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Prediction 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)

2309   13   81   0.0 ( 0 )
 Publication date 2018
  fields Soil And Water
and research's language is العربية
 Created by Shamra Editor




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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


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Research summary
يهدف هذا البحث إلى التنبؤ بكميات التربة المفقودة بفعل الانجراف المائي في منطقة حوض سد الحويز باستخدام تقانة نظم المعلومات الجغرافية (GIS) والمعادلة العالمية المعدلة (RUSLE). تم حساب معامل الحت المطري (R) باستخدام بيانات الهطول المطري للفترة من 2008 إلى 2017، وتم حساب قيم معامل قابلية التربة للانجراف (K) لكل عينة ترابية بعد تحديد القوام والبناء والناقلية الهيدرولوكية المشبعة والمادة العضوية. كما تم تحديد الميل باستخدام النموذج الرقمي للارتفاع (DEM) وأدخلت خارطة الميل في علاقة رياضية للحصول على خارطة العامل LS. استخدمت NDVI لحساب العامل C. للحصول على خارطة التنبؤ بكميات التربة المفقودة، تم حساب جداء خرائط كل من R وLS وC وK. أظهرت النتائج أن قيمة R في منطقة الدراسة تساوي 342.78، بينما تراوحت قيم العامل K بين 0.7 و0.28. تراوحت قيم عامل الميل بين 0 و38.87، بينما تراوحت قيم العامل C بين 0.29 في الأجزاء الغربية و0.98 في الأجزاء الشرقية. تم تصنيف خارطة التنبؤ بكميات التربة المفقودة إلى أربع مراتب حسب خطورة الانجراف: خطر منخفض جداً، منخفض، متوسط، وعالٍ. صنفت النتائج كميات التربة المفقودة المحتملة في منطقة الدراسة إلى أربع صفوف: قليلة جداً (0-5 طن/هكتار/سنة)، قليلة (5-12 طن/هكتار/سنة)، متوسطة (12-24 طن/هكتار/سنة)، وشديدة (أكثر من 24 طن/هكتار/سنة).
Critical review
دراسة نقدية: يعد هذا البحث خطوة هامة في مجال التنبؤ بكميات التربة المفقودة بفعل الانجراف المائي باستخدام تقانة نظم المعلومات الجغرافية والمعادلة العالمية المعدلة. ومع ذلك، يمكن تحسين البحث من خلال توسيع نطاق الدراسة لتشمل فترات زمنية أطول وبيانات أكثر تنوعاً. كما يمكن تحسين دقة النتائج من خلال استخدام تقنيات حديثة في جمع البيانات وتحليلها. يفضل أيضاً إجراء دراسات مقارنة مع مناطق أخرى لاختبار مدى دقة وفعالية النموذج المستخدم. بالإضافة إلى ذلك، يمكن تضمين المزيد من العوامل البيئية والاجتماعية التي قد تؤثر على عملية الانجراف المائي لتقديم صورة أكثر شمولية.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي من البحث هو التنبؤ بكميات التربة المفقودة بفعل الانجراف المائي في منطقة حوض سد الحويز باستخدام تقانة نظم المعلومات الجغرافية والمعادلة العالمية المعدلة.

  2. ما هي الفترة الزمنية التي تم جمع بيانات الهطول المطري خلالها؟

    تم جمع بيانات الهطول المطري للفترة من 2008 إلى 2017.

  3. ما هي العوامل التي تم حسابها للحصول على خارطة التنبؤ بكميات التربة المفقودة؟

    تم حساب عوامل الحت المطري (R)، قابلية التربة للانجراف (K)، الميل (LS)، والغطاء النباتي (C) للحصول على خارطة التنبؤ بكميات التربة المفقودة.

  4. كيف تم تصنيف كميات التربة المفقودة المحتملة في منطقة الدراسة؟

    تم تصنيف كميات التربة المفقودة المحتملة إلى أربع صفوف: قليلة جداً (0-5 طن/هكتار/سنة)، قليلة (5-12 طن/هكتار/سنة)، متوسطة (12-24 طن/هكتار/سنة)، وشديدة (أكثر من 24 طن/هكتار/سنة).


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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