Abstract
The degradation of vegetation cover and the vulnerability of urban market gardening systems to climate risks are a major challenge for food security in peri-urban areas. This study analyzes the spatio-temporal dynamics of vegetation using the NDVI and assesses its correspondence with producers’ perceptions of hydroclimatic impacts. NDVIs were extracted from the MODIS MOD13Q1v6.1 product via Google Earth Engine, with a spatial resolution of 250 m × 250 m and a temporal resolution of 16 days, then processed in Python v3.14.0 using the xarray library. Additionally, 369 producers in Grand Nokoué were surveyed about the risks of flooding, drought, and heat waves, as well as the adaptation strategies they implement. The results reveal a decline in areas with a moderate to high NDVI (between 0.41 and 0.81) and an expansion of areas with a low or very low NDVI (below 0.41), reflecting increased fragmentation and degradation of vegetation cover. Producers’ perceptions confirm this vulnerability and reveal different strategies depending on the type of crop and risk, including irrigation, temporary abandonment of plots, agroforestry, and the adoption of resilient crops. These observations highlight the need to implement targeted policies and appropriate agroecological practices in order to strengthen the resilience of urban market gardening systems to extreme climate risks.
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Claims 5
Claim · model-written summary
Areas with moderate to high NDVI (0.41 to 0.81) declined.
Verbatim
e0“The degradation of vegetation cover and the vulnerability of urban market gardening systems to climate risks are a major challenge for food security in peri-urban areas”
e1“The results reveal a decline in areas with a moderate to high NDVI (between 0.41 and 0.81)”
Claim · model-written summary
Areas with low or very low NDVI (below 0.41) expanded.
Verbatim
e0“The degradation of vegetation cover and the vulnerability of urban market gardening systems to climate risks are a major challenge for food security in peri-urban areas”
e2“an expansion of areas with a low or very low NDVI (below 0.41)”
Claim · model-written summary
Producers reported different adaptation strategies depending on crop type and risk, including irrigation, temporary abandonment of plots, agroforestry and resilient crops.
Verbatim
e4“reveal different strategies depending on the type of crop and risk, including irrigation, temporary abandonment of plots, agroforestry, and the adoption of resilient crops”
Claim · model-written summary
Producers perception confirms the vulnerability of the market gardening system to climate risks.
Verbatim
e0“The degradation of vegetation cover and the vulnerability of urban market gardening systems to climate risks are a major challenge for food security in peri-urban areas”
e3“perceptions confirm this vulnerability”
Claim · model-written summary
Targeted policies and agroecological practices are needed to strengthen the resilience of urban market gardening systems to extreme climate risks.
Verbatim
e0“The degradation of vegetation cover and the vulnerability of urban market gardening systems to climate risks are a major challenge for food security in peri-urban areas”
e5“in order to strengthen the resilience of urban market gardening systems to extreme climate risks”