Study of the Impact of Global Warming on the Productivity and Human Comfort of Workers of Farmers' Organizations in the Sahelian Zone of Cameroon

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The objective of this work is to characterize the impact of heat wave situations on the productivity and human comfort of workers in peasant organizations in the Cameroonian Sahel zone. The Active Method of Participatory Research and Planning (MPRP) made it possible to collect socio-economic data through a series of 250 questionnaires. With Microsoft Office Excel, R and SPSS software, the descriptive analysis of the data consisted of calculating proportions (percentages, means and standard deviations), and creating graphs and tables. Overall, 3.85±0.83 women/hectare and 6.73±1.18 men/hectare work on a farm in the semi-arid Sahelian zone. In the dry season, a light work intensity of 156 watts induces a need for rest periods each hour in men starting at a WBGT of 30 °C, with a cumulative of 5±0.5 hours of rest during work times. While in women, a light work intensity of 156 watts induces a need for rest periods every hour at a WBGT of 30°C, with a cumulative 4.5±0.1 hours of rest during work times. During the dry season, the metabolic heat generated by physical activity in women in humid areas is 42.33±1.86°C and 42.32±1.17°C in semi-arid areas while in men in humid zones, it is 44.21±0.51°C and 45.69±1.66°C in semi-arid zones. These impacts of heat wave situations on the productivity and human comfort of workers in farmer organizations will provide a tool for managing heat wave risks in the Cameroonian Sahel environment.

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