Research and Teaching :: Yoro-diallo

Working papers

DIALLO Yoro (Work in progress), "Natural disasters impact on growth dynamic in small states"

DIALLO Yoro and TAPSOBA Rene (Work in progress), "Climate Shocks and Domestic Conflicts in Africa"

DIALLO Yoro (Publishing process), "Impact of climate and environmental risks on food security in Vietnamese rural areas: multidimensional analysis and endogeneity issues"

Abstract:

Vietnam is a country with a high environmental and climate risks and agri-culture remains the key sector that employs rural households. In this study, weanalyze the association between two types of risks (environmental and climate) andfood security of rural households. Food security is understood in all its four dimen-sions (availability, accessibility, diversity and stability) through composite index.In addition, we deal with endogeneity concern of some risk variables (deforestationand pollution), which could hinder these links, using control function method byWooldridge(2015). Our identification strategy is implemented with data from thethree latter VHLSS waves (2010-2012-2014) and high resolution georeferenced datafor risks variables. Results show that climate and environmental risks are amongthe main factors that slowed down Vietnamese rural households' ability to achievea better nutritional status in all its dimensions and the magnitude and significanceof this link depends on the nature of the risk on the one hand and the dimensionof food security considered on the other. Then, political intervention is needed tomake rural households more resilient to these risks factors.

Keywords:Climate change, Environment, Risk, Food security, Vietnam

JEL classifications:D24, O12, Q12, Q54

DIALLO, Y., S. MARCHAND and E. ESPAGNE (2019), "Impacts of Extreme Climate Events on Technical Efficiency in Vietnamese Agriculture", AFD Research Papers Series, No. 2019-100, March.

Abstract:

The aim of this study is to examine farm household-level impacts of weather extreme events on Vietnamese rice technical efficiency. Vietnam is considered among the most vulnerable countries to climate change, and the Vietnamese economy is highly dependent on rice production that is strongly affected by climate change. A stochastic frontier analysis is applied with census panel data and weather data from 2010 to 2014 to estimate these impacts while controlling for both adaptation strategy and household characteristics. Also, this study combines these estimated marginal effects with future climate scenarios (Representative Concentration Pathways 4.5 and 8.5) to project the potential impact of hot temperatures in 2050 on rice technical efficiency. We find that weather shocks measured by the occurrence of floods, typhoons and droughts negatively affect technical efficiency. Also, additional days with a temperature above 31°C dampen technical efficiency and the negative effect is increasing with temperature. For instance, a one day increase in the bin [33°C-34°C] ([35°C and more[) lessen technical efficiency between 6.84 (2.82) and 8.05 (3.42) percentage points during the dry (wet) season.

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