Iranian Jornal of Watershed Management Science&Engineering
مجله علوم ومهندسی آبخیزداری ایران
jwmseir
Agriculture
http://jwmsei.ir
1
admin
2008-9554
2008-9554
8
10.22034
14
8888
13
fa
jalali
1398
9
1
gregorian
2019
12
1
13
47
online
1
fulltext
fa
برآورد رطوبت خاک با استفاده از سنجش از دور نوری، حرارتی و راداری (مطالعه موردی: اراضی جنوب تهران)
Estimation of soil moisture using optical, thermal and radar Remote Sensing )Case Study: South of Tehran(
تخصصي
Special
پژوهشي
Research
<strong> <span style="font-family:b lotus;"><span style="font-size:12.0pt;"> رطوبت خاک یکی از پارامترهای مهم محیطی است. روش­ های سنتی اندازهگیری میدانی رطوبت خاک نمی ­توانند تغییرات مکانی رطوبت را به</span></span></strong><strong><span dir="LTR"><span style="font-size:12.0pt;"></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">نحو مطلوب نشان دهند</span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">.</span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> سنجش از دور نقش کاربرد وسیعی در این امر پیدا کرده است. </span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">هدف</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">پژوهش،</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">دسترسی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">به یک </span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">مدل برآورد</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">رطوبت</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">خاک</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">در</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">جنوب تهران است. دادههای</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">ماهوارهای</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">لندست</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">8</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">و ماهواره راداری </span></span><span dir="LTR"><span style="font-size: 12pt;">-1</span></span><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">Sentinel </span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> از</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">استان</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">تهران تهیه شد. </span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">128 نمونه</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">خاک</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">هم</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">زمان</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">با</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">گذر</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">ماهواره</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">از</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">منطقه</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">برداشت</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">و در</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">مرحله</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">اعتبارسنجی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">استفاده</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">شدند</span></span></strong><strong><span dir="LTR"><span style="font-size:12.0pt;">.</span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> با پیش پردازشهای لازم بر روی تصاویر ماهوارهای و با بهره گیری از</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">چهار گروه از</span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> شاخص های مختلف: 1) </span></span></strong> <strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">SAVI</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">،</span></span></strong> <strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">NDVI</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">،</span></span></strong> <strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">MI</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">،</span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">NDWI</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> 2)باندهای لندست8 3) فیلترهای رادار 4) </span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">LST</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> اقدام به مدل سازی رطوبت خاک گردید</span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">. بررسی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">دقت</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">توابع</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">و</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">معرفی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">دقیقترین مدلها،</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">با</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">محاسبهی انواع روابط رگرسیونی بین معیارهای مذکور و نقاط زمینی انجام</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">شد</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">که</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">نتایج</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">حاصل</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">از</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">مقایسهی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">روابط در</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">گام</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">نهایی،</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">به</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">معرفی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">دو</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">مدل</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">رگرسیون چند متغیره برای</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">برآورد رطوبت منطقه</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">مورد نظر</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">ختم</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">گردید. نتایج</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">نشان</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">دادند</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">که مدلهای</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">معرفی</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">شده از ضریب همبستگیِ مناسب </span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">R<sup>2</sup>=72</span></span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">و </span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">R<sup>2</sup>=81</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> برخوردارند</span></span></strong><strong><span dir="LTR"><span style="font-size:12.0pt;">.</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">همچنین </span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">در میان شاخصهای موجود در چهار گروه، </span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">شاخص </span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">SAVI</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;">، باند1، باند11، فیلتر لی و </span></span></strong><strong><span dir="LTR"><span style="font-family:times new roman,serif;"><span style="font-size:12.0pt;">LST</span></span></span></strong><strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"> ، بیشترین همبستگی برای برآورد رطوبت خاک را دارا میباشند.</span></span></strong> <strong><span style="font-family:b lotus;"><span style="font-size:12.0pt;"></span></span></strong>
Traditional methods of field measurement of soil moisture in addition to the difficulty, the need for manpower and money and fail to take place on a large scale to be able to show moisture. Therefore, remote sensing has become a widespread use<span dir="RTL"> .</span>Landsat 8 satellite data and Sentinel-1 radar satellite from Tehran were provided. 72 soil samples were taken at the same time by satellite passing from the area and used in the validation phase With the necessary processing on satellite images and utilizes four different groups of indicators: 1) SAVI, NDVI, MI, NDWI 2) bands of Landsat 8 3) filters Radar 4) LST to modeling soil moisture. The investigation of the accuracy of functions and the introduction of the most accurate models was done by calculating the regression relations between these criteria and the ground points. The results of comparison of relations in the final step introduced two multivariate regression models to estimate the moisture content of the proposed area. The results showed that the proposed models have a good correlation coefficient of R2 = 62 and R2 = 73. Also, among the indicators in the four groups, SAVI, Band 1, Band 11, Li and Least filters have the highest correlation for estimating soil moisture content.Keywords: Remote Sensing, Soil Moisture, Landsat 8, Sentinel-1<span dir="RTL">.</span>
سنجش از دور, رطوبت خاک, لندست 8, Sentinel-1
Remote Sensing, Soil Moisture, Landsat 8, Sentinel-1
63
74
http://jwmsei.ir/browse.php?a_code=A-10-658-2&slc_lang=fa&sid=1
Keyvan
Bagheri
کیوان
باقری
k.bagheri1981@gmail.com
100319475328460012684
100319475328460012684
Yes
دانشگاه تهران
Milad
Bagheri
میلاد
باقری
Milad.bagheri@ut.ac.ir
100319475328460012685
100319475328460012685
No
دانشگاه تهران
Ali Asghar
Hosein zadeh
علی اصغر
حسین زاده
100319475328460012686
100319475328460012686
No
دانشگاه تهران
منصور
پروین
mansorparvin@yahoo.com
100319475328460012687
100319475328460012687
No
دانشگاه پیام نور