تحقیقات منابع آب ایران

تحقیقات منابع آب ایران

اولویت‌بندی توان‌مندی تولید رسوب زیرآبخیزها با استفاده از روش بهترین- بدترین و داده‌های مشاهداتی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اردبیل، سازمان تحقیقات، آموزش و ترویج کشاورزی، اردبیل، ایران.
2 استاد، گروه مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، تهران، ایران.
3 مرکز تحقیقات چشم‌انداز کشاورزی، ZALF) Leibniz) آلمان.
4 دکتری علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، تهران، ایران.
5 کارشناس ارشد علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، تهران، ایران.
6 دانشجوی دکتری علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس.
چکیده
پژوهش حاضر باهدف پهنه‌بندی زیرآبخیزها در آبخیز طالقان البرز از نظر توان‌مندی تولید رسوب با استفاده از رویکرد بهترین- بدترین (BWM) مبتنی بر روش‌های تصمیم‌گیری چندمعیاره (MCDM) انجام شد. در این راستا، شناسایی معیارهای تأثیرگذار بر تولید رسوب با تحلیل مؤلفه‌های اصلی (PCA) تعیین و پس از کمّی‌سازی این معیارها، شبکه‌ تصمیم تهیه شد. در ادامه، توان‌مندی تولید رسوب در پنج طبقه‎ با کمک نرم‌افزار ArcGIS10.8 دسته‌بندی شد. اعتبارسنجی روش MCDM  با استفاده از داده‌های واقعی رسوب در 18 زیرآبخیز صورت گرفت. نتایج نشان داد که زیرآبخیز 6 به‌عنوان زیرآبخیز بحرانی در تولید رسوب شناسایی شد و زیرآبخیزهای شمالی عموماً توان‌مندی بیش‌تری برای تولید رسوب نسبت به زیرآبخیزهای جنوبی نشان دادند. بررسی اولویت‌بندی زیرآبخیزها بیانگر این بود که رویکرد BWM با داده‌های مشاهداتی، 33/33 درصد مشابهت داشت. البته شایان ذکر است که درصد تشابه طبقه‌بندی مربوط به توان‌مندی تولید رسوب در طبقات کم و خیلی کم بین رویکرد BWM با داده‌های مشاهداتی در حدود 50 درصد بود. هم‌چنین، نتایج آزمون T مستقل نشان داد که رویکرد MCDM تفاوت معنی‌داری با داده‌های مشاهداتی در مدل‌سازی تولید رسوب نداشت. علاوه بر این، رویکرد BWM، تأثیرپذیری بالایی از معیارهایی مانند زمان تمرکز و نسبت انشعاب‌‎پذیری به‌ترتیب با مقادیر همبستگی 0/81 و 0/70 داشت. یافته‌ها نشان‌دهنده ضرورت استفاده از رویکردهای مختلف MCDM و توجه به داده‌های مشاهداتی در تحلیل‌های مرتبط با تولید رسوب در آبخیزها هستند. بر همین اساس ضرورت اتخاذ یک رویکرد جامع و ترکیبی برای بهبود مدیریت رسوب و منابع آب در مقیاس زیرآبخیزها تأکید می‌‎شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Prioritizing Sediment Generation Potential of Sub-Watersheds Using the Best-Worst Method and Observed Sediment Data

نویسندگان English

Ali Nasiri Khiavi 1
Seyed Hamidreza Sadeghi 2
Michael Maerker 3
Azadeh Katebikord 4
Padideh Sadat Sadeghi 5
Seyed Saeid Ghiasi 6
Mehdi Vafakhah 2
1 Research and Education Center for Agriculture and Natural Resources of Ardabil Province, Ardabil, Iran.
2 Professor, Watershed Management Engineering Department, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.
3 Leibniz Centre for Agricultural Landscape Research (ZALF), Germany.
4 Ph.D. in Watershed Sciences and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.
5 M.Sc. in Watershed Sciences and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.
6 Ph.D. Student, Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor 46414-356, Iran
چکیده English

This study investigated the zoning of Sub-Watersheds (SWs) in Taleqan Watershed in Alborz Province regarding Sediment Generation Potential (SGP) using the Multi-Criteria Decision-Making (MCDM)-based Best-Worst Method (BWM). The BWM approach was employed to prioritize the SWs. To this end, Principal Component Analysis (PCA) assisted in identifying the criteria conditioning SGP and after quantifying these criteria, a decision network was created considering their impacts. Subsequently, SGP was classified into five different categories using ArcGIS 10.8 software. The MCDM method was validated using observed sediment data from 18-gauge stations in the outlet of SWs. The results indicated that SW6 was identified as a critical area from the viewpoint of SGP, with northern SWs generally demonstrating a higher potential for sediment generation than southern SWs. The prioritization of SWs revealed that the BWM approach had 33.33% number-wise similarity with that obtained based on observed data. Notably, the percentage of similarity between the BWM approach and observed data in SGP classification was approximately 50% in the low and very low categories. The independent samples t-test showed that the MCDM approach had insignificant differences with the observed data in prioritizing SGP. Moreover, the BWM approach displayed a high correlation with criteria such as time of concentration and bifurcation ratio with respective correlation values of 0.81 and 0.70. The findings underscored the significance of employing various MCDM approaches while considering observed data in sediment yield-related analyses. Thus, a comprehensive and integrated approach at the SW scale is emphasized to enhance sediment management and water resource management.

کلیدواژه‌ها English

Optimal Decision-Making
Multi-Criteria Decision-Making (MCDM)
Interdisciplinary Approach
Sediment Modeling
Integrated Watershed Management (IWM)
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  • تاریخ دریافت 10 آبان 1403
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