Mapping socio-biodiversity: do old modelling tools suit new challenges?
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Universidade Federal de Minas Gerais
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This work shows an original use of classical methods in land change modelling. The aim of this study is to model yields (productivity) and economic importance (annual rents) of rubber and Brazil nut in the Brazilian Amazon. Biophysical variables related to rubber and Brazil nut yields as well as market access (commercialization) were used to model favorability of productivity using Weights of Evidence (WofE) method. To favorability of productivity were assigned yields base on case study data. The economic model then combines the map of yields with output prices and costs of collection, processing, and transport to estimate annual rents per hectare for a specific forest plot. For estimating transport costs we used cost friction surface modelling tools. Our results show that yields for Brazil nut averages 8.19±7.41 kg ha-1year-1 and rent averages US$ 5.05±7.49 ha-1year-1. Rubber average yields is of 3.53 kg/ha/year and rubber rents average US$ 0.56±0.7ha-1year-1. Coupling biophysical a nd economic models allowed us to explore which environmental and governance improvements are needed to avoid deforestation and forest degradation in the Brazilian Amazon. Our results also show that despite some methodological issues and the recurrent call for “new” modelling approaches for addressing the complexity of socio ecological systems, “old” modelling tools such as Weight of Evidence and Cost Friction Surface, are still suited for addressing the challenge of mapping socio-biodiversity.
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Reservas extrativistas, Produtos florestais não madeireiros, Ecologia
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Extractivist Landscapes, Non Timber Forest Products, Weights of Evidence, Cost Friction
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https://www.scitepress.org/PublicationsDetail.aspx?ID=0uBydNBeIPU%3d&t=1