Experimental Investigation and Numerical Simulation of Saline Irrigation Water Effects on the Unsaturated Soil Columns
- سال انتشار: 1398
- محل انتشار: اولین کنگره بین المللی و چهارمین کنگره ملی آبیاری و زهکشی ایران
- کد COI اختصاصی: NCIID04_153
- زبان مقاله: انگلیسی
- تعداد مشاهده: 504
نویسندگان
Associate Professor, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
CEO, Tarrah Gostar Abara Company, Tabriz, Iran.
چکیده
Study of solute movement and salt accumulation in the soils has been interested by researchers in the recent decades. A proper understanding of these phenomena can improve the strategies related to application of saline irrigation water and salts leaching practices. Several approaches have been used for simulation of solute movement through soil profile. In this research HYDRUS-2D software was used for simulation of irrigation water salt movement and distribution in 36 soil columns included 3 soil textures (light, medium and heavy textures), 4 salinity levels (0.09, 4, 8 and 12 ds/ m) and 3 replications. Water applications were done for a 45 days period and salt distributions were measured in 3 depths along the soil columns at the end of this period. Consequently, the same conditions were defined for HYDRUS and the accuracy of this software in the simulation of salt distribution was investigated. Comparisons between observed and simulated data clarified that HYDRUS have satisfactory accuracy in the simulation of salt distribution in unsaturated soils. However, HYDRUS has better performance in the heavy and medium soil textures with respective RMSE values of 0.14 and 0.13 gr l-1 in comparison with light texture soil with RMSE value of 0.25 gr l-1. Moreover, the result showed that by increasing solute concentration, the accuracy of HYDRUS decreasesکلیدواژه ها
HYDRUS 2D, simulation, soil columns, solute movement line.مقالات مرتبط جدید
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.