Wuxi special

1. Topographic features: Wuxi is dominated by plains, with scattered low mountains and residual hills. The south is the plain of water network; North high sand plain; The middle part is a water network polder field composed of lowlands; Southwest is a high-lying area with low mountains and hills in Yixing. The prototype of Wuxi landform was formed in the Cathaysian structure in Indosinian period (about 65.438+0.8 billion years ago), which made Wuxi area fold into land.

2. Main climatic characteristics: Wuxi belongs to the humid monsoon climate zone in the north subtropical zone, with four distinct seasons, abundant heat, abundant precipitation and the same season of rain and heat. Summer is controlled by the summer monsoon from the ocean, with southeast wind prevailing and hot and rainy weather; Winter is controlled by the prevailing winter wind in Chinese mainland, with more northerly winds; Spring and autumn is a period of alternating winter and summer monsoon, with changeable weather in spring and fresh air in autumn.

3. Characteristics of water resources: There are more than 3 100 rivers in Wuxi, with a total length of 2,480 kilometers. The total length of urban rivers is 150km, and the water volume in peacetime is 8 million cubic meters. Taihu Lake is the center of the water network in the south of the Yangtze River, with an area of 2338.6438+0 square kilometers and a total storage capacity of 4.428 billion cubic meters, with an annual average of about 5.2 billion cubic meters. Therefore, Wuxi is rich in surface water and adequate in external water supply. The urban reserve is 63.49 million cubic meters and the annual supply is 64.53 million cubic meters.