22.ارزیابی تأثیر توسعه شهری و روستایی و تغییرات کاربری زمین بر دمای سطح (LST) شهر و روستا با استفاده از تصاویر لندست بازه سال 2003 تا 2023 منطقه موردی شهرستان اصلاندوز

نوع مقاله : مقاله مستخرج از طرح پژوهشی

نویسندگان

1 استادیار گروه جغرافیا و برنامه ریزی شهری، دانشگاه محقق اردبیلی، اردبیل ایران

2 دانشجوی دکتری جغرافیا و برنامه ریزی شهری، دانشگاه محقق اردبیلی، اردبیل، ایران

چکیده
زمینه و هدف: حرارت سطح زمین یکی از شاخص‌های کلیدی در ارزیابی تعادل انرژی زمین در مقیاس منطقه‌ای و جهانی به شمار می‌رود. با توجه به محدودیت داده‌های ایستگاه‌های هواشناسی، استفاده از داده‌های سنجش از دور به عنوان روشی کاآمد برایبرآورد سطح زمین اهمیت فراوانی دارد.  هدف اصلی از این تحقیق پایش دمای سطح زمین و تغییرات کاربری و توسعه شهری با استفاده از تصاویر ماهواره‌ای لندست سال 2003  و 2023  با استفاده از نرم­افزار ENVI پردازش‌های لازم انجام شد.نقشه کاربری اراضی 20ساله نشان داد که توسعه شهری بسیار مشهود در کل شهرستان اصلاندوز مشاهده شد. اگر این توسعه از آسیب به  محیط زیست و جنگل جلوگیری کند مثبت خواهد بود.
روش شناسی: در این مطالعه، از تصاویر ماهواره لندست مربوط به سال های ۲۰۰۳ و ۲۰۲۳ برای بررسی و امکان سنجی استفاده از انرژی تابشی خورشید استفاده شد. برای انجام محاسبات با استفاده از نرم افزار ArcGIS جهت تهیه نقشه ها، از نرم افزار ENVI استفاده شد. یکی از کاربردهای تصاویر حرارتی، تهیه نقشه های حرارتی برای تعیین مناطق هم دما است.
نتایج و یافته‌ها: نتایج نقشه حرارت سطح زمین نشان داد که دمای سطح زمین در  شهرستان اصلاندوز به طور چشمگیری افزایش داشته است به طوری که در سال 2003 دمای سطح زمین 49/42 این رقم در سال 2023 به 92/49 افزایش یافته است. نتایج  ادغام نقشه کاربری اراضی و دمای سطح زمین نشان داد که کمترین دما را در هر دو سال کاربری آب و جنگل به خود اختصاص می‌دهد که علت آن رطوبت بالا می‌باشد و کاربری خاک و منطقه مسکونی دارای بالاترین دما می‌باشد.  میانگین دمای کاربری خاک از 42.09 درجه سلسیوس در سال 2003 به 49.86 درجه سلسیوس در سال 2023 و میانگین دمای کاربری مسکونی از 42.57 درجه سلسیوس در سال 2003 به بیش از 49.57 درجه سلسیوس در سال 2023 افزایش یافته است. این افزایش قابل توجه دما عمدتاً ناشی از کاهش پوشش گیاهی و کاهش تبخیر و تعرق در این مناطق است که منجر به افزایش دمای سطحی شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله English

Assessing the impact of urban and rural development and land use changes on urban and rural surface temperatures (LST) using Landsat images from 2003 to 2023, case study area of Aslandoz Township

نویسندگان English

Lotfollah Maleki Masoomabad 1
Maryam Mohammadzadeh Shishehgaean 2
1 Assistant Professor, Department of Geography and Urban Planning, University of Mohaghegh Ardabili, Ardabil, Iran
2 PhD student in Geography and Urban Planning, University of Mohaghegh Ardabili, Ardabil, Iran
چکیده English

Background and Objective: Land surface temperature is a fundamental indicator in monitoring energy balance models at the land surface at regional and global scales. Given the limitations of meteorological stations, remote sensing can be a suitable alternative for estimating land surface temperature. The main objective of this research is to monitor land surface temperature and land use changes and urban development using satellite images from 2003 and 2023. The results of the 20-year land use map showed that very visible urban development was observed throughout the entire Aslandoz Township. If this development is done with minimizing damage to the environment and forests, it will be very positive.
Methodology: In this study, Landsat satellite images from 2003 and 2023 were used to investigate and assess the feasibility of using solar radiation energy. ENVI software was used to perform calculations using ArcGIS software to prepare maps. One of the applications of thermal images is to prepare thermal maps to determine isothermal zones.
Results and Findings: The results of the LST map showed that the land surface temperature in Aslandoz Township has increased significantly, so that in 2003 the land surface temperature was 42.49, and in 2023 this figure has increased to 49.92. The results of the integration of land use maps and land surface temperature showed that the lowest temperature in both years was attributed to water and forest use, which is due to high humidity, and the highest temperature was attributed to soil and residential use. Soil use in 2003 was 42.09 and in 2023 was 49.86, and residential use in 2003 was 42.57, and in 2023 the highest value for residential use was 42.57, which is a significant figure. The reason for this very high temperature and the difference in use is that if an area is devoid of vegetation or has sparse coverage, evaporation and transpiration are low and the temperature increases.

کلیدواژه‌ها English

Object-oriented classification
landsurface temperature
landuse
Landsatimages
Aslandoz
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  • تاریخ دریافت 21 تیر 1404
  • تاریخ بازنگری 06 شهریور 1404
  • تاریخ پذیرش 06 آبان 1404
  • تاریخ اولین انتشار 07 آبان 1404
  • تاریخ انتشار 01 خرداد 1405