What are the ecological zones?
An ecological zone is a landscape unit that unites certain interrelated animal and plant communities (biocenosis) with a particular social formation and environmental conditions as part of an integrated system. The definition of an ecological [Page 844]zone relies on flexible criteria.
How many agro ecological zones are there?
20 agro-ecological zones
Based on 50 years of climate data and an up-to-date soil database, the country has been divided into 20 agro-ecological zones (AEZs). Each AEZ is as uniform as possible in terms of physiography, climate, length of growing period and soil type for macrolevel land-use planning and effective transfer of technology.
What is agro ecological system?
From a biological perspective, agroecological systems optimize the diversity of species and genetic resources in different ways. For example, agroforestry systems organize crops, shrubs, and trees of different heights and shapes at different levels or strata, increasing vertical diversity.
What are the three agro ecological zones?
Agro-ecological zones and soils Zambia is divided into three major agro-ecological regions (Regions I , II and III), which are primarily based on rainfall amount but also incorporate soils and other climatic characteristics.
How many ecological zones are there?
ECOZONES OF THE WORLD At least nine ecological zones are recognized (Schultz 2005). They occur in bands, which may be fragmented owing to the irregular configuration of the continents and oceans, from the poles to the equator.
What is the importance of agro ecological zones?
Agro-ecological zoning (AEZ) is one of the most important approaches for agricultural developmental planning because survival and failure of particular land use or farming system in a given region heavily relies on careful assessment of agro-climatic resources.
What is the importance of agro-ecological zones?
What Agro means?
a combining form meaning “field,” “soil,” “crop production,” used in the formation of compound words: agronomy.
What is the goal of agro ecology?
Agroecological practices contribute to the different goals of sustainable agriculture: to provide sufficient food for a growing world population, not to be harmful to the environment and natural resources, to limit use of non-renewable energy, and to ensure economic viability for farmers and their communities.
How are agro-climatic zones determined?
Determining agro-climatic zones (ACZs) is traditionally made by cross-comparing meteorological elements such as air temperature, rainfall, and water deficit (DEF).
What are the 4 ecological zones?
3.4 Characteristics of global Ecological Zones
- 1 Tropical domain. Mean temperature of all months over 18oC.
- 2 Subtropical domain. At least 8 months above 10oC.
- 3 Temperate domain.
- 4 Boreal domain.
What Agro Economic Zone?
Agro-ecological zones are natural physical regions sufficiently mappable at 1:600,000. scale and are sufficiently uniform in climate, physiography and soil patterns for. description and evaluation of agricultural potential and constraints.
What are the requirements of an agro-ecological zone?
· inventory of land utilization types and their ecological requirements; · definition and mapping of agro-ecological zones based on inventories of land resources (including climate, landform and soils); · evaluation of the land suitability of each agro-ecological zone.
How are agro-ecological regions defined by FAO?
According to the United Nations’ Food and Agriculture Organisation (FAO), agro-ecological regions define “zones on the basis of combinations of soil, landform and climatic characteristics.
How are agroecological zones classified in SADC region?
Agroecological zones in the SADC region are characterized based on the length of growing period (Deng et al., 1995). The Food and Agriculture Organization (FAO) of the United Nations (2000b) classified the region into five different agroecological zones according to rainfall and the length of the growing season as follows:
Which is an example of an agro climatic zone?
Crop yield is (FAO, 1983). Agro-climatic conditions mainly refer to soil types, rainfall, temperature and water availability which influence the type of vegetations. An agro-ecological zone is the land unit carved out of agro-climatic zone superimposed on landform which acts as modifier to climate and length of growing period.