There are many definitions for nature-based solutions (NBS), but the most widely used and accepted comes from the International Union for Conservation of Nature (IUCN). According to IUCN, nature-based solutions are actions to protect, sustainably manage, and restore natural or modified ecosystems, that address societal challenges, effectively and adaptively, simultaneously providing human well-being and biodiversity benefits. Nature-based solutions often emphasize the restoration, conservation, and sustainable management of ecosystems, while also considering the well-being of human communities.
Nature-based solutions can be utilised for wastewater treatment, for example constructed wetlands or willow systems. Check out the video below to find out more.
Nature-based solutions can also have a key role to play in agricultural water management, improving the water smartness of food systems. Keyline design is a land planning and management technique that originated from the work of Australian farmer and engineer P.A. Yeomans in the mid-20th century. The keyline design approach focuses on identifying and working with the natural topography of the land to maximize water retention and distribution. The keyline refers to a contour line that represents the natural flow of water across a landscape. By identifying and mapping keylines, practitioners can design systems that capture and distribute water more effectively. Check out the video below for an example of keyline design to retain water within the landscape.