Volume 24, Issue 75 (2-2025)                   jgs 2025, 24(75): 480-492 | Back to browse issues page

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1- PhD student in climatology, Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
2- Associate Professor, Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran. , aagandomkar@gmail.com
3- Assistant Professor, Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
Abstract:   (1558 Views)
The main goal of this research is to analyze the time series trend of fire events in natural areas and reveal the relationship between these fire events and vegetation levels in Lorestan province. In this regard, the data of the fire product of the Madis sensor (MOD14A1) and the vegetation product (MOD13A3) of the Madis sensor were used during the statistical period of 2000-2020. The monthly and annual spatial distribution of fires in Lorestan province was investigated. Cross-information matrix analysis and spatial correlation matrix were used to reveal the relationship between fire occurrences and vegetation. The results showed that more than 70% of the total frequency of fire occurrences in natural resources fields (fires with code 2) in Lorestan province is related to June and then July. In terms of the long-term trend, the 21-year trend of the frequency of fire incidents in the province showed that the frequency of incidents in the natural resources areas of the province has generally increased with an annual slope of 3 incidents. The results of the correlation analysis between the monthly vegetation cover and the annual frequency of fire occurrences showed that the fire occurrences in the province showed a significant correlation with the vegetation cover changes in 4 months of the growing period, i.e. from May to August. Cross-matrix analysis between the spatial distribution of fire occurrence foci and NDVI index, both of which were products of MODIS measurement, indicated that, in general, the highest frequency of fire occurrences in Lorestan province in the period from May to August corresponds to Greenness range was 0.15 to 0.22. This range of vegetation generally corresponded to rainfed lands, weak pastures and low-density forest patches
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Type of Study: Research | Subject: climatology
Received: 2022/10/2 | Accepted: 2022/12/18

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