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祖国的东北地区包括辽宁、吉林、黑龙江省全部和内蒙古自治区东部三盟一市,总面积124万平方公里。东北地区的北部为黑龙江(包括松花江和乌苏里江),东南部有鸭绿江、图们江和绥芬河,南部有辽河和直接入海的大、小凌河及大洋河、碧流河等河流。全区人口1亿,耕地2.8亿亩,林地8亿亩,多年平均地表迳流量1,776亿立米,地下水初步估算,可采量为359亿立米,装机500千瓦以上的可开发的水力资源1.361万千瓦。松花江和辽河是我国七大江河中的两条,横贯东北地区的北部和南部,流域面积分别为54.6万平方公里和
The northeast of the motherland includes all Liaoning, Jilin and Heilongjiang provinces and one alliance city in the eastern part of Inner Mongolia Autonomous Region with a total area of 1,240,000 square kilometers. The northern part of Northeast China is Heilongjiang (including the Songhua River and Wusuli River), the Yalu River, the Tumen River and the Suifenhe River in the southeast, the Liaohe River and the large Linghai, Dalonghe, Biliuhe and other rivers directly into the sea in the south. The region has a population of 100 million, cultivated land of 280 million mu and forest land of 800 million mu. The average surface flow over many years is 177.6 billion cubic meters. Groundwater is initially estimated at a recoverable volume of 35.9 billion cubic meters. The hydropower resources available for development with an installed capacity of 500 kilowatts is 136.1 thousand kilowatts . The Songhua River and Liaohe River are two of the seven major rivers in our country, traversing the northern and southern parts of the northeastern region with a catchment area of 546,000 square kilometers and