Tourists visit the National Fujin Wetland Park in Fujin, northeast China's Heilongjiang Province, Aug. 20, 2014. More than half of the National Fujin Wetland Park is based on wetlands recovered from artificially cultivated farmlands, which for a time devastated the area's eco-system. Nearly 600 animal and plant species now live in the wetland park. (Xinhua/Wang Jianwei)