Desertification is one of the main ecological and environmental problems in Iran. It is remarkably urgent to monitor and assess this phenomenon and its impact on ecosystem components such as vegetation covers to prevent and combat desertification. This study aimed to evaluate the Change Vector Analysis (CVA) method’s efficiency in assessing and monitoring desertification in […]
In this research Standardized Precipitation Index (SPI) in a period of 22 years (1990 to 2011) was used for zoning of climatic and agricultural drought in South Khorasan province, Iran. Rainfall data of six synoptic stations were collected and used for evaluation of meteorological drought. Also, reports of some local offices such as natural resources, […]
