Biomass response to precipitation variability 1982-2000

 

Biomass response to precipitation variability 1982-2000

This map shows the coefficient of variation of the maximum NDVI for the period 1982-2000, which is an indicator of the fluctuations in agricultural or natural biomass, which do not result from land use change and are related to current climatic variability.
The colors in orange and red express where the variability is the highest. As the CV of the maximum NDVI expresses the response of the vegetation biomass to climatic fluctuations, it is an impact indicator and hence evidence of the presence of ‘hot’ or ‘cool’ spots in different parts of CWANA.
The map shows several current hot spots:

  • North Africa, from Morocco into Tunisia
  • The Sahel, from Mauritania  into Sudan, Eritrea, northern Ethiopia and turning south into Somalia
  • The Fertile Crescent, from northern Syria, Kurdistan, turning southeast into Kuzistan and southern Iran
  • The foothill zone north of the Tien-Shan and Pamir Central Asia mountain ranges
  • The rangelands in the north of Central Asia

 All these areas are characterized by severe droughts, degradation of land, water and vegetation resources, and sometimes famines.

This map shows the coefficient of variation of the maximum NDVI for the period 1982-2000, which is an indicator of the fluctuations in agricultural or natural biomass, which do not result from land use change and are related to current climatic variability.
The colors in orange and red express where the variability is the highest. As the CV of the maximum NDVI expresses the response of the vegetation biomass to climatic fluctuations, it is an impact indicator and hence evidence of the presence of ‘hot’ or ‘cool’ spots in different parts of CWANA.
The map shows several current hot spots:

  • North Africa, from Morocco into Tunisia
  • The Sahel, from Mauritania  into Sudan, Eritrea, northern Ethiopia and turning south into Somalia
  • The Fertile Crescent, from northern Syria, Kurdistan, turning southeast into Kuzistan and southern Iran
  • The foothill zone north of the Tien-Shan and Pamir Central Asia mountain ranges
  • The rangelands in the north of Central Asia

 All these areas are characterized by severe droughts, degradation of land, water and vegetation resources, and sometimes famines.

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