Assessing land-based mitigation implications for biodiversity

Bibliographic Data

ID12666205
AuthorsSarahi Nunez (0000-0003-3558-1768, Wageningen University & Research, corresponding author), J Verboom (0000-0001-7733-148X, Wageningen University & Research), Rob Alkemade (0000-0001-8761-1768, Netherlands Environmental Assessment Agency)
Year2020
Volume106
Pages68-76
Publication date2020-01-31
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueEnvironmental Science & Policy (JOURNAL)
Journal identifiersISSN: 1462-9011 • E-ISSN: 1873-6416
PublisherElsevier BV (PUBLISHER)
DOI10.1016/j.envsci.2020.01.006
OpenAlexW3003793110
LanguageEN
Citations received4
References cited51

The Paris Agreement to keep global temperature increase to well-below 2 °C and to pursue efforts to limit it to 1.5 °C requires to formulate ambitious climate-change mitigation scenarios to reduce CO2 emissions and to enhance carbon sequestration. These scenarios likely require significant land-use change. Failing to mitigate climate change will result in an unprecedented warming with significant biodiversity loss. The mitigation potential on land is high. However, how land-based mitigation options potentially affect biodiversity is poorly understood. Some land-based mitigation options could also counter the biodiversity loss. Here we reviewed the recently scientific literature to assess twenty land-based mitigation options that are implemented in different mitigation pathways to comply with the Paris Agreement for their biodiversity impacts by using the Mean Species Abundance (MSALU) indicator for land use. We showed the likely land-use transition and potential MSALU changes for each option, compared their carbon sequestration opportunities (tC per ha) and assessed the resulting biodiversity change in two case scenarios. Our results showed that most options benefit biodiversity. Reforestation of cultivated and managed areas together with restoration of wetlands deliver the largest MSALU increases, if land is allowed to reach a mature state over time. A quarter of the assessed options, including intensification of agricultural areas and bioenergy with carbon capture and storage, decreased MSALU. Options, such as afforestation and reduced deforestation, either positively or negatively affected MSALU. This depends on their local implementation and adopted forest-conservation schemes. Comparing the different options showed that avoiding deforestation by implementing agroforestry at the expense of pastures delivered both the largest MSALU increases and the highest carbon sequestration opportunities. However, agroforestry that leads to deforestation, enhanced carbon sequestration slightly but with a marginal MSALU increase. This stresses the importance of avoiding forest conversion. Our study advances the understanding on current and future benefits and adverse effects of land-based mitigation options on biodiversity. This certainly helps biodiversity conservation and determines the regions with large land-based mitigation potential

Afforestation · Agricultural land · Agriculture · Agroforestry · Biodiversity · Carbon dioxide · Carbon sequestration · Climate change · Climate change mitigation · Deforestation (computer science · Ecosystem · Ecosystem services · Environmental resource management · Geography · Global warming · Greenhouse gas · Land use · Land use, land-use change and forestry · Natural resource economics · Reforestation · Conservation, Biodiversity, and Resource Management · Environmental Conservation and Management · Environmental Science · Forest Management and Policy · Ecology

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