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:: Volume 36, Issue 2 (2021) ::
GeoRes 2021, 36(2): 0-0 Back to browse issues page
Detection of surface temperature changes whit satellite images and real data and its relationship with land cover of the southern part of Lake Urmia
Khadijeh Mikaeli Hajikandi1, Behrooz Sobhani *2, Saeid Vramesh3
1- Faculty of social Sciences, University of Mohaghegh Ardabili. ardabil, Iran
2- Faculty of social Sciences, University of Mohaghegh Ardabili. ardabil, Iran , sobhani@uma.ac.ir
3- Faculty of Agriculture and Natural Resource, University of Mohaghegh Ardabili, Ardabil, Iran
Abstract:   (2355 Views)
Background and Aims: Today, using of remote sensing methods for calculating land surface temperature have expanded. Because, remote sensing allow to estimate temperature for each region with high accuracy. The objectives of this study are estimating land surface temperature by using remote sensing in south of Urmia Lake, comparing that with observed data and investigating relationship between estimated land surface temperature and vegetation cover.
Methodology: Since, changes of temperature and its relationship with changes of vegetation and land use were investigated from 2000 to 2017 in agricultural regions. For this, thermal bands of Landsat 7 and OLI was used for measuring land surface temperature, convert DN to radians and brightness temperature. Also, NDVI was used for calculating emissivity and determine land use based on object-oriented method. Then relationship between vegetation and land surface temperature was investigated with regression analysis.
Findings: The results showed that the observed and estimated land surface temperature increased from 2000 to 2017 due to changes in land use and vegetation cover. Based on linear regression, there is an acceptable relationship between estimated and observed land surface temperature (R2 = 0.72). Also, there a significant negative relationship between lands surface temperature and vegetation cover.
Conclusion:  The results showed that remote sensing methods provide accurate results in estimating the surface temperature. Knowing the surface temperature and its relationship to land use helps planners and experts to make management decisions for protect natural resources and agricultural lands.
Keywords: Vegetation cover, Land Surface temperature, Object Oriented, NDVI, Lake Urmia
     
Article Type: Original Research | Subject: Climatology
Received: 2020/11/9 | Accepted: 2021/01/25 | Published: 2021/03/26
* Corresponding Author Address: Faculty of social Sciences, University of Mohaghegh Ardabili. ardabil, Iran
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Mikaeli Hajikandi K, Sobhani B, Vramesh S. Detection of surface temperature changes whit satellite images and real data and its relationship with land cover of the southern part of Lake Urmia. GeoRes. 2021; 36 (2)
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Volume 36, Issue 2 (2021) Back to browse issues page
فصلنامه تحقیقات جغرافیایی Geographical Researches Quarterly Journal
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