Effects of Jinan-Heze Expressway on Flood Detention Function of Daotunwa Wetland in China on Remote Sensing Techniques

The location map of Daotunwa Wetland and Jinan-Heze expressway was created based on 3S technology in order to study the relationship among wetland area, its flood storage capacity and the Jinan-Heze expressway construction. The results showed that Jinan-Heze expressway covered 0.11 km 2 of the Daotunwa wetland, thus it could be inferred that the wetland water volume would decrease 0.011 × 109 m 3 . Although the expressway could introduce a loss to the wetland flood storage capacity, the effect of expressway on detention function of wetland is negligible. However, since the Jinan-Heze expressway divides the Daotunwa wetland into two parts (the west 26.5 km 2 ,the east 0.75 km 2 ), the effects of flood on expressway could be obvious, in cases that the flood was/is at the speed level of 7000 m 3 /s in the Shangliuze hydrologic station