Land is sinking underneath millions of peoples’ feet in China’s major...

CNN Climate 2 years ago

Land is sinking underneath millions of peoples’ feet in China’s major cities due to human activities, putting the country’s coastal areas more at risk of flooding and rising sea levels, new research shows. Nearly half of China’s urban areas comprising 29% of the country’s population are sinking faster than 3 millimeters (about 0.12 inches) per year, according to the study published Thursday in the journal Science. That’s 270 million people living on sinking land. China’s rampant groundwater extraction is one of the primary factors for subsidence, researchers said. Cities have been pumping water from underground aquifers faster than it can be replenished, a situation exacerbated by climate change-fueled drought. Excessive pumping lowers the water table and causes the overlying land to sink. The land is also sinking due to the growing weight of cities themselves. Soil can compact, naturally from the weight of sediments accumulating over time and from heavy buildings pressing down on the ground, causing the land to steadily sink. Read more at the link in our bio. 📸: AFP/Getty Images

layersDaily Sustainability Digest

Published about 2 hours ago



Sustainable construction is entering a decisive phase as Europe and the UK embed environmental sustainability in construction regulations that advance low carbon design and net zero carbon buildings. The Future Homes Standard’s focus on heat pumps highlights an essential shift in sustainable building design where insulation performance determines true energy efficiency. Whole life carbon and embodied carbon have become central benchmarks through which the carbon footprint of construction is measured, driving policy and procurement.

The RAAC concrete crisis has amplified the need for whole life carbon assessment and lifecycle assessment of materials to ensure resilience, safety and compliance in public estates. The reconstruction of affected schools demonstrates progress toward circular economy in construction and underlines the necessity of low embodied carbon materials in rebuilding efforts.

Economically, the rapid decline in renewable costs is changing the life cycle cost profile of projects, reinforcing renewable integration as a risk management tool rather than a reputational exercise. Developers are incorporating eco-design for buildings and resource efficiency in construction to mitigate exposure to fossil fuel price volatility while meeting net zero whole life carbon goals. The sector’s embrace of BREEAM v7 and whole life thinking solidifies sustainable building practices across design and delivery.

London’s research community warns that the loss of urban tree cover threatens green infrastructure and the environmental impact of construction projects, urging planners to adopt sustainable urban development and circular construction strategies. The Royal Mail’s decarbonisation of its estate illustrates how even legacy institutions can achieve carbon footprint reduction through low carbon building upgrades and energy-efficient buildings. At the global level, the UN’s record climate transparency submissions strengthen the momentum for decarbonising the built environment through environmental product declarations (EPDs), sustainable material specification and end-of-life reuse in construction.

A genuine alignment of economics, regulation and cultural commitment now defines sustainable architecture. The sector’s strategic emphasis on whole life carbon, circular economy principles and green construction signals not a trend but a structural shift toward carbon neutral construction and enduring sustainability.

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