Articole | | Încărcat de: Avidesh Seenath
Will green flood defences work?
The question of how to defend the world’s coastlines becomes more urgent and more complicated as climate change accelerates.
Rising sea-levels and increasingly intense storms threaten nearly a billion people in low-lying zones. Many governments are therefore rethinking their reliance on traditional “grey” infrastructure, such as seawalls, groynes, and breakwaters.
These engineered defences are costly to maintain, often ecologically damaging, and known to unintentionally shift erosion and flood risk to downstream areas interrupting natural sediment flows.
Robust
In response, nature-based coastal solutions such as mangroves, saltmarshes, and seagrasses are increasingly gaining traction and being promoted as a more sustainable and adaptable alternative to buffer coastlines from flooding.
These systems can slow waves, trap sediments, store carbon, and support biodiversity. In theory, they offer a holistic solution: climate defence that also heals ecosystems. But a growing body of research is warning that the story is more complicated.
