Rangelands occupy over approximately 45% of the Afghanistan land area. Millions pf people derive their livelihoods directly form rangelands resources. Properly managed rangelands can enhance food security and poverty alleviation. The focus of this service is to produce rangeland quality indicators based on multi-sources remote sensing data, GIS and ICT tools. The data service will support relevant professionals in sustainable rangeland management related decision in Afghanistan.
Email: servirhkh@icimod.org
Rangelands Monitoring Variable Definitions:
Parameters
Indicators
Description
Ecological Meaning
Formula
Phenology
Start of growing season time (SGST)
Time when NDVI reaches a defined threshold value in spring
Approximates the start of the season when green forage becomes available; time of highest quality forage
∑ k=nk=1SOSTk
End of growing season time (EGST)
Time when NDVI decreases to a defined threshold value in autumn
Approximates the end of the season when seasonally active vegetation becomes senescent or has been covered in snow; green forage becomes scarce
∑ k=nk=1EOSTk
Length of growing season (LGS)
Number of days between start and end of growing season
Number of days when forage is available
∑ k=nk=1LOSk
Productivity / biomass
Seasonal amplitude
Maximum NDVI value of the season
difference between the maximum value and the base level
Max (NDVI)
Seasonally Integrated NDVI (SIN)
Cumulative positive NDVI values of the season
Proxy for seasonal primary production of vegetation
