Dr. ZHANG Cheng
Director, ICFM Permanent Secretariat
IWHR/CDPR
Sep 11, 2023
Sub-theme: Special Session - Promoting Investment in Disaster Risk Reduction and Climate Change Adaptation - Policies and Innovative Approaches for a Resilient Future
About 10~15% additional investment needs to be increased for reconstruction projects, 1 billion is a lever. The average investment amount is RMB100~150 million per square kilometer, which is directly related to the level of planning and design.
Sponge cities involve multiple disciplines and a wide range of departments, with misunderstanding between them, inadequate understanding and outdated concepts. These hinder the development of sponge cities. It involves such disciplines as water supply and drainage, planning, landscaping, structure, roads, cost, etc.
Sponge city should never be to blame for the waterlogging in urban areas. A sponge city cannot be built up overnight, and it is not omnipotent either.
We should be problem-oriented and address such issues as water resource utilization, improving quality and efficiency in sewage treatment, treatment of dirty and odorous water bodies, urban waterlogging prevention and control, while weakening some indicators such as the total runoff control.