Optimal allocation of nature-based solutions to achieve climate mitigation and adaptation goals

People and Nature

article

Jaramar Villarreal-Rosas¹  Jonathan R. Rhodes¹  Laura J. Sonter¹  Hugh P. Possingham²  Adrian L. Vogl⁴ 

[1] School of Earth and Environmental Sciences, The University of Queensland;Centre for Biodiversity and Conservation Science, The University of Queensland;School of Biological Sciences, The University of Queensland;Natural Capital Project, Stanford University

关键词: carbon sequestration;    disaggregation of beneficiaries;    ecosystem services;    Nepal;    sediment retention;    spatial prioritization;   

DOI  :  10.1002/pan3.10481

学科分类：护理学

来源: Wiley

【 摘 要 】

1. Nature-based solutions (NbS) can prevent further climate change and increaselocal communities' capacity to adapt to the current impacts of climate change.However, the benefits obtained from implementing NbS are not distributedequally across people. Thus, it is key to further understand how people are impacted when implementing NbS.2. We developed a multi-objective prioritization approach to identify changes in (i)the biophysical provision of ecosystem services, (ii) optimal allocation of NbS and(iii) monetary benefits when targeting climate mitigation versus climate adaptation goals. We used the increase in metric tons of carbon storage as representative of climate mitigation and the decrease in on-site and downstream tons ofsediment per year as representative of climate adaptation.3. Planning strategies that target climate mitigation or climate adaptation goals separately represent a loss of between 30% and 60% of the maximum possible carbon sequestration or sediment retention benefits. Conversely, targeting climatemitigation and climate adaptation goals at the same time captured more than 90%of the maximum possible benefits for all objectives.4. Priority NbS in the mitigation planning strategy included soil and water conservation and forest rehabilitation, while priority NbS in the adaptation planning strategy included grassland rehabilitation and hill terrace improvement.5. Targeting mitigation and adaptation goals at the same time captures 35M USD(89% of the maximum attainable) in value of carbon restored and retained, and2M USD (100% of the maximum attainable) of avoided maintenance costs to theKGA hydropower plant. Conversely, failing to incorporate adaptation goals whendeveloping climate plans only captures 1M of avoided maintenance costs to theKGA hydropower plant.6. Our approach can be replicated in other locations to promote cost-effective investments in NbS able to secure both global and local benefits to people. This canimprove the outcomes of international climate change financial schemes like theGreen Climate Fund and the UN-REDD+ program.

【 授权许可】

CC BY