What is agro-ecological zone?
An Agro-ecological Zone is a land resource mapping unit, defined in terms of climate, landform and soils, and/or land cover, and having a specific range of potentials and constraints for land use. An Agro-ecological Cell (AEC) is defined by a unique combination of landform, soil and climatic characterist.
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 are the three zones in Sri Lanka?
Sri Lanka with its tear-dropped shape is dominated by the astonishingly varied features of topography, making it one of the most scenic places in the world. Three zones can be divided by its distinguished elevation: the central highland, the plains, and the coastal belt.
What is the importance of agro-ecological zones?
Agro-ecological zones (AEZs) are geographical areas exhibiting similar climatic conditions that determine their ability to support rainfed agriculture.
What are the three agro ecological zones?
The eight sites cover a range of agroecological zones: humid, subhumid, dry subhumid, semiarid, and arid tropics.
Why is agro ecological zone required?
Agroecological Zone land areas recognised on the basis of hydrology, physiography, soil types, tidal activity, cropping patterns, and seasons. In fact an agroecological zone indicates an area characterised by homogeneous agricultural and ecological characteristics.
What is the importance of agro-ecological zone?
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 agro-ecological region of Kurunegala?
Kurunegala District is also classified as low country being less than 300 m in elevation; and covers two of the 24 agro-ecological zones identified for Sri Lanka based on soil types (Table 2.1).
What is the difference between agro climatic and agro ecological zones?
Agro-climatic conditions mainly refer to soil types, rainfall, temperature and water availability which influences the type of vegetation. 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.
What are the ecological zones?
The Ecological Zones reflect broad zones of relatively homogeneous vegetation, such as tropical rainforest, tropical dry forest, boreal coniferous forest, etc. Typical azonal vegetation types, for instance mangroves, heath and swamps are not separately classified and mapped.
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.
WHO classified agro-ecological zones?
The Planning Commission of India, divided the country into 15 broad agro-climatic zones based on physiography and climate.
What is an agro-ecological zone PDF?
Agro-ecological zone is a land unit, carved out of climatic zone, correlated with landforms, climate and the length of growing period (LGP). LGP refers to the number of days available for crop growth with suitable conditions.
What is the difference between agro climatic and agro-ecological zones?
What is the importance of agro ecological zone?
Why is agro-ecological zone required?
What are the 5 ecological zones?
The five major Domains were Tropical, Subtropical, Temperate, Boreal and Polar. These were considered to divide the globe into five broad but ecologically valid units for global forest reporting, and the subzones provide more detailed categories where required within a broad zone.
What are the ecological regions of Sri Lanka?
The ecological regions of Sri Lanka, according to the World Wide Fund for Nature are discussed below. The Sri Lanka Lowland Rainforests ecoregion is classified in the Tropical and Subtropical Moist Broadleaf Forests Biome. The forests in this region rise to almost 1,000 meters above sea level.
What is the climate of Sri Lanka lowland forests?
Sri Lanka Lowland Rainforests. The Sri Lanka Lowland Rainforests ecoregion is classified in the Tropical and Subtropical Moist Broadleaf Forests Biome. The forests in this region rise to almost 1,000 meters above sea level. The area enjoys even rainfall throughout the year, and its climate is mostly warm and wet.
What is the classification of the Sri Lanka montane forests?
The Sri Lanka Montane Forests are classified in the Tropical and Subtropical Moist Broadleaf Forests biome. The region encompasses montane and submontane moist forests rising to over 1000 meters above sea level.
What is the ecoregion of Manilkara known for?
This ecoregion is classified in the Tropical and Subtropical Dry Broadleaf Forests Biome. It is characterized by evergreen forests and thorny scrubs spread in a flat land. Dominant tree communities in the area are Chloroxylon sweitenia, Vitex altissima, and Manilkara hexandra.