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1自然条件1.1概况开封市古称东京汴梁,地处黄河下游,中原腹地,是中国八大古都之一,全市总面积6266 km~2,总人口553万人,其中耕地面积36.34万hm~2,气候温和,自然地理条件优越,交通便利,土地肥沃。水利工程设施分为灌溉和排水两大体系,排水系统境内有贾鲁河、惠济河、涡河,灌溉系统有赵口引黄灌区、三义寨引黄灌区、柳园口引黄灌区和黑岗口引黄灌区。随着近年来极端天气状况增多,降雨减少,旱情呈现持续发
1 Natural Conditions 1.1 Overview Kaifeng City, formerly known as Tokyo 汴 beam, is located in the lower reaches of the Yellow River and the hinterland of the Central Plains. It is one of the eight ancient capitals in China. The total area of the city is 6,266 km 2, with a total population of 5,530,000, of which 363,400 ha of cultivated land, Gentle climate, excellent natural and geographical conditions, convenient transportation, fertile land. Water conservancy facilities are divided into two major systems of irrigation and drainage, the drainage system within the Jialu River, Huiji River, Eddy River, irrigation system Zhao mouth Yellow Irrigation District, Sanyi Village Yellow River Irrigation District, Liuyuankou Yellow River Irrigation District and Hegang The Yellow River irrigation mouth area. With the increase of extreme weather conditions in recent years and the decrease of rainfall, the drought has continued to occur