Agro-Ecological Zones (AEZs) by Food and Agriculture Organization (FAO)
The Food and Agriculture Organization (FAO) divides the world into agro-ecological zones based on climate, soil, and topography to identify areas with similar agricultural production potential. Each zone is characterized by a unique set of biophysical conditions that influence crop suitability, land use patterns, and agricultural practices.
Definition:
An agro-ecological zone is a geographical area with specific characteristics of climate, soil, and other abiotic factors that determine the potential for agricultural production, including types of crops, livestock, and other agricultural activities.
Classification System:
FAO's AEZ classification system has multiple levels:
- Major Agro-Ecological Zone (MAE): Based on broad climatic conditions, such as tropical, sub-tropical, temperate, and cold climates.
- Agro-Ecological Zone (AEZ): Subdivided within MAEs based on temperature, precipitation, and other climatic factors.
- Agro-Climatic Zone (ACZ): Further division based on soil, topography, and water availability.
- Land Resource Unit (LRU): The smallest unit, characterized by specific soil and slope conditions.
Objective:
The purpose of agro-ecological zone classification is to provide a framework for:
- Assessing agricultural potential and identifying suitable land for crops and livestock.
- Developing targeted agricultural policies and interventions based on specific environmental conditions.
- Improving land use planning and natural resource management.
- Enhancing agricultural productivity and sustainability.
Examples:
- Tropical AEZ: Warm temperatures throughout the year, high precipitation, and fertile soils suitable for a wide range of crops, such as bananas, sugarcane, and coffee.
- Temperate AEZ: Seasonal variations in temperature, moderate precipitation, and diverse soil types, supporting crops like wheat, corn, and apples.
- Arid AEZ: Low precipitation and limited water availability, suitable for drought-tolerant crops and livestock grazing.
- Mountainous AEZ: Steep slopes, varied temperatures, and limited soil fertility, requiring specific agricultural practices and erosion control measures.
Importance:
Agro-ecological zone classification is crucial for:
- Optimizing agricultural production and reducing environmental impacts.
- Enhancing climate change adaptation and resilience by selecting crops and farming practices suited to specific climatic conditions.
- Promoting sustainable agriculture and reducing land degradation.
- Supporting food security and improving the livelihoods of farmers.