ارزیابی تأثیر عملیات آبخیزداری بیولوژیک بر میزان تولید رسوب با استفاده از شاخص پیوستگی در ایستگاه معرف زوجی گنبد همدان

نویسندگان
هادی نظری پویا 1
رضا بهراملو 2
مهدی سپهری 3
حمیدرضا پیروان 4
سارا پرویزی 5
ابراهیم عسگری 5
1 استادیار پژوهش بخش تحقیقات آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان همدان، سازمان تحقیقات،آموزش و ترویج کشاورزی،
2 دانشیار پژوهش بخش تحقیقات آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان همدان، سازمان تحقیقات،آموزش و ترویج کشاورزی، همدان، ایران)
3 دانشجو آموخته گروه علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی یزد، یزد، ایران
4 دانشیار پژوهشکده حفاظت خاک و آبخیزداری، پژوهشکده حفاظت خاک و آبخیزداری استان تهران، سازمان تحقیقات،آموزش و ترویج کشاورزی، تهران، ایران
5 دانشجوی دکترا گروه علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی یزد، یزد، ایران
چکیده
فرسایش خاک و مشکلات مربوط به رسوب توأم با مسائل و مشکلات چشم­گیری بر محیط‌زیست و کشاورزی ازجمله زیان‌های اقتصادی، کاهش کیفیت آب، کاهش ظرفیت ذخیره‌سازی مخازن و کاهش تولید کشاورزی همراه است که در این میان فعالیت‌های آبخیزداری نقش برجسته‌­ای در کاهش میزان فرسایش خاک و رسوب تولیدی دارند. بدین منظور در این تحقیق، با استفاده از شاخص پیوستگی اقدام به ارزیابی فعالیت‌های آبخیزداری بر روی میزان رسوب تولیدی در حوضه زوجی گنبد همدان شد. در این راستا، ابتدا به برآورد شاخص پیوستگی در کرت‌­های فرسایشی در حوضه‌های شاهد و نمونه در زمان‌­های رویدادهایی که منجر به تولید رسوب شده­‌اند، پرداخته شد. در ادامه به‌منظور برآورد میزان رسوب­دهی حوضه‌های شاهد و نمونه با استفاده از شاخص پیوستگی، یک ارتباط رگرسیونی بین داده‌­های شاخص پیوستگی و کرت­ها برقرار شد. درنهایت با مقایسه رسوب برآورد شده در حوضه‌های شاهد و نمونه با استفاده از شاخص پیوستگی، میزان تأثیر عملیات آبخیزداری بر میزان درجه تولید رسوب سنجیده شد. نتایج نشان داد که مقدار متوسط رسوب تولیدی در زیر حوضه‌های نمونه و شاهد به ترتیب برابر 0/003 و 0/005 تن در هکتار یعنی مقدار رسوب در زیر حوضه نمونه، 45 درصد کم‌تر از زیر حوضه شاهد است که این اختلاف ناشی از تأثیر عملیات آبخیزداری در زیر حوضه نمونه بوده است.
کلیدواژه‌ها
عملیات بیولوژیک
حفاظت خاک
کرت رسوب
مدیریت حوزه‌ آبخیز

عنوان مقاله English

Evaluation of the effect of biological watershed operations on the amount of sediment production using Connectivity Index in Hamedan Gonbad paired reagent station

نویسندگان English

Hadi Nazaripoya 1
R. Bahramloo 2
M. Sepehri 3
H.R. Peyrovan 4
S. Parvizi 5
E. Asgari 5
1 Watershed Research Department, Hamedan Agricultural and Natural Resources Research and Education Center, AREEO, Hamedan, Iran
چکیده English

Soil erosion and related problems i.e. sedimentation are associated with significant issues and problems on the environment and agriculture, including economic losses, reduction of water quality, storage capacity of reservoirs and agricultural production, among which watershed activities play a prominent role in reducing the amount of soil erosion and sediment yield. For this purpose, in the present research, the watershed management activities were evaluated on the amount of sediment yield, using the Connectivity Index in the Gonbad paired catchment of Hamadan province. In this regard, firstly, the estimation of the continuity index was conducted in the erosion plots installed in the control and impacted watersheds during the events that led to sediment production. Then, a regression relationship was established between the data of the Connectivity Index and the erosion plots sediment yield using the Connectivity Index in order to estimate the rate of sediment yield of control and impacted watersheds. Finally, the impact of watershed practices on the degree of sediment yield was measured by comparing the estimated sediment in control and impacted areas using the Connectivity Index. The results showed that the average amount of sediment produced in the sample and control sub-basins is 0.003 and 0.005 tons per hectare, respectively, that is, the amount of sediment in the sample sub-basin is 45% less than the control sub-basin, and this difference is due to the effect of watershed management operations in the sample sub-basin.

کلیدواژه‌ها English

Biological practices
Erosion plot
Soil conservation
Watershed management
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