تحلیل الگوی تغییرات پهنه آبی تالاب هامون در دوره آبگیری سالیانه و تغییرات کاربری و پوشش اراضی منطقه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکترای /محیط زیست-دانشگاه صنعتی اصفهان و عضو هیات علمی گروه محیط زیست دانشکده منابع طبیعی، دانشگاه زابل.

2 دانشیار /گروه محیط زیست دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان.

3 استاد /گروه مرتع و آبخیزداری دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان.

4 استادیار /گروه محیط زیست دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان.

5 استاد/ گروه کنترل دانشکده برق و کامپیوتر، دانشگاه صنعتی اصفهان.

چکیده

با بروز خشکسالی‌های اخیر برنامه‌ریزی جهت مدیریت منابع آب، حفظ و نگهداری آنها و همچنین حفاظت از جوامع محلی ارزش دوچندان یافته است. بررسی روند تغییرات منابع آبی خصوصا آن دسته از منابع که دارای محدودیت هستند و در طی دوره زمانی کوتاهی دچار دگرگونی می‌شوند در راستای مدیریت بهینه منابع کاربرد دارد. در این مقاله الگوی تغییرات پهنه آبی تالاب هامون مورد بررسی قرار گرفت. در اثر خشکسالی‌های اخیر و محدودیت منابع آب، این تالاب دوره‌های خشک شدن را در طی یکسال تجربه می‌کند. لذا روند آبگیری و خشک شدن تالاب در طی یکسال مورد مطالعه قرار گرفت. در این راستا با استفاده از داده‌های سنجنده OLI ماهواره لندست8 الگوی تغییرات پهنه آبی تالاب هامون با فاصله زمانی کوتاه تعیین شد. نقشه پهنه آبی و کاربری و پوشش اراضی با استفاده از روش هیبرید تهیه شد.نتایج صحت سنجی نقشه‌های تولید شده نشان داد این روش در مناطق با تنوع کاربری و پوشش اراضی بسیار مناسب است. با استفاده از نتایج این مطالعه مشخص شد که هامون هیرمند مدت زمان کوتاهتری در مقایسه با سایر قسمت‌های تالاب، دارای آب می‌باشد که لزوم برنامه ریزی جهت حمایت از مردم محلی در این منطقه را تایید می‌کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Analysis of Changes in the Hamun wetland Water Body during annual water inundation and land use land cover change

نویسندگان [English]

  • S. Maleki 1
  • A. Soffianian 2
  • S. Soltani Koupaei 3
  • S. Pourmanafi 4
  • F. Sheikholeslam 5
1 PhD student, Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran & Lecturer, Department of Natural Resources, Zabol University, Zabol, Iran.
2 Associate Professor, Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran.
3 Professor, Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran.
4 Assistance professor, Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran.
5 -Professor, Department of Computer and Electronic, Isfahan University of Technology, Isfahan, Iran.
چکیده [English]

with the recent drought the value of water resources planning, maintenance and protection of them and also conservation of local communities has doubled. The trend of changes in water resources, particularly those that resources are limited and changed in a short time period used to manage resources. In this paper, the pattern changes of water body of Hamun wetland was investigated. Since this wetland is located in a dry area, local people are related to this valuable water resource. As a result of recent drought and limited water resources, wetlands drying period is within one year. Therefore, the process of dewatering and drying wetlands were studied during one year. In this regard, Landsat 8 OLI data were used to determine the pattern of changes in water body of Hamun wetland with short intervals. The map of water body and land cover map was prepared using the hybrid method. Validation results shows is accurate enough to produce land use land cover map in areas with a diverse land use land cover classes. The results of this study show that Hamun Hirmand support water in shorter period rather than other parts that this confirms the importance of planning to support the local population in this area .

کلیدواژه‌ها [English]

  • Remote Sensing
  • Hybrid classification
  • water body change
  • Hamun wetland
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