Publications

Sobhani, B; Abad, B; Motlagh, OMK (2018). IDENTIFICATION OF VEGETATION COVERAGE SEASONS IN IRAN USING ENHANCED VEGETATION INDEX (EVI). APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, 16(4), 3861-3872.

Abstract
Vegetation coverage seasons are affected by climatic elements and changes in climatic elements influence the vegetation growth period. The purpose of this research is to identify the vegetation coverage seasons of Iran, with the help of the Enhanced Vegetation Index (EVI). In this research, 16-day data of Iran's Enhanced Vegetation Index (EVI) was downloaded from MODIS Aqua website from July 14, 2002 to March 14, 2015. Then, on the basis of nearly 10 billion cells, the long-term mean of the 16-day EVI was calculated, and a time-location array was obtained at a dimension of 23*7541502. The results of cluster analysis on the Euclidean distances of this array were investigated by Ward method. This study shows that according to the local pattern of EVI in Iran, there are three different seasons, including a massive/dense season (from the April 14th to the June 1st) that the highest density is in the north and west of Iran, a transition season (from the June 17th to the October 7th) that the highest compression on the Caspian Sea coast, and less severity along the Alborz heights, and the season of thinning (from the October 23rd to the March 29th), the highest density of which is along the coast of the Caspian Sea, on the Khuzestan plain, and also in the southern half of the country.

DOI:
10.15666/aeer/1604_38613872

ISSN:
1589-1623