AUTHOR=van der Vliet Mendy , Malbeteau Yoann , Ghent Darren , Haas Sander de , Veal Karen L. , van der Zaan Thijs , Sinha Rajiv , Dash Saroj K. , Houborg Rasmus , de Jeu Richard A. M. TITLE=Quantifiable impact: monitoring landscape restoration from space. A regreening case study in Tanzania JOURNAL=Frontiers in Environmental Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2024.1352058 DOI=10.3389/fenvs.2024.1352058 ISSN=2296-665X ABSTRACT=

The impact of ecosystem conservation and restoration activities are rarely monitored from a global, multidimensional and multivariable perspective. Here we present an approach to quantify the environmental impact of landscape restoration using long-term and high-resolution satellite observations. For two restoration areas in Tanzania, we can likely attribute an increase in the amount of water retained by the soil (∼0.01 m³ m⁻³, ∼13% average increase), a soil temperature drop (∼-0.5°C) and an increase in surface greenness (∼50% average increase) in 3.5 years. These datasets illuminate the impact of restoration initiatives on the landscape and support the reporting of comprehensive metrics to donors and partners. Satellite observations from commercial providers and space agencies are now achieving the frequency, resolution, and accuracy that can allow for the effective evaluation of restoration activities.