MELDATA (International Center for Agricultural Research in the Dry Areas)
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270 research outputs found
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Balkh Watershed Aspect
No full textBalkh aspect was generated from digital terrain models (DTM) with 5 m resolution derived from DigitalGlobe imagery assets. The layer covers Balkh watershed. This layer is intended to be used in Afghanistan Electronic Atlas, as one of the surface characterization layers in Afghanistan, part of Integrated Catchment Management and Capacity Building for Improving Livelihoods in Afghanistan, Geoinformatics Application in an Integrated Watershed Management project. Please visit our website for more data. Information and download links are available in metadata
Impact of rest duration and land tenure on species richness, frequency and plant cover of degraded rangelands in Tunisia
No full textTo investigated changes in the spatial and temporal patterns of community structure and rangeland function in response to the period of rest. A total of 20 sites in southern Tunisia (Tataouine) covering more than 15000 ha including 12 private rangelands and 4 communal subjected to grazing management, in addition to 4 freely grazed site which considered as control were retained for detailed monitoring-assessment study. This data could be one of the tools to examine the impact and potential of traditional best practices for rangeland restoration on regeneration and the persistence of plant species by monitoring the evolution of specific characters (global plant cover, specific frequencies, flora richness and the plant density, biomass, rangeland production and carrying capacity). The state of the soil surface (wind veil, crust, stones, litter) is also studied to monitor and assess changes of soil structure. This Data will not be open access for the time being as it will be used for potential publication which will recommend the best practice for rangeland rehabilitation under climate change in the dry areas. Afterward it will be open access to allow the researcher to have database about the rangelands condition in certain time under certain managements.
Vegetation was monitored during spring, in April 2019, in the peak season of primary production and when development of the annual vegetation was at its prime. Vegetation cover and species composition were estimated using the point-quadrats method along three 50-m long transects in each site and with 100 points per transect.
A fine pin was descended to the ground every 50 cm along the line. Each of the 100 hits per line was recorded according to the plant species and type of ground touched (Stones, Sand, Crust, Litter). The total vegetation cover is calculated as: VC = (n/N) × 100 with n: the number of hits of all plant species and N: the total number of hits (100 hits in our case). Species frequency is the number of times a plant species is present in a the transect
DIIVA-PR trials in Morocco, 2019-2020 season
No full textThe map shows the geographical distibution of DIIVA-PR trials conducted in Morocco during the season 2019-2020. This work was carried under the project DIIVA-PR: “Dissemination of Interspecific ICARDA Varieties and Elites through Participatory Research” aimed to evaluate the advantage of using
crop wild relatives of durum wheat, barley and lentil in multi-environment conditions
The Response of Grazed Vegetation in Relation to the Type of Landscape in the Mountain Rangelands, Tajikistan
No full textThe dataset reports on information collected to investigate the response of grazed vegetation in relation to landscape type in the mountain rangelands of Tajikistan over two seasons in 2016 (autumn and spring). Slopes facing the north and south, and grazed during different seasons were randomly selected and separated according to winter and summer pastures for each slope; summer pastures were grazed during the summer period, whereas the winter pastures were grazed during the winter period. The climate is moderately warm, with short warm winter and hot dry long summers, and the average annual rainfall ranges between 230-350 mm, whereas average yearly temperature ranges between 15.6-20 degrees Celsius. The dominant native species in the study site are the drought-tolerant white saxaul (Haloxylon persicum Bunge ex Boiss. & Buhse) while the Ferulafoetida (Bunge) Regel is widely expanded in areas with high load of livestock grazing. On each selected slope, five 100 m parallel transect lines, spaced 10 m apart were used to sample the vegetation. At every 10 m within each transect, 1 square meter quadrat was laid for monitoring biomass for annual plants, plant cover and density as well as species count. Inside the sub-quadrats, the standing crop was clipped at ground level and weighed before oven-drying at 85 degrees Celsius for 24 h, to estimate average standing crop calculated in kg/ha. To determine plant species cover, species were recorded along each transect using the line intercept method as described by whereas plant density was estimated by counting the number of individuals and dividing by the quadrat's area. Plant density, measured as plant/m2 and plant species coverage (%) were calculated
West Asia And Egypt Annual Mean Precipitation 2010-2040
No full textWest Asia and Egypt. Annual mean precipitation 2010-2040 (based on the averaged output of 7 GCM models under Greenhouse Gas Emission Scenario A1b). The data is baseline data to assist development agencies in planning for adaptation strategies to climate change. Map prepared for the Regional Center for Disaster Risk Reduction (RCDRR) through support by AASTMT, UNISDR and WFP. Please visit our website for more data. Information and download links are available in metadata
Estimation of shrub canopy cover by digital vegetation charting technique (DVCT), Syria
No full textThe shrub fodder component should be measured to avoid underestimation of the carrying capacity of rangelands. In this study, we present a fast, reliable and non-destructive method to estimate canopy vegetation cover to obtain aboveground shrub biomass. The experiment was conducted under field conditions in northwest Syria, where seedlings of seven shrub species were monitored for one year: Atriplex leucoclada (Moq.) Boiss., A. halimus L., A. lentiformis (Torr.) S. Watson, A. canescens (Pursh) Nutt., A. nummularia Lindl., Salsola vermiculata L. and Haloxylon aphyllum (C.A. Meyer) Bunge. The experimental layout was a randomized complete block design with five replications. We explored the effectiveness of digital vegetation charting technique (DVCT) for estimating shrub canopy cover. Aboveground shrub biomass was clipped to estimate the dry matter (DM) weight per species and to determine its relationship to canopy cover. In this study, an estimate of greenness (percent green vegetation cover) was extracted by way of greenness algorithms. Simple linear regressions between vegetation cover and biomass for 210 plots were performed
West Asia And Egypt. Relative Precipitation Change 2010-2040/Current Climate: Year
No full textWest Asia and Egypt. Relative precipitation change 2010-2040/current climate: Year (based on the averaged output of 7 GCM models under Greenhouse Gas Emission Scenario A1b), it is baseline data to assist development agencies in planning for adaptation strategies to climate change. Map prepared for the Regional Center for Disaster Risk Reduction (RCDRR) through support by AASTMT, UNISDR and WFP. Please visit our website for more data. Information and download links are available in metadata
Climate Productivity Index (Crop Group IV, Rainfed)
No full textData for characterization of Central Asia climatic conditions. Climate Productivity Index (Crop Group IV, Rainfed) was calculated by using interpolated raster from climatic stations using CLIMAP tool developed at ICARDA
Annual Rainfall Likely To Be Exceeded In 2 Years Out Of 3
No full textAnnual rainfall likely to be exceeded in 2 years out of 3, in millimeters, at 30 arcsecond resolution, was prepared for the IFAD-ICARDA Project "Poverty Assessment in Sudan". Map prepared as part of three reports that detail the results of a poverty assessment and mapping project in North and Southern Sudan. The map helps to characterize the potential and risks related to the natural resource base for agriculture in the different States of Sudan. For more information refer to linked report
Abergelle goat similarity in all evaluated factors in Ethiopia
No full textThis map was prepared for Livestock and fish CRP project for Mapping breeds to appropriate production environments: a case study of Ethiopian indigenous sheep and goats. Abergelle goat similarity in all evaluated factors in Ethiopia at 30 arc-second (about 1 km) resolution. the map was calculated as the lowest of all similarity index (temperature, precipitation, landforms and soils)