansu granary” The main commodity grain base and cash crop production areas. Due to global warming, precipitation reduction, population increase, over-exploitation of water resources, inefficient use of facilities and backward facilities, the water quantity in Shiyang River basin decreases year by year, resulting in the decrease of groundwater table, aggravation of desertification, and the ecological environment in the lower reaches of the basin Showing a deteriorating trend and causing the degradation of oasis ecosystems, seriously affecting the agricultural production, ecological environment and food security in the Shiyang River Basin.