Question

 Explain the role of agrobiodiversity in climate change-food security nexus.

08 Sep 2025
Answer :
Word Count : 1416
Agrobiodiversity, which refers to the variety and variability of animals, plants, and microorganisms used directly or indirectly for food and agriculture, plays a pivotal role in linking climate change and food security. The intricate relationship between these three domains underscores the importance of maintaining diverse agricultural systems to ensure resilience in the face of a rapidly changing climate. Climate change is altering precipitation patterns, increasing the frequency of extreme weather events, and shifting pest and disease dynamics. These changes directly affect crop yields, livestock health, and overall agricultural productivity, posing significant challenges to global food security. Agrobiodiversity, by enhancing ecological resilience, provides a buffer against these impacts, thereby sustaining food production systems and contributing to nutrition security. One of the most direct ways agrobiodiversity contributes to climate resilience is through the diversification of crops and livestock. Traditional and locally adapted varieties often possess traits that allow them to tolerate drought, heat, salinity, and other climate-related stresses. For instance, landraces of cereals like millet, sorghum, and teff are more drought-tolerant compared to widely cultivated commercial varieties. By maintaining a pool of genetically diverse crops, farmers can select species that are more resilient under adverse climate conditions, reducing the risk of total crop failure. Similarly, diverse livestock breeds exhibit variability in disease resistance, heat tolerance, and feed efficiency, which allows pastoral and mixed farming systems to continue providing food and livelihoods despite environmental shocks. Agrobiodiversity also enhances ecosystem services, which are essential for sustainable food production under climate change. Pollination, nutrient cycling, soil fertility, water regulation, and pest control are all supported by diverse species in agricultural landscapes. For example, diversified cropping systems, including intercropping and agroforestry, can reduce pest outbreaks and disease incidence without relying heavily on chemical inputs, which are themselves vulnerable to supply disruptions and environmental degradation. Soil health benefits from agrobiodiversity through crop rotations and the incorporation of legumes that fix nitrogen, improving fertility and water retention. Healthy soils, in turn, mitigate the impacts of erratic rainfall and extreme weather events, ensuring a more stable base for food production. Moreover, agrobiodiversity contributes to dietary diversity and nutrition security, which is a critical ______ ___ ______ ____ ______ ________ ________ _________.
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