ارزیابی تاثیر ویژگی‌های فیزیکی- شیمیایی خاک بر گسترش فرسایش خندقی ‏(مطالعه موردی: شهرستان دره شهر)‏

نوع مقاله: مقاله اصلی

نویسندگان

1 دکترای علوم و مهندسی حفاظت آب و خاک، دانشگاه ایلام، ایلام، ایران

2 دانشجوی دکترای ژئومورفولوژی، دانشگاه تهران، تهران، ایران

چکیده

این پژوهش به‌منظور ارزیابی تأثیر ویژگی‌های فیزیکی- شیمیایی خاک بر گسترش خندق در شهرستان دره ‌شهر استان ایلام انجام شد. در همین راستا تعداد 36 خندق در پهنه خندقی دره شهر در استان ایلام انتخاب شدند. سپس خصوصیات ژئومتری و خصوصیات فیزیکی-شیمیایی خاک خندق‌ها با استفاده از عکس‌های هوایی، نقشه‌های رقومی مربوطه و عملیات‌ میدانی مشخص شدند. برای تعیین میزان اثرگذاری این عوامل بر روی هریک از مشخصات ژئومتری خندق و رابطه بین متغیرهای وابسته و مستقل با استفاده از رگرسیون چند متغیره به دست آمد. نتایج نشان داد که میزان شوری، نسبت سدیم قابل جذب و سدیم محلول دارای بیشترین ضریب تأثیر و بیشترین نقش را در گسترش خندق دارند. حال‌آنکه میزان مواد آلی و مجموع کلسیم و منیزیم چون نقش چسبندگی و فولکوله کردن خاک را داشته مانع از گسترش خندق می‌شوند. همچنین بر اساس مدل گسترش سطح مقطع میزان نسبت سدیم قابل جذب و سدیم تبادلی دارای بیشترین ضریب تأثیر در افزایش سطح مقطع است. میزان گچ و مجموع کلسیم و منیزم بیشترین نقش را در مهار و جلوگیری از گسترش ابعاد خندق ایفا کردند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Assessment the impact of soil physicochemical characteristics on the development of gully erosion (Case study: Darrehshahr Township)

نویسندگان [English]

  • Ghobad Rostamizad 1
  • zahra Khanbabaei 2
1 Department of Soil and Water Conservation, Faculty of Science and Engineering, University Ilam, Ilam, Iran
2 PhD Scholar, Department of Geomorphology, Tehran University, Tehran, Iran
چکیده [English]

This study was performed to evaluate the effect of soil physicochemical characteristics on the
gully expansion in the Darrehshahr Township of Ilam Province, Iran. In this regard, 36 gullies
were selected. The soil physicochemical properties and geometry characteristics of gullies
were tested using aerial photography, the digital maps, and field operations. The multiple
regression was used to determine the impact of these factors on each gully geometry
characteristics and to establish relationship between dependent and independent variables.
The results showed that EC, SAR, and Na+ have the highest impact and play the most
important role in the development of gully. Whereas amount of organic matter and total of
Ca+++Mg++ prevent gully development because of their soil adherence and flocculating
nature. Moreover, based on the cross-section development model, the amount of SAR and the
Na+ had the highest impact in the increasing cross section of gully. However, the amount of
gypsum and total of Ca++ and Mg++ play the most important role in control and prevent of the
gully development.

کلیدواژه‌ها [English]

  • Geometric Characteristics
  • Multiple regression
  • Gully Erosion
  • Soil Physico-Chemical Characteristics
  • Aerial Photo
Ahmadi M. (2011). Analysis factors affecting the formation and expansion of Gully erosion (Case Study: Mesquite Plains Lamerd Basin, Gulf). M.Sc. Thesis, faculty of Geography, Tehran University. 113 Pages [In Persian].
 
Battani M. C. and Grismer M. E. (2000). Rainfall Runoff and erosion in Napa Vally vineyards: effect of slope, cover and roughness. Hydrol. Proces. 14(7), 1289-1304.
 
Bayati Khatibi M. Rajabi M. and Karami F. (2011). Investigation of topographic thresholds and analyzing role of surface materials on gully development in the hillslope of semi-arid areas, case study: Shoorchay. Geogr. Environ. Plan. J., 22(1), 15-34 [In Persian].
 
Bou Kheir R. Wilson J. and Deng Y. (2007) Use of terrain variables for mapping gully erosion susceptibility in Lebanon. Earth Surf. Proc. Land., 32, 1770–1782. 
 
Bull I. J. and Kirkby M. J. (2002). Channel heads extension. in Druland Rivers hydrology and geomorphology of semiarid channel. Wiley Chinchester, UK. 84 pp. 
 
Buttafuoco G. Conforti M. Aucelli P.P. C. Robustelli G. and Scarciglia F. (2012). Assessing spatial uncertainty in mapping soil erodibility factor using geostatistical stochastic simulation. Environ. Earth Sci., 66, 1111–1125. 
 
Dongsheng Y. Xuezheng S. and Weindorf D. C. (2006). Relationships in subtropical China. Soil Sci. Soc. China, 16(3), 304-311. 
 
Duiker S. W., Flanagan D. C. and Lal R. (2001). Erodibility and infiltration characteristics of five major soils of southwest Spain. Catena. 45(2), 103-121. 
 
Ekwe E. I. (1991). The effects of soil organic matter content, rainfall duration and aggregate size on soil detachment. Soil Technol., 4, 197-207 
 
Evans M. and J. Lindsay. (2010). High resolution quantification of gully erosion in upland peat lands at the landscape scale. Earth Surf. Proc. Land., 35(8), 876-886.
 
Evaz-zadeh Tavakoli F. (2009). Estimates of the Gully length extension using the model (Case study: Bushehr Province). MSc Dissertation. Faculty of Natural Resources, Tehran University. 112 [In Persian]. 
 
Farajzadeh M. Afzali A. Khalili Y. and Ghalichi A. (2012). Gully erosion sensitivity evaluation by using multivariate regression model (Case study: South East province; Kiasar). J. Environ. Degrad., 2 (6), 42-57 [In Persian]. 
 
Ghodousi J and Davari M. (2005). Investigate the effect of physical and chemical properties of soils in Gully erosion occurrence. 3rd National Conference on Erosion and Sedimentation. 8pp [In Persian]. 
 
Ghodousi J. (2003). Modeling of gully erosion morphology and hazard zonation its. Ph.D. Thesis, Department of Natural Resources, Tehran University.450pp [In Persian].
 
Keller Edward A. (2011). Environmental Geology, University of California, Pearson, U.S.A. 
 
Khazayi M. Shafiee A. and Mullaei A. S. (2012). Evaluation of the factors influencing in the development of gully erosion in the watershed Maron. J. Soil Res., 26(2), 164-153 [In Persian].
 
Khojeh N. Ghogousi J. and Ismaili R. (2012). Investigate the relationship between physical and chemical properties of soil and gully erosion development in the Tamar Basin Qarequzi, Golestan Province. J. Watershed Manag., 3(5), 40-27[In Persian].
 
Moradi H. R. and Saeidian H. (2011). Evaluation of some soil characteristics and landuse on the Gachsaran formation using multivariate regression. Watershed Res. 90, 86-77 [In Persian].
 
Nazari Samani A.A. Ahmadi H. Jafari M. and Ghodoosi J. (2009). Investigation of factors affecting sediment yield from gully erosion in small watersheds, case study: Dareh Kareh watershed, Boushehr. J. Phys. Geogr. Res. Quart., 69, 19-34 [In Persian]. 
 
NoorMohamadi F. (2006). Allometry and sediment production of DarrehShahr Gullies in the part of Ilam province. MSc Dissertation, Faculty of Natural Resources and Marine Sciences, Tarbiat Modarres University. 95 Page [In Persian].
 
Poesen J. Nachtergaele, J. Verstracten G. and Volentin C. (2003). Gully erosion and environmental change: Importance and research needs. Catena, 50, 91-133.
 
Rahnema Rad j. Khosravi F. and RigiNejad S. (2010). Chemical specifications of soil for creation and development of gully in the Dashtyari region, Chabahar. J. Appl. Geol., 6(1), 9-16[In Persian].
 
Ries Alves R. and Rodrigues S.C. (2005). Gully’s monitoring- morphometric and sediments study at Brazil’s Savana. J. Soc. Nat. Uberlandia, 295-304
 
Roosta D. J. Enayati K. A. and Vakili A. (2010). Survey effective of individually and combined organic and inorganic substances on the size of aggregates in a saline and sodic soil with silt loam texture. J. Sci. Technol. Agri. Nat. Resour., 15(56), 169-179 [In Persian].
 
Rostamizad Gh. (2014). Geometric Characteristics Modeling (Geometry) of Gully Erosion (case study: Darreh-e-shahr City). PhD Thesis. Faculty of Natural Resources. Tehran University. 192 [In Persian]. 
 
Rostamizad Gh. Salajegheh A. Nazari Samani A. A. and Ghodousi J. (2015). Determine affecting factors on gully head advancement and forecasts its development. Res. Geomorph., 4(1), 58- 46 [In Persian]. 
 
Rostamizad Gh. Salajegheh A. Nazari Samani A. A. and Ghodousi J. (2015). Determining effective factors on the geometric characteristics of gully erosion. Environ. Erosion Res., 4(13), 61-50 [In Persian].
 
Sadana U. S. and Bajwa M. S. (1985). Manganese equilibrium in submerged sodic soils as influenced by application of gypsum and green manuring. J. Agric. Sci. Cambridge. 104, 257-261.  
 
Shadfar S. and SobheZahedi S.h. (2007). Investigate the cause's development of Gully erosion in watershed Aliabad Gilan province. 4th Conference Science and Engineering of Watershed, faculty of Natural Resources, Tehran University. 8 [In Persian].
 
Zhou P. (2008). Effect of vegetation cover on soil erosion in a mountainous watershed. Catena, 75, 319-325.