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چمنی, رضا, صادقی, سید حمیدرضا, وفاخواه, مهدی, نقدی, مریم. (1401). پایایی، تاب‌آوری و آسیب‌پذیری حوزه آبخیز چالوس مبتنی بر شاخص خشک‌سالی. سامانه مدیریت نشریات علمی, 14(1), 65-75. doi: 10.22092/ijwmse.2021.352600.1855
رضا چمنی; سید حمیدرضا صادقی; مهدی وفاخواه; مریم نقدی. "پایایی، تاب‌آوری و آسیب‌پذیری حوزه آبخیز چالوس مبتنی بر شاخص خشک‌سالی". سامانه مدیریت نشریات علمی, 14, 1, 1401, 65-75. doi: 10.22092/ijwmse.2021.352600.1855
چمنی, رضا, صادقی, سید حمیدرضا, وفاخواه, مهدی, نقدی, مریم. (1401). 'پایایی، تاب‌آوری و آسیب‌پذیری حوزه آبخیز چالوس مبتنی بر شاخص خشک‌سالی', سامانه مدیریت نشریات علمی, 14(1), pp. 65-75. doi: 10.22092/ijwmse.2021.352600.1855
چمنی, رضا, صادقی, سید حمیدرضا, وفاخواه, مهدی, نقدی, مریم. پایایی، تاب‌آوری و آسیب‌پذیری حوزه آبخیز چالوس مبتنی بر شاخص خشک‌سالی. سامانه مدیریت نشریات علمی, 1401; 14(1): 65-75. doi: 10.22092/ijwmse.2021.352600.1855

پایایی، تاب‌آوری و آسیب‌پذیری حوزه آبخیز چالوس مبتنی بر شاخص خشک‌سالی

مهندسی و مدیریت آبخیز
مقاله 6، دوره 14، شماره 1، فروردین 1401، صفحه 65-75    اصل مقاله (1.35 M)
نوع مقاله: مقاله پژوهشی
شناسه دیجیتال (DOI): 10.22092/ijwmse.2021.352600.1855
نویسندگان
رضا چمنی1؛ سید حمیدرضا صادقی* 2؛ مهدی وفاخواه2؛ مریم نقدی3
1دانشجوی دکتری علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور
2استاد، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور
3دانشجوی کارشناسی ارشد علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور
چکیده
خشک‌سالی از جمله بلایای طبیعی مرتبط با آب و هوا و یکی از بزرگ‌ترین تهدیدهای بقای انسان است که تأثیرات نامطلوبی بر پایداری اجتماعی، اقتصادی و محیط‌ زیستی می‌گذارد. حال آن‌که مقوله‌های مرتبط بر آن و از جمله تأثیر آن بر سلامت حوزه آبخیز کمتر مورد توجه قرارگرفته است. بر همین اساس، در این پژوهش سعی شده است تا سلامت حوزه آبخیز چالوس بر اساس تغییرات پایایی (Rel)، تاب‌آوری (Res) و آسیب‌پذیری (Vul) تحت تأثیر خشک‌سالی مستند به دوره آماری ۱۳۶۵ تا ۱۳۹۴ مورد ارزیابی قرار گیرد. برای انجام این پژوهش، داده‌های بارندگی نُه ایستگاه با روش عکس مجذور فاصله برای آبخیز میان‌یابی شد. سپس، با تعیین میانگین و انحراف معیار داده‌ها، شاخص خشک‌سالی (SPI) تعیین شد. همچنین، برای محاسبه شاخص‌های Rel، Res و Vul از مقدار میانه شاخص SPI استفاده شد. سپس، با محاسبه مقدار میانگین هندسی این شاخص‌ها وضعیت کلی سلامت آبخیز تعیین شد. نتایج پژوهش نشان داد، شاخص SPI در دوره آماری مذکور با مقادیری بین 1.43- و 2.25 الگویی همانند بارندگی داشته و با افزایش بارندگی در انتهای دوره، این شاخص نیز مقادیر مثبت بیشتری را به‌ خود اختصاص داده است. ارزیابی سلامت آبخیز نیز نشان داد که شاخص‌های Rel، Res و Vul به‌ترتیب 0.5، 0.23 تا 0.62 و 0.06 تا یک را داشته است. میانگین هندسی این شاخص‌ها نیز  بین 0.19 تا 0.58 بود. نهایتاً متوسط شاخص سلامت حوزه آبخیز چالوس بر اساس پویایی شاخص خشک‌سالی 0.45 و در گروه "متوسط" بود که نتایج به‌دست ‌آمده دلالت بر متوسط بودن شرایط اقلیمی حاکم بر منطقه و طبعاً نقش ماشه‌ای دخالت‌های انسانی در تهدید سلامت آبخیز چالوس دارد. یافته‌های بررسی نقش مهمی در تبیین شیوه‌های مدیریت سازگار حوزه آبخیز مذکور ایفا خواهد کرد.
کلیدواژه‌ها
آبخیز سالم؛ ارزیابی سلامت بوم‌سازگان؛ تخریب آبخیز؛ شاخص SPI؛ مدیریت جامع آبخیز
عنوان مقاله [English]
Reliability, resilience, and vulnerability of Chalous Watershed based on drought index
نویسندگان [English]
Reza Chamani1؛ Seyed Hamidreza Sadeghi2؛ Mehdi Vafakhah2؛ Maryam Naghdi3
1PhD Student in Watershed Management, Faculty of Natural Resources, Tarbiat Modares University, Noor. Iran
2Professor of Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran
3MSc Student, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran
چکیده [English]
Drought is one of the natural disasters related to climate and one of the most important threats to human survival leading to adverse effects on social, economic, and environmental sustainability. In this study, it has been tried to evaluate the changes in reliability, resilience, and vulnerability of the Chalous Watershed under the influence of drought in the period of 1982-2017. In this vein, rainfall data of nine stations were interpolated using invers distance squared method to the whole watershed. The SPI drought index was then determined through determining the mean and standard deviation of the data. To calculate Rel, Res and Vul indices, the mean value of SPI Index was used. By calculating the geometric mean value of these indicators, the general health status of the watershed was determined and quantified. The results showed that the SPI Index in this period varied between -1.43 and 2.25. Drought index had a similar pattern to that of rainfall with an increasing trend at the end of the period. The watershed health assessment also showed that the indicators of reliability, resilience, and vulnerability were found 0.5, from 0.23 to 0.62 and from 0.06 to 1, respectively. The geometric mean of these indices was also ranged between 0.19 and 0.58. The overall health condition of the Chalous Watershed based on the dynamics of drought index with a mean index of 0.45 was classified as “moderate”. The findings of the current research will play an important role in explaining the methods of adaptive management of the watershed.
کلیدواژه‌ها [English]
Healthy watershed, Integrated watershed management, Ecosystem health, Watershed degradation
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