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以徐州市为中心苏、鲁、豫、皖四省接壤地区的范围,一般指东起江苏连云港,北到山东济宁,西临河南商丘,南至安徽蚌埠。这个地区在历史上已经形成经济联系比较密切的商业经济区,通常称为淮海经济区,目前包括江苏的徐州、连云港、淮阴、盐城,山东的枣庄、临沂、荷泽、济宁、泰安,河南的商丘、周口,安徽的淮北、宿县、阜阳蚌埠,共15个地、市的103个县(市),面积15.9万km~2,人口8700多万。这一地区突的优势是煤炭资源丰富,有鲁西南、苏北、两淮、豫东永城煤田,包括兖州、济宁、滕县、枣庄、徐州、大屯、淮北、淮南、永城等九个矿区。因此形成了以徐州市为中心,以煤炭工业为主体的经济区。
Xuzhou as the center of the Soviet Union, Shandong, Henan and Anhui provinces bordering the scope of the region generally refers to the east Lianyungang, Jiangsu Province, north to Jining, Shandong Province, west of Shangqiu in Henan Province, Anhui Bengbu south. The region has historically formed a commercial economic zone with relatively close economic ties, commonly known as the Huaihai Economic Zone. Currently it includes Xuzhou, Lianyungang, Huaiyin and Yancheng in Jiangsu, Zaozhuang, Linyi, Heze, Jining, Taian and Henan Shangqiu, Zhoukou, Huaibei, Suxian, Bengbu, Fuyang, a total of 15 to 103 counties (cities), an area of 159,000 km ~ 2, a population of 8700 million. The advantage of this area is that the coal resources are abundant. There are nine coalfields in southwestern, northern Jiangsu, two Huaihe and eastern Yongcheng, including nine in Yanzhou, Jining, Tengxian, Zaozhuang, Xuzhou, Datun, Huaibei, Huainan and Yongcheng A mining area. Therefore, Xuzhou City, as the center, the coal industry as the main economic zone.