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Register a new userPrediction of the Soil Lost Ammmount by Water Erosion in the Hawiz Dam Basin region Using the Revised Universal Soil Equation (RUSLE) and Geographic Information System Technology (GIS)
التنبؤ بكميات التربة المفقودة بفعل الانجراف المائي في منطقة حوص سد الحويز باستخدام المعادلة العالمية المعدلة (RULSE) وتقانة نظم المعلومات الجغرافية (GIS)
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Added by
Tishreen University ورقة بحثية
Publication date
2018
fields
Soil And Water
and research's language is
العربية
Authors
منى علي بركات( باحث )
Created by
Shamra Editor
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يهدف هذا البحث إلى التنبؤ بكميات التربة المفقودة بفعل الانجراف المائي في منطقة حوض سد الحويز باستخدام تقانة نظم المعلومات الجغرافية (GIS) و المعادلة العالمية المعدلة (RUSLE). تم حساب معامل الحت المطري R من علاقة حسابية بعد جمع بيانات الهطول المطري للفترة الواقعة بين 2008-2017, من محطة الأرصاد الجوية في مطار الباسل ,و تم حساب قيم k لكل عينة ترابية و ذلك بعد تحديد كل من : القوام , البناء ,الناقلية الهيدروليكية المشبعة – المادة العضوية ) و أعدت خارطة تبين التوزيع المكاني لقيم K. تم تحديد الميل باستخدام DEM لمنطقة الدراسة أدخلت خارطة الميل في علاقة رياضية من خلال برنامج ArGIS للحصول على خارطة العامل LS, و استخدمت NDVI لمنطقة الدراسة لحسب العامل C. للحصول على خارطة التنبؤ بكميات التربة المفقودة تم حساب جداء خرائط كل من (LS,C,K,) مع قيمة R . أظهرت نتائج الدراسة ان قيمة R في منطقة الدراسة تساوي 342.78 ,اما قيم العامل K فقد تراوحت بين 0.7 و 0.28 و تركزت الترب ذات القيم المنخفضة في الجزء المتوسط لمنطقة الدراسة , في حين تراوحت قيم عامل الميل بين 0و38.87 , بينما تراوحت قيم العامل C بين 0.29 في الأجزاء الغربية و 0.98 في الأجزاء الشرقية . تم تصنيف خارطة التنبؤ بكميات الفقد إلى اربع مراتب حسب خطورة الانجراف (خطر منخفض جدا –منخفض – متوسط –شديد). صنفت نتائج كميات التربة المفقودة المحتملة في منطقة الدراسة الى أربع صفوف كالاتي : قليلة جدا و تراوحت كميات الفقد بين 0-5) طن/ه/سنة, و القليلة و بلغت (5-12) طن/ه/سنة , و المتوسطة و كانت (12-24) طن/ه/سنة و الشديدة اذ تجاوزت كميات التربة المحتمل فقدها 24طن/ه/سنة .
The aim of this research is to predict the quantities of soil lost by the water erosion in the Al-Hawiz Dam basin area using GIS and RUSL. R factor was calculated through matimatical equation after collecting rain data during 2008-2017 from weather station at Basel-Al-Assad airport .k value of each soil sampl was calculated after determination of txture,structure,saturated hydrolic conductivity, and organic matter).a map were prepared showed local distribution of k values .slop factor was determined as well as using DEM for studied region, and slop map was introduced in mathematical equation through a GIS to obtain LS map .NDV used for studied region to calculate C map.To obtain predictive map of soil lost quantitis ,maps of LS,C,K was multiplicated with R value. The results showed that R value in studied region 342.78 ,while k factor value was 0.7-0.28.soil with low value concentrated at medium part of studied region,whil slop factor value was between 0 and 38.87.C factor value was 0.29 at west part and 0.98 at east part .prediction map of lost quantites was classified in to 4 degrees according erosion risk ( very low risk ,low,medium,high .The results of soil lost quantities were classified in to 4 classes in studied region : very low( 0-5) t/h/year,low( 5-12 ) t/h/year and medium ( 12-24 t/h/year and severe in which soil loss exceeded 24 t/h/year
References used
AGEL,D.lihan,T.SAHIBIN.A.R and RAHMAN,Z.A .,Application of the RUSLE Model Inforecasting Soil Erosion Atdownstream of the Pahang River Basin,Malaysia, Journal of Applied Sciences Research N.1 ,2013, 413-424
ANEJIONU, O., C.D., PETER C. NWILO and E. S. EBINNE. Long Term Assessment and Mapping of Erosion Hotspots in South East Nigeria. Remote Sensing for Land use and Planning,2013 - 6448 Abuja, Nigeria: 1-19
BELASRI ,A and LAKHOUILI ,A and Iben Halima ..Soil Erodibility Mapping and its Correlation With Soil Properties of Oued ELMakhazin Watershed Morocco .journal of Materials and Environmental Sciences N.8 ,2017,3208-3215
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