(一)在我国华北平原的东部、黄河下游、北临渤海、东濒黄海、广袤千里的区域,以其独特的地貌特征和气候特点构成一个相对独立的地理单元:中部耸立着海拔1000—1500米的泰、鲁、沂、蒙等群山峻岭,峰峦联绵向四周形成低山丘陵,黄河在西北部斜贯而流入渤海,源出泰沂山系的主干河流及支流组成扇形水网,潍、猕、淄诸水北流入渤 (1) In the east of China’s North China Plain, the lower reaches of the Yellow River, the Bohai Sea to the north, the Yellow Sea to the east and the vast reaches of thousands of miles, it constitutes a relatively independent geographical unit with its unique topography and climatic features: the middle stands an elevation of 1000-1500 Meters of Taihe, Lu, Yi, Mongolia and other mountains, mountains and valleys around the formation of the formation of hilly mountains, the Yellow River in the north-west and run into the Bohai Sea, the Taiyiyishan source of the main river and tributaries form fan-shaped water network, Wei , Ki, Zi Zhu water flows into the north Bo