Nanjing's plane position is long from north to south and narrow from east to west, forming a positive north-south direction; The straight-line distance between north and south is150km, the east-west width in the middle is 50-70km, and the east-west width at the north and south ends is about 30km. The southern part is a landform complex composed of low mountains, hills, valley plains, lakeside plains and rivers along the river. ?
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The water area of Nanjing is more than 1 1%, including Qinhuai River, Jinchuan River, Xuanwu Lake, Mochou Lake, Baijia Lake, Shijiu Lake, Gucheng Lake and Jinniu Lake. The Yangtze River passes through the city with a coastline of nearly 200 kilometers. * * * There are large and small rivers 120, belonging to two rivers (Yangtze River, Qingyijiang-Shuiyangjiang), two lakes (Gucheng Lake, Shijiu Lake) and two rivers (Chuhe River and Qinhuai River). The water system is divided into four parts: Nanjing section of the Yangtze River, Chuhe River, Qinhuai River and Qingyijiang-Shuiyangjiang River.
Nanjing, located in the north subtropical zone, is rich in modern plant resources and has a wide variety of plants. The forest coverage rate is 29.6%, the green coverage rate of the built-up area is 45%, and the per capita public green area is 13.7 square meters, ranking the top three in China. It is one of the four major garden cities in China and is known as the "Green Capital". There are nearly 50 species of deciduous broad-leaved forests such as Quercus acutissima, Quercus variabilis, Liquidambar formosana, Toona sinensis and Tilia amurensis, as well as evergreen broad-leaved trees such as Cyclobalanopsis glauca, Castanopsis sclerophylla and Ilex.
Baidu Encyclopedia-Nanjing