These zones are also experiencing decreasing trends in. Principles of agronomy deal with scientific facts in relations to environment in which crop are produced. How will climate change shift agroecological zones and. Nigeria is a tropical nation with rainforests in the south, central savanna regions, and arid expanses in the north. Lgp refers to the number of days available for crop. German agency for technical cooperation gtz march, 1998 addis ababa. Zimbabwe agroecological zones map harare mashonaland east mashonaland west bulawayo midlands masvingo mashonaland central manicaland matabeleland south matabeleland north v iia i. Jul 23, 2017 similarly, rajasthan has been divided into 10 agro climatic zones. Extract of an agro climatic constraints inventory 16.
Agroclimatic zones of india and tamil nadu agro ecological zones of india. The united republic of tanzania is one of the countries that are continuing to suffer from the impacts of climate change and related hazards such as floods and droughts, which have substantially affected economic performance and undermined poverty reduction efforts. The fao 1999, defines agroecological zone as a land resource mapping unit, defined in terms of climate. However the recent deficits in rainfall amounts are moving the farming from zone 1 to zone 2 and 3. Agro ecological zones are also used to determine crop water requirements and longterm frost protection measures espie et al. This region is planted to millet, cassava, sorghum, beans, coffee, sugar cane, rice, pineapples and bananas, amongst others. An agro ecological zone is a land resource mapping unit, defined in terms of climate, landform and soils, andor land cover, and having a specific range of potentials and constraints for land use fao 1996. Bringing ecological principles to bear can suggest new management approaches in agroecosystems. Sri lanka has a heterogeneous agroecological environment and many workers have made efforts to classify this situation. It is found that there are 29 different types of agro ecological zones of the possible 36 combinations. Using frequently travelled routes, the feasibility of the mapped agroecological belts as major agroecological zones maz can easily be demonstrated. This ecological region of zambia is a dense forest that cuts across central africa, and is one of the largest ecological zones in africa. The field of agroecology is not associated with any one particular method of farming, whether it.
Planning commission has delineated 15 agro climatic zones in india which were p. The rest of the agro ecological subregions of the dry zone also support only the maha crop since yala rains in those subregions are not adequate to meet the evapotranspiration requirements. Agroecological zones are defined, which have similar combinations of climate and soil characteristics, and similar physical potentials for agricultural production. The influx of genes was lower in the eastern agro ecological zone than the north west. Field verification of the map along major transects such as roads will enable the user to make an independent judgement about the precision of the maps.
Agro ecological regions clearing house mechanism sri lanka. To view this page ensure that adobe flash player version. An important objective of most of these efforts was to evolve agro ecological regional maps for the country in order to. The designations employed and the presentation of material in this information product do not. Agro ecological zones of pakistan parc 1980 and muhammad 1986 have delineated the country into ten agro ecological zones regions. Agroecological zones, diversity on farm systems level and.
Agroecological zones in africa funded by the kcp trust fund and conducted in. Several methodologies have been used for regionalisation depending on the purpose and ends. Agro ecological classification also known as natural region nr classification of zimbabwe, divided the country into five regions based on mean annual rainfall and was done in the 1960s vincent and thomas, 1960. Bioclimate computation based on subdivision level rainfall data. Sri lanka has a heterogeneous agro ecological environment and many workers have made efforts to classify this situation. The rest of the agroecological subregions of the dry zone also support only the maha crop since yala rains in those subregions are not adequate to meet the evapotranspiration requirements. Agro ecological zone nigeria is found in the tropics, where the climate is seasonally damp and very humid. The region is characterized by plateaus and poor soil. Thirty agroecological regions and 88 subregions and 535 units have been. The study uses agroecological zones aezs as the cornerstone of the analysis. An agro ecological zone is a land resource mapping unit, defined in terms of climate, landform and soils, andor land cover, and having a specific range of potentials and constraints for land use. So you must choose carefully either the crops to cultivate in your agroecological zone or the agroecological zone for the crops you want to produce. Sudan savannah, guinea savannah, coastal savannah, forestsavannah transitional zone, deciduous forest zone and the rain forest zone.
This homogeneity is more prominent in the sub region and unit levels. The area covers the northern part of zambia and stretches through to angola, the democratic republic of the congo, tanzania, burundi, and malawi. In these agro ecological zones, major external inputs fertilizers, pesticides and others are used in crop. Agroecological zones, agriculture, cultivation potentials, environmental constraints, land resources. For example, the national working group in agriculture decided to adopt the use of agro ecological regions as a framework for discussing the major agricultural systems and resource management issues. The tree cover percent analysis in various agroecological zones of india showed high mean tree cover in those zones where the rainfall is significantly high and soil fertility is adequate such as. Agro ecological zone is a land unit, carved out of climatic zone, correlated with landforms, climate and the length of growing period lgp.
Agroecological zone land areas recognised on the basis of hydrology, physiography, soil types, tidal activity, cropping patterns, and seasons. The agro ecological zones are named depending on their rainfall, soils, and the general crops that are found in the region. Pdf crops and agroecological zones of ethiopia abebaw. Sep 24, 20 agro ecological zone nigeria is found in the tropics, where the climate is seasonally damp and very humid. On the other hand, 33 elaborated agro ecological zones are recognized by many institutions at present where many kinds of crops are also grown in each zone. All the agro ecological zones in have specific characteristics that define them.
Agro ecological zoning with respect to farming system in nigeria. Use of agroclimatic zones to upscale simulated crop yield potential. Apr 25, 2017 this ecological region of zambia is a dense forest that cuts across central africa, and is one of the largest ecological zones in africa. In fact an agroecological zone indicates an area characterised by homogeneous agricultural and ecological characteristics. Agro ecological zone 1 was most suitable for production of traditional crops like maize and beans. Agroecological zones aezs agroecological zones an agroecological zone aez is a zone or region which has unique combination of physiographic, soil, hydrological and agroclimatic characteristics. The major agro ecological zones of pakistan alongwith their locality features, rainfall pattern and geography is given as under. Rainfall 600 to 800 mm, growing season is relatively short 80120 days. Pdf agroecological zone is a land unit, carved out of climatic zone, correlated with landforms, climate and the length of growing period lgp. Land suitability ratings of crops in thermal zones 14. Semiarid includes southern, eastern and western areas. To view this page ensure that adobe flash player version 10. Similarly, rajasthan has been divided into 10 agro climatic zones.
The performance of the crops depend on the agroecological zone, and that, not all crops can perform better in all agroecological zones. Aug 01, 2019 environment ecological regions of nigeria. Potential net biomass and marketable yield based on radiation and temperature for different lgp zones 15. Agro ecological zones and soils three major agro ecological regions which are primarily based on rainfall characteristics but also incorporate soils and other climatic characteristics regions i. Soil organic matter som fractions for 186 lucas 2009 soil samples grassland, forest. Regionalisation has been used for planning at various levels. Total annual rainfall ranges from 780 mm in the dry eastern coastal belt to 2,200 mm in the wet southwest corner of the country. The natural vegetative zones that exist in the country are governed by the combined effects of temperature, humidity, rainfall and particularly, the variations that occur in. Six groupings of zones have been made for appropriate transfer of agrotechnology. Agro ecological zones at state level for resource planning at state level soil family association 1.
The total number of activities in each household divided by the activities in the particular universe measures the diversity of the activities within the special farm household. Every crop is specific of the agro ecological zone. Agro ecological unit at district level for resource planning at district level soil series association 1. What is the difference between agroclimatic zones and. Nachtergaele, sylvia prieler, edmar teixeira, geza toth, harrij van velthuizen, luc verelst, david wiberg.
Agro climatic zone it refers to a land unit in terms of its major climate and growing period which is climatically suitable for a certain range of crops and cultivars. On the other hand, 33 elaborated agro ecological zones are recognized by. The development of a regional classification scheme for rwanda. Mainly on the basis of physiographic climate, soil type and agricultural land use. Once these zones are recognized and characterized on a scientific basis, it would be possible to categorize the country into a fairly homogeneous resource types namely agro ecological zones aezs and at the same time to describe the associated environmental problems and suggest solutions of each on a zonal basis. Iii agroecological zones assessments gunther fischer, mahendra shah,harrij van velthuizen, freddy nachtergaele encyclopedia of life support systems eolss the aez methodology follows an environmental approach. Ecological zones aez process is the main system for assessing agricultural. The essential elements in defining an agro ecological zone are the growing period, temperature regime and soil mapping unit.
To characterise target farming landscapes and systems, and develop tools for matching species and management options to sites and circumstances. Global agro ecological zones i i a s a international institute for applied systems analysis gaez ver 3. According to the ministry of agriculture 1998, ethiopia has 18 main agro ecological zones. The resulting units are the agro ecological zones, which have a unique combination, or a specified range, of soil mapping units, growing period regimes, and thermal regimes. Agro ecological regions of australia page 4 the report of the sca provided considerable base data for this national working group.
The entire country has been delineated into 126 agro climatic zones by the indian council of agricultural research icar. The natural vegetative zones that exist in the country are governed by the combined effects of temperature, humidity, rainfall and particularly, the variations that occur in the rainfall. Of the 18 zones, 11 zones representing more than 74% of the country were selected. The traditional zones include bereha, kolla, woina dega, dega,wurch and kur where many kinds of crops are grown in each of these ecological zones. Unesco eolss sample chapters land use, land cover and soil sciences vol. Iii agroecological zones assessments gunther fischer, mahendra shah,harrij van velthuizen, freddy nachtergaele encyclopedia of life support systems eolss it should be noted that the aez results have been aggregated to the national, regional. The agro climatic zones of rajasthan are as follows.
The resultant agro ecological zones are identified and demarcated. The results of the global aez assessment are estimated by grid cell and aggregated to. Thirty agroecological regions and 88 subregions and 535 units have been identified by adding successive layers of information on the physical. This zone extends from little south of hyderabad to arabian sea.
Total annual rainfall ranges from 780 mm in the dry eastern coastal belt to 2,200 mm in. An agro ecological cell aec is defined by a unique combination of landform, soil and climatic characterist. Agroecological regions of australia page 5 2 australian agro ecological regions 2. The north of the country receives higher rainfall and has typically acidic soils. German agency for technical cooperation gtz m arch, 1998 addis ababa.
696 278 62 1525 888 1422 531 653 865 710 489 1299 1201 1213 277 1283 1491 689 255 545 328 1264 538 717 1373 1144 72 171 98 471 1116 1303 531 1203 595 330 616 1229 665 969 720 700 696 708 729 182 1289 958 376