Journal of Spatial Analysis Environmental Hazards
تحلیل فضایی مخاطرات محیطی
Journal of Spatial Analysis Environmental Hazards
Literature & Humanities
http://jsaeh.khu.ac.ir
1
admin
2423-7892
2588-5146
10.61186/jsaeh
fa
jalali
1401
6
1
gregorian
2022
9
1
9
2
online
1
fulltext
fa
آشکارسازی واداشتهای بازتاب سطحی پوشش اراضی استان لرستان با استفاده از محصولات سنجنده MODIS
Detection of surface reflection inductions in Lorestan province using MODIS sensor products
تخصصي
Special
پژوهشي
Research
<strong>مداخلات انسان در عرصههای طبیعی بهصورت تغییر در کاربری اراضی منجر به ایجاد دومینویی از ناهنجاریها و سپس مخاطرات محیطی شده است. این تغییرات گسترده و انباشتی در پوشش و کاربری اراضی، خود را به شکل ناهنجاریهایی از قبیل شکلگیری روانابهای شدید، فرسایش خاک، گسترش بیابانزایی و شور شدن خاک نشان داده است. هدف اساسی این تحقیق آشکارسازی واداشتهای رادیانسی سطحی (آلبیدو) فصلی ساختار پوشش اراضی استان لرستان است. در این راستا از دادههای طبقات پوشش اراضی محصول کامپوزیت </strong><strong><span dir="LTR">MCD12Q2</span></strong><strong> سنجنده </strong> <strong><span dir="LTR">MODIS</span></strong><strong>استفاده شد. دادههای رادیانسی شامل داده باز تحلیل آلبیدو سطحی بود که از پایگاه کوپرنیکس نسخه </strong><strong><span dir="LTR">ERA5</span></strong><strong>، اخذ شد، بهمنظور آشکارسازی واداشتهای رادیانسی هرکدام از پوششهای اراضی استان</strong> <strong>به تفکیک فصلی از تکنیک ماتریس تحلیل متقاطع </strong><strong><span dir="LTR">(CTM)</span></strong><strong> استفاده شد. نتایج نشان داد بهطورکلی در سطح استان لرستان 5 کد پوشش اراضی شامل: اراضی جنگلی، مراتع، اراضی کشاورزی، اراضی مسکونی و اراضی بایر قابل آشکارسازی هستند. همچنین نتایج این تحقیق بیانگر آن بود که که پوشش اراضی در فصل­های پاییز، بهار و تابستان، واداشت و تأثیر معنیداری در میزان آلبیدوی سطحی در سطح استان اعمال نکردهاند، میزان آلبیدوی دو فصل بهار و پاییز در حالت کمینه قرار داشت که به میانگین آلبیدوی جهانی تقریبا 2/0 بسیار نزدیک است. اما در فصل زمستان اولاً میزان آلبیدوی سطحی در همه پوششهای اراضی استان (بهجز طبقه اراضی جنگلی) بهصورت قابلتوجهی نسبت به سایر فصول افزایش پیدا کرده اند</strong> <strong> و دوما تفاوت قابل توجهی نیز بین پوشش های مختلف اراضی از لحاظ واد اشت آلبدو، آشکار شد. در این خصوص بیشترین میزان تغییر در آلبیدو مربوط به دو پوشش مراتع و اراضی بایر بود که در فصل زمستان میزان آلبیدوی این دو پوشش به ترتیب مقدار عددی 36/0 تا 38/0 رسیده است در حالی که اراضی جنگلی استان در فصل زمستان کمترین میزان آلبیدوی سطحی را از خود نشان داده است. </strong>
<span style="font-size:11pt"><span style="line-height:normal"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span lang="EN" style="font-size:14.0pt"><span new="" roman="" style="font-family:" times="">Revealing surface reflection forcings of land cover in Lorestan province using MODIS sensor products</span></span></b><b><span style="font-size:14.0pt"><span style="font-family:"Times New Roman",serif"></span></span></b></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span style="font-family:"Times New Roman",serif"></span></b></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span dir="LTR" style="font-family:Roboto">Introduction</span></b></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><span new="" roman="" style="font-family:" times="">Human interventions in natural areas as a change in land use have led to a domino effect of anomalies and then environmental hazards. These extensive and cumulative changes in land cover and land use have manifested themselves in the form of anomalies such as the formation of severe runoff, soil erosion, the spread of desertification, and salinization of the soil. The main purpose of this study is to reveal the temperature inductions of the land cover structure of Lorestan province and to analyze the effect of land use changes on the temperature structure of the province. In this regard, the data of land cover classes of MCD12Q2 composite product and ground temperature of MOD11A2 product of MODIS sensor were used. Also, in order to detect the temperature inductions of each land cover during the hot and cold seasons, cross-analysis matrix (CTM) technique was used. The results showed that in general in Lorestan province 5 cover classes including: forest lands, pastures, agricultural lands, constructed lands and barren lands could be detected. The results of cross-matrix analysis showed that in hot and cold seasons, forest cover (IGBP code 5) with a temperature of 48 ° C and urban and residential land cover (IGBP code 13) with a temperature of 16 ° C as the hottest land use, respectively. They count. In addition, it was observed that the thermal inductions of land cover in the warm season are minimized and there is no significant difference between the temperature structure of land cover classes; But in the cold season, the thermal impulses of land cover are more pronounced. The results of analysis of variance test showed that in the cold period of the year, unlike the warm period of the year, different land cover classes; Significantly (Sig = 0.026) has created different thermal impressions in the province. Scheffe's post hoc analysis indicated that this was the difference between rangeland cover classes and billet up cover. </span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"> <span dir="RTL" style="font-family:"Arial",sans-serif" lang="FA"></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span style="font-family:Roboto">materials and Method </span></b><b><span dir="RTL" style="font-family:"Arial",sans-serif" lang="FA"></span></b></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b> </b><span dir="LTR" new="" roman="" style="font-family:" times="">In this study, to reveal the relationship between land cover levels and different land use classes, cross-information matrix analysis was used in the ARC-GIS software platform. Since one of the main objectives of the study was to investigate and reveal the albedo inductions of land cover classes in Lorestan province, so the relationship between these two factors was investigated by cross-matrix analysis technique. In this regard, two sets of data were used. The first set of data was related to land cover classes of MODIS sensor composite product with a spatial resolution of </span><span new="" roman="" style="font-family:" times="">1 </span><span dir="LTR" new="" roman="" style="font-family:" times="">km and hierarchical data format (MCD </span></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"> <span new="" roman="" style="font-family:" times="">12(</span><span dir="LTR" new="" roman="" style="font-family:" times="">Q</span><span new="" roman="" style="font-family:" times="">2 </span><span dir="LTR" new="" roman="" style="font-family:" times="">(MCD product) which was obtained from the database of this sensor </span></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span style="font-family:"Times New Roman",serif" lang="FA"></span></b></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b>Conclusion</b></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span style="tab-stops:right 444.2pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><span dir="LTR" new="" roman="" style="font-family:" times=""> Land cover classes or perhaps it can be said that land use is one of the most important shapers and determinants of climate near the earth. In this study, it was observed that in general, 5 major land cover classes in the province are separable, among which rangeland and forest lands account for 85% of the total land cover of the province. On the other hand, it was seen in this study that the average spatial albedo of the province in spring, autumn and winter is about 0.2, which is very close to the global value of this component, but in winter the average value of this index in the province reaches 0.3, which can be increased Shows attention. The five land cover classes in the province had their own unique albido induction in winter, which was separable and distinct from each other, but in spring, summer and autumn, no significant distinction of albido induction of these land cover was revealed.</span> <span style="font-family:"Times New Roman",serif" lang="FA"></span></span></span></span></span></span></span><br>
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<span style="font-size:11pt"><span style="line-height:115%"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span new="" roman="" style="font-family:" times="">Keywords: </span></b><span new="" roman="" style="font-family:" times="">Land cover changes, Land surface temperature, Cross-information analysis matrix, Lorestan province</span></span></span></span></span><br>
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استان لرستان, آلبیدوی سطحی, پوشش اراضی, کاربری اراضی, سنجنده مادیس.
Land cover changes, Land surface temperature, Cross-information analysis matrix, Lorestan province
127
140
http://jsaeh.khu.ac.ir/browse.php?a_code=A-10-634-2&slc_lang=fa&sid=1
hamed
heidari
حامد
حیدری
heidari.ha@fh.lu.ac.ir
100319475328460010729
100319475328460010729
No
لرستان خرم آباد دانشگاه لرستان
darush
yarahmadi
داریوش
یاراحمدی
yarahmadi.d@lu.ac.ir
100319475328460010730
100319475328460010730
Yes
لرستان خرم آباد دانشگاه لرستان
hamid
mirhashemi
حمید
میرهاشمی
mirhashemi.h@lu.ac.ir
100319475328460010731
100319475328460010731
No
لرستان خرم آباد دانشگاه لرستان