Crescimento económico, termos de troca e desempenho comercial na Tanzânia

uma análise de séries temporais (1987-2023)

Autores

DOI:

https://doi.org/10.4314/academicus.v4i1.3%20

Palavras-chave:

Crescimento económico, Termos de troca, Desempenho comercial, Modelo de Gravidade Aumentada, Hipótese de Prebisch-Singer, ARDL, Tanzânia

Resumo

Este estudo examina a relação entre o crescimento económico, os termos de troca e o desempenho comercial da Tanzânia no período de 1987 a 2023. Preenchendo uma lacuna importante na literatura, que frequentemente negligencia seus efeitos combinados, o estudo visa avaliar a interação dinâmica entre essas variáveis. Guiada pela Hipótese de Prebisch-Singer e pelo modelo gravitacional aumentado, a análise emprega a abordagem de teste de limites do Modelo Autorregressivo de Defasagem Distribuída (ARDL) para capturar as dinâmicas de curto e longo prazo, complementada pela análise de causalidade de Granger. Os resultados revelam que a apreciação da taxa de câmbio impacta negativamente o desempenho comercial, enquanto o crescimento económico e a qualidade da governança têm efeitos positivos e significativos no longo prazo. Os termos de troca têm um impacto positivo no curto prazo, indicando uma influência limitada dos preços globais das commodities no longo prazo. As tarifas alfandegárias reduzem o desempenho comercial, enquanto o desenvolvimento da infra-estrutura o aprimora. Os resultados da causalidade de Granger confirmam relações bidirecionais entre comércio e PIB, enfatizando a interdependência entre comércio e indicadores macroeconómicos. O estudo conclui que a melhoria da eficácia institucional, da estabilidade macroeconômica e das reformas estruturais são cruciais para aprimorar o desempenho comercial. As recomendações de políticas incluem o fortalecimento da governança, o investimento em infraestrutura, a promoção da diversificação das exportações e a manutenção de uma taxa de câmbio competitiva.

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Publicado

2026-01-19

Como Citar

Mbwambo, S. K. (2026). Crescimento económico, termos de troca e desempenho comercial na Tanzânia: uma análise de séries temporais (1987-2023). Academicus Magazine, 4(1), 25–40. https://doi.org/10.4314/academicus.v4i1.3