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一、引言本文所指之沂、沐河流域系指沂河、沭河流域的山东境内部分~①,行政区划上包括临沂市的三区九县及淄博市的沂源县和日照市的莒县。该区位于山东省东南部,介于东经117°24′~119°11′、北纬34°22′~136°23′之间,山东境内控制流域面积17253平方千米。沂河发源于沂蒙山区沂源县鲁山南麓,先流向东南,至沂水县转南,经沂南、兰山区、河东区、罗庄区、郯城至江苏境内入骆马湖。河道全长386千米,其中山东境内干流全长287.5千米,流域面积10772平方千米。沭河发源于沂水县沂山南麓,顺山
I. INTRODUCTION The “Yi River” and “Muhe River Basin” refer to some parts of Shandong Province in the Yihe River and Shuhe River Basin in the article. ① The administrative divisions include the three districts and nine counties in Linyi City, Yiyuan County in Zibo City and Yi County in Rizhao . The area is located in the southeastern part of Shandong Province, between longitude 117 ° 24 ’to 119 ° 11’ east longitude and latitude 34 ° 22 ’~ 136 ° 23’ north latitude, with a control basin area of 17,253 km2 in Shandong. Yi River originated in Yimeng Mountain Yiyuan County Lushan south, the first flow to the southeast, Yishui County to the south, via Yinan, Lanshan, Hedong District, Luozhuang District, Tancheng to Jiangsu into Luoma Lake. The total length of the river is 386 km, of which the total length of the trunk river in Shandong is 287.5 km and the drainage area is 10,772 km 2. Shuhe originated in Yishan County, Yishui South Foothill