پديد آورنده :
خليلي راد، مريم
عنوان :
پاسخ دمايي فرايندهاي معدني شدن نيتروژن و نيتريفيكاسيون در طول يك رديف ارضي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
دوازده، 130، [II]ص.: جدول، نمودار
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
فرشيد نوربخش، احمد جلاليان
استاد مشاور :
مصطفي كريميان اقبال
توصيفگر ها :
آمينيزاسيون , آمونيفيكاسيون , توپوگرافي , بيومس ميكروبي
تاريخ نمايه سازي :
27/4/86
استاد داور :
حسين شريعتمداري، پرويز احسان زاده
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Abstract Topography is a main factor that exerts a significant control on soil properties Itsignificantly affects the spatial distribution of soil moisture temperature and organicmatter Minor changes in topography can result in large differences in edaphiccondition Moreover these changes can occur across relatively short distances Nitrogencycling within terrestrial ecosystems is a dynamic process that displays substantialvariability at both large and small spatial scales Understanding the effect of topographyon N cycling process and soil enzyme activities is crucial The objectives of this studywere to understand i landscape scale variability of soil biological indices such asmicrobial biomass nitrogen nitrogen mineralization basal respiration and soil enzymeactivities involved in N cycling and ii Temperature response of nitrogen mineralizationand nitrification along a toposequence in Godar Kabk region Composited soil sampleswere taken from different slope position The samples were air dried and passedthrough a 2 mm sieve Results revealed that microbial indices Q10 and activation energyaffected significantly by slope position More microbial activities were found indownslope marked by the highest level of soil organic matter and plant biomasscomparing with up and midslopes Significant correlations were observed between SOCand other measured biological indices in toeslope In contrast no strong correlation wasobserved among the biological indices in other position of slope The degree ofassociations among the biological indices may be attributed to the different quality ofsoil organic matter Different amount of Q10 and activation energy along a slopeposition confirm that organic carbon quality is different and affected by soil erosion andplant residue The results of this research show the efficiency of biological indices suchas Q10 and activation energy in reflecting the effect of landscape scale variability andmanagement practices
استاد راهنما :
فرشيد نوربخش، احمد جلاليان
استاد مشاور :
مصطفي كريميان اقبال
استاد داور :
حسين شريعتمداري، پرويز احسان زاده
