When enough should be enough: Improving the use of current agricultural lands could meet production demands and spare natural habitats in Brazil

Autor: Agnieszka E. Latawiec, Judson Ferreira Valentim, Vanderley Porfírio da Silva, Luis Gustavo Barioni, Carlos A. Nobre, Murilo dos Santos Vianna, Eduardo Delgado Assad, Bernardo B. N. Strassburg
Přispěvatelé: BERNARDO B. N. STRASSBURG, International Institute for Sustainability e PUC/RJ, AGNIESZKA E. LATAWIEC, International Institute for Sustainability / Opole University of Technology / University of East Anglia, LUIS GUSTAVO BARIONI, CNPTIA, CARLOS A. NOBRE, National Institute for Space Research, VANDERLEY PORFIRIO DA SILVA, CNPF, JUDSON FERREIRA VALENTIM, CPAF-AC, MURILO VIANNA, CNPTIA, EDUARDO DELGADO ASSAD, CNPTIA., Bernardo B. N. Strassburg, International Institute for Sustainability/Pontificia Universidade Catolica, Agnieszka E. Latawiec, International Institute for Sustainability/Opole University of Technology/University of East Anglia, Carlos A. Nobre, Instituto Nacional de Pesquisas Espaciais (Inpe), Murilo Vianna, Embrapa Informática Agropecuária
Rok vydání: 2014
Předmět:
Zdroj: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice)
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
ISSN: 0959-3780
DOI: 10.1016/j.gloenvcha.2014.06.001
Popis: Providing food and other products to a growing human population while safeguarding natural ecosystems and the provision of their services is a significant scientific, social and political challenge. With food demand likely to double over the next four decades, anthropization is already driving climate change and is the principal force behind species extinction, among other environmental impacts. The sustainable intensification of production on current agricultural lands has been suggested as a key solution to the competition for land between agriculture and natural ecosystems. However, few investigations have shown the extent to which these lands can meet projected demands while considering biophysical constraints. Here we investigate the improved use of existing agricultural lands and present insights into avoiding future competition for land. We focus on Brazil, a country projected to experience the largest increase in agricultural production over the next four decades and the richest nation in terrestrial carbon and biodiversity. Using various models and climatic datasets, we produced the first estimate of the carrying capacity of Brazil's 115 million hectares of cultivated pasturelands. We then investigated if the improved use of cultivated pasturelands would free enough land for the expansion of meat, crops, wood and biofuel, respecting biophysical constraints (i.e., terrain, climate) and including climate change impacts. We found that the current productivity of Brazilian cultivated pasturelands is 32–34% of its potential and that increasing productivity to 49–52% of the potential would suffice to meet demands for meat, crops, wood products and biofuels until at least 2040, without further conversion of natural ecosystems. As a result up to 14.3Gt CO2 Eq could be mitigated. The fact that the country poised to undergo the largest expansion of agricultural production over the coming decades can do so without further conversion of natural habitats provokes the question whether the same can be true in other regional contexts and, ultimately, at the global scale.
Databáze: OpenAIRE
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