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一、前言安徽省位于我国东南部低海拔地区,跨东径114°54′-119°37′,北纬29°22′-34°38′,总面积十三万九千多平方公里。长江、淮河两大水系横贯省内,将全省自然划分为淮北(皖北)、江淮之间(皖中)和江南(皖南)三个区域,年平均气温在14°-16°之间,南北温差2°左右。淮北为辽阔的淮北平原,系黄淮海平原之一部分,海拔在20-40米,江淮之间多起伏丘陵,大别山蜿蜒于西南,东部丘陵区海拔
I. INTRODUCTION Anhui Province is located at a low elevation in the southeastern part of China with a total area of 139,000 square kilometers spanning 114 ° 54’-119 ° 37 ’east longitude and 29 ° 22’-34 ° 38 ° north latitude. The two major river systems of the Yangtze River and Huaihe River run across the province, dividing the province into three regions, namely, Huaibei (North Anhui), Jianghuai (Anhui) and Jiangnan (Wannan). The average annual temperature is between 14 ° -16 °, North and south temperature difference of 2 °. Huaibei is the vast plain of Huaibei, part of the Huang-Huai-Hai Plain, 20-40 meters above sea level, with many ups and downs between the JAC, Dabie Mountains meandering in the southwest, the eastern hilly area elevation