Research and Prospect of the Water Environment Restoration in wetlands
湿地水环境生态恢复及研究展望

Abstract: Water environmental degradation of wetlands is an important issue facing the world. Currently, the ecological restoration techniques which include ecological ditch system with interception function, wetland plant purification technology, aquatic animals purification technology , floating island constructed for water purification, constructed wetlands for wastewater treatment etc., are mainly applied in wetland water environment, supplemented by physical and chemical recovery, in order to restore the damaged structure and function of ecological systems and promote healthy ecological succession. Its main advantage is that pollution can be degraded or removed in situ and it can keep the operation simple and efficient, the operating costs low, and a disturbance small to the surrounding environment. Such technology in the United States and Japan has been successfully applied to wastewater treatment. However, China is still at an early stage. Based on these, future research will focus on water pollution tolerance of aquatic plants and combination of a variety of ecological restoration. Some typical wetland wastewater treatments should be established as a demonstration projects to integrate the various restoration techniques .Meanwhile, the development of technical standards and the improvement of health assessment system in wetland water environment restoration will provide theoretical and technical support for wide range of application in China.