۴۸۷۴پ
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بررسی کاربرد سیستم تصمیم گیری میکرولیز ( ( Micro LEIS DSS بعنوان روشی نوین در ارزیابی تناسب اراضی (مطالعه موردی بخشی از اراضی جنوب شهرستان اهر)
/فرزین شهبازی
تبریز: دانشگاه تبریز
۲۸۵ ص.
:، جدول، نمودار، عکس، لوح فشرده
چاپی
کتابنامه ص.: ۲۴۵-۲۶۷
دکتری
مهندسی کشاورزی-خاکشناسی
۱۳۸۷/۰۹/۲۵
تبریز: دانشگاه تبریز
ارزیابی اراضی یک روش قطعی برای پیشگوئی قابلیت و استعداد اراضی با تأثیر توأم تغییرات کاربری اراضی و اقلیمی بر یکدیگر می باشد .کشاورزی پایدار که از تعامل نتایج ارزیابی تناسب و تخریب پذیری اراضی حاصل می شود هدف اصلی ارزیابی اراضی می باشد که در ارزیابی اراضی جنوب شهرستان اهر واقع در استان آذربایجان شرقی) ایران (به آن پرداخته شده است .کاربری های مختلف بر روی خاکهای حاصل از مواد مادری مختلف از قبیل سنگ آهک، آبرفت های قدیمی و صخره های رسوبی و آتشفشانی در این ناحیه رایج است .مساحت محدوده مورد مطالعه تقریبا ۹۰۰۰ هکتار می باشد که بین طول شرقی۴۷ //۰۰/۰۰تا۴۷ //۳۰/۰۷و عرض شمالی۳۸ //۰۰/۲۴تا۳۸ //۳۰/۲۸در ارتفاعی حدود ۱۳۰۰ الی ۱۶۰۰ متر از سطح آزاد دریا با دامنه شیب بین ۰ تا ۳۰ درصد قرار دارد .دشت های مسطح و آبرفتی، تپه و کوه به عنوان واحدهای فیزیوگرافی در این منطقه کلاس بندی شدند .اطلاعات مرفولوژیکی و تجزیه ای) تجزیه های فیزیکی و شیمیائی (از بررسی و مطالعه ۴۴ پروفیل خاک اخذ و سپس در نرم افزار بانک اطلاعاتی خاک(SDBm + (ذخیره شدند .میانگین وزنی داده ها برای سه بخش کنترلی بر
Land evaluation is a formal way to predict land capability by interactive changes in land use and climate. Sustainable agriculture is the main goal of land evaluation which can be achieved by interaction between land suitability and land vulnerability evaluations. The current study deals with sustainable land suitability evaluation of Ahar soils, located in East Azarbaijan, Iran. It contains different kinds of land use associated with soils of different parent material, such as limestone, old alluvium, and volcano-sedimentary rocks. Study area covers about 9000 ha, between 47000/00// to 47007/30// east longitude and 38024/00// to 38028/30// north latitude. slopes range from level to 30 , and the elevation is from 1300 m to 1600 m above sea level. Flat, alluvial plains, hillside, and mountain are the main physiographical units in the study area. Soil morphological and analytical data were collected from 44 soil profiles representative of the study area and stored in SDBm plus database. Three control sections: 0-50 cm, 25-50 cm and 0-100 cm were calculated by "soil layer generator" to apply and run the models. Agro-climate data, referred to temperature and precipitation, were collected from Ahar meteorological station for more than 20 recently consecutive years. A future scenario of climate change in the area land evaluation was calculated according to the Intergovernmental Panel on Climate Change (IPCC) on regions of Asia under scenario A1 (highest future emission) for 2080s. The agricultural land uses considered for evaluation were wheat (Triticum aestivum), alfalfa (Medicago sativa), sugar beet (Beta vulgaris), potato (Solanum tubersum), and maize (Zea mays) crops To reverse the negative environmental impacts of agriculture, a land evaluation decision support system (DSS) known as MicroLEIS-DSS was used to design the most sustainable land use and management practices for selected benchmark sites. This DSS tools is based on the multifunctional evaluation of soil quality, using input data collected in standard soil surveys, and with particular reference to the peculiarities of the Mediterranean region and recalibration and validation tests were applied for the new condition in this work. Specific agro-ecological strategies to prevent soil degradation in the benchmark sites were designed within two major groups: i) Strategies related to land use planning at a regional level: segregation of agricultural lands, restoration of marginal areas, diversification of crop rotation, and identification of vulnerability areas; and ii) those related to land management planning at a farm level: organic matter restoration, formulation of tillage practices and workability timing, optimum machinery use, and input rationalization. The predicted results of applying the 12 agro-ecological land evaluation models constituents of MicroLEIS DSS are presented and discussed for each application site. The main conclusion of this research work is that using soil type information in decision making is at the heart for sustainable use and management of agricultural land. This agro-ecological approach can be especially useful when formulating soil-specific agricultural practices to reverse environmental degradation, based on the spatial variability of soils and related resources. The use of geographical information system (GIS) technology leads to the rapid generation of thematic maps and area estimates which in the present work, results from MicroLEIS models were combined with GIS (Arc View 3.2) in order to develop a computerized spatial database with the aim of suggesting suitable land management strategies for environment conservations.
Land suitability evaluation
Vulnerability
Modeling
MicroLEIS Decision Support System
Climate change
Management recommendations
شهبازی، فرزین
جعفر زاده، علی اصغر، استاد راهنما
سرمدیان، فریدون، استاد راهنمای همکار
نیشابوری، محمدرضا، استاد مشاور
اوستان، شاهین، استاد مشاور همکار
نمایه‌سازی قبلی
