7501

6996

كارشناسي ارشد

منابع طبيعي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1391

چهارده، 99ص.: مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

عيسي ابراهيمي

مهدي نادري

23/11/91

نوراله ميرغفاري، اميد فرهاديان

1396/09/22

كتابنامه

منابع طبيعي

مهندسي منابع طبيعي

ID6996

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Water Quality Monitoring of Tajan s River Using Qualitative and Biological Indices Fatemeh Ghodrati Email address F ghodrati@in iut ac ir Date of Submission 2012 02 21 Department of Natural Resources Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Eisa Ebrahimi e ebrahimi@cc iut ac ir Abstract The biological and ecological studies of the water resources are amongst the most important subject in research For this purpose identifying the ecosystem characteristics organisms and environmental factors are the first step Water quality assessment through permanent monitoring is the base of a program for controlling and decreasing of pollution Therefore They could be considered as water quality s index in aquatic ecosystems The use of benthic macroinvertebrates as bioandicators is the most practical method of water quality assessment Tajan river is one of the rivers of Caspian Sea southern sub basins This river originates from Hezarjarib and Alborz Mountains then traverse 120 km and drains into the Caspian Sea Watershed area of this river is about 2000 km2 In order to estimate water quality indices HFBI NSFWQI BMWP and ASPT as well as richness and biodiversity indices of benthic macroinvertebrate four stations were selected in Tajan river from before the city to Mahfourouz Mahalle Bottom samples were collected monthly from May 2011 to April 2012 by Surber s sampler 34 34cm2 and in order to analysis physicochemical factors temperature pH EC turbidity BOD5 COD TDS dissolved oxygen oxygen saturation percent nitrate phosphate and fecal coliform water was sampled seasonally Overall 9 families belonging to 7 orders and 3 phyla were identified among which the aquatic insects had the highest diversity and abundance The results of Tajan River zoning on the base of NSFWQI showed that the quality of Tajan River is not acceptable During the period of study the calculated data for this index were compeletly placed it in the poor quality class BMWP index classified Tajan River in the moderate and poor quality classes Also according to the Shannon Viner diversity index the river was categorized as moderate pollution class ASPT index evaluated the water quality as suspected to pullotion and average pullotion HFBI index classified water quality in poor and poor partly classes In this study there were limitations in evaluating the water quality because of river substrate changes little study period as respect to life cycles benthic macroinvertebrate persent in substrate and in compatibile indexes because of absence of fundamental studies and others factors in Iran Keywords Tajan river Bioindicators Diversity Indices Benthic Macroinvertebrate NSFWQI

عيسي ابراهيمي

مهدي نادري

نوراله ميرغفاري، اميد فرهاديان