Nav: Home

Researchers develop new EcoCity model for mitigating urban heat islands

June 06, 2017

Urban land-use/cover changes and their effects on the eco-environment have long been an active research topic in the urbanization field. Prof. KUANG Wenhui's group at the Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, has developed the EcoCity model for regulating urban land cover structures and thermal environments, and has established eco-regulation thresholds for urban surface thermal environments.

This research has shown that the difference in thermal environments among urban functional areas is closely related to the proportion of land-cover components. This work was published in Science China Earth Sciences.

The EcoCity model is based on the multidisciplinary integration of urban geography, urban climatology and urban ecology. The model is closely linked to "spatial location theory" in urban geography, "radiation and energy balance" in urban climatology, and provided the parameterization program for regulating land-cover components and thermal environment in urban planning and management application.

The EcoCity model can simulate the future urban expansion under different scenarios and predict the proportions of urban impervious surface areas and greenness, and the induced urban heat island effect. The core function of this model is the spatially-explicated information acquisition, including the proportion of impervious surface areas in different functional zones, the intensity of urban heat island, and the indexes of human comfort degree.

The results provide fundamental data for regulating the impervious surface ratios in different functional zones and supporting urban heat island mitigation in future urban expansion.

Using Beijing as a study area, the researchers found significantly different surface temperatures in different functional zones, especially between urban impervious surfaces and green space. What's more, the temperatures in various surface covers were different.

"The difference in thermal environments among various urban functional zones is closely related to the composition of major land covers," said Prof. KUANG.

"The analysis of ecological thresholds of impervious surfaces and green space within various functional zones shows their different roles in thermal regulation effects. The urban-rural frontier and urban interior structure are characterized by high dynamics, structural complexity, and land-cover mosaics, resulting in challenges in obtaining accurate results for urban land cover components."

The EcoCity model and associated high-precision data and map products have been applied in different fields such as environmental protection, urban planning, and earthquake recovery.
-end-


Chinese Academy of Sciences Headquarters

Related Green Space Articles:

Largest study ever finds that urban green space can prevent premature deaths
The study provides robust evidence that may help policy makers estimate the impact of increasing green space in cities.
Beyond the green revolution
There has been a substantial increase in food production over the last 50 years, but it has been accompanied by a narrowing in the diversity of cultivated crops.
A filament fit for space -- silk is proven to thrive in outer space temperatures
Scientists from the universities of Oxford, Shanghai and Beijing who discovered that natural silks get stronger the colder they get, have finally solved the puzzle of why.
Green space is good for your mental health -- the nearer the better!
Living within 300m of urban green space such as parks, nature reserves or play areas is associated with greater happiness, sense of worth, and life satisfaction -- according to a new study by researchers at the University of Warwick, Newcastle University and the University of Sheffield.
'Green' taxes
A comparative analysis has shown that 'indirect' instruments, such as excise taxes on motor fuel and other energy taxes, did not yield any lesser impact than their 'direct' counterparts, and, over time, were even more effective.
How is urban green space associated with mental health?
This observational study looked at how green space is associated with mental health.
It's not easy being green
Despite how essential plants are for life on Earth, little is known about how parts of plant cells orchestrate growth and greening.
Mapping global impervious surface area and green space within urban environments
What the spatial pattern of global urban surface area that human depends on is the important issue, which is widely concerned at present.
Sometimes it's not good to be green
The greening or eutrophication of the world's lakes will increase the emission of methane into the atmosphere by 30 to 90 percent during the next 100 years, say authors of a March 26, 2019 paper in Nature Communications.
Neighborhoods with more green space may mean less heart disease
People who live in neighborhoods with more green spaces may have better blood vessel health and lower levels of stress, and a lower risk of cardiovascular diseases such as heart attacks, strokes and others.
More Green Space News and Green Space Current Events

Top Science Podcasts

We have hand picked the top science podcasts of 2019.
Now Playing: TED Radio Hour

In & Out Of Love
We think of love as a mysterious, unknowable force. Something that happens to us. But what if we could control it? This hour, TED speakers on whether we can decide to fall in — and out of — love. Guests include writer Mandy Len Catron, biological anthropologist Helen Fisher, musician Dessa, One Love CEO Katie Hood, and psychologist Guy Winch.
Now Playing: Science for the People

#543 Give a Nerd a Gift
Yup, you guessed it... it's Science for the People's annual holiday episode that helps you figure out what sciency books and gifts to get that special nerd on your list. Or maybe you're looking to build up your reading list for the holiday break and a geeky Christmas sweater to wear to an upcoming party. Returning are pop-science power-readers John Dupuis and Joanne Manaster to dish on the best science books they read this past year. And Rachelle Saunders and Bethany Brookshire squee in delight over some truly delightful science-themed non-book objects for those whose bookshelves are already full. Since...
Now Playing: Radiolab

An Announcement from Radiolab