Assessment of Climate Technology Demands in Chinese Sponge City

Abstract

Sponge city is a development pattern used to realize natural accumulation, natural infiltration and natural purification of rainwater through urban planning and construction management. Sponge city technology is widely used as the critical approaches in natural rainwater management and it is one of the best techniques to adapt climate change events in modern cities. In the paper, we firstly reviewed background information of sponge city construction and the development, key technologies, and economic benefit analysis of stormwater management in foreign countries. Then, we analyzed the technology gap between China and developed countries in two aspects (planning design method and Low Impact Development (LID) project design). Then, we pointed out the main obstacles in sponge city technology transfer and proposed to improve the basic data sharing system and strengthen the economic return system. On the basis of sponge city planning theory and sponge city technologies, taking Shenzhen as an example, we analyzed the ideas and plans of sponge city construction in rainy areas and completed the assessment of current climate technology demands in Chinese sponge city. The study provides the basis for the improvements in sponge city construction and adaptation to climate change.

A review of the progress in Chinese Sponge City programme: challenges and opportunities for urban stormwater management

“…The main basis for regional division is the daily rainfall, which may neglect the impact of different climate and soil conditions and geographic location on runoff generation, leading to inefficient local SCP planning (Xia et al 2017b). In the actual construction of the SCP, many local governments focus on the single indicator control of the annual average runoff amount, while ignoring evapotranspiration and storage, which are equally important hydrological processes in the urban water cycle (Ma et al 2017). The Peak Runoff of a rainfall event is a very relevant item to whether the city will experience waterlogging.…”

Uso inteligente de recursos naturais e sustentabilidade na construção civil

“…Essa nova abordagem para o gerenciamento de águas pluviais utiliza procedimentos de controle multi-objetivo que buscam restaurar o ciclo hidrológico natural de águas pluviais (LI; WANG, 2015) sendo uma das melhores técnicas para adaptar os eventos de mudanças climáticas e utilizar de modo inteligente os recursos naturais em ambientes urbanos (MA et al, 2017). -Período de retorno detalhado: o projeto deve abranger chuvas e inundações com período de retorno distintos (com previsão de eventos de pequeno a grande porte).…”

Research on constructing sponge city indicator and decision evaluation model with fuzzy multiple criteria method

“…For example, the best management practices (BMPs) in the United States pay attention to the nonpoint source pollution control, and low impact development (LID) uses a combination of site design and the measures for pollution prevention. Australia's water sensitive design (WSUD) emphasizes the combination of rainwater and urban planning (Faragò, Brudler, Godskesen, & Rygaard, 2019; Hoyer et al, 2011; Ma et al., 2017; Prince George's County 1999). Therefore, in this circumstance, the construction of the sponge city needs corresponding evaluation system, to provide information support for the government to formulate urban development strategies to cope with climate change and adjust urban planning, which can help Taiwan cities to better play their advantages in the context of global climate change to develop into healthy and safe ecological cities.…”