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  • 标题:Evaluation the Severity of Aquatic Environments Desertification
  • 本地全文:下载
  • 作者:Hassony J .Abdulla ; Mushtak T. Jabbar ; Noor H.Jaddo
  • 期刊名称:International Journal of Innovative Research in Science, Engineering and Technology
  • 印刷版ISSN:2347-6710
  • 电子版ISSN:2319-8753
  • 出版年度:2015
  • 卷号:4
  • 期号:12
  • 页码:11668
  • DOI:10.15680/IJIRSET.2015.0412002
  • 出版社:S&S Publications
  • 摘要:Thisinvestigationhasbeenconductedtofindcriteriasuitable to p l a c e aquatic environmentsin oneofthe desertificationclasses. Thecriteria suggested p u t t i n g the aquatic ecosystems in five degree of severity. These areslight, mo d er at e , severe, verysevere and exceptio nally or catastrophic. These depend on the main reasons which cause aquatic ecosystems deterioration as follo w: 1. Slight desertification has high plankton population , underexploited , no pollution, excellent*D.O levels , salinity values less than 0.5 ppt , PH = 7.00 and productivity reduce less than % 10 2. Moderate hasmoderate plankton population, moderately exploited , slight pollutio n, very high D.O levels ,, salinity values 0.5 -17 ppt and pH =8.069 and productivity reduce 25% 3. Severe, low plankton population, fully exploited, low pollution, high D.O levels , salinity values 16 ppt , slight decrease in pH from 8.069 and productivity reduce 50 % 4. Very severe, slight plankton population. Overexploited. moderate pollution Moderate D.O levels, salinity values 32 – 37 ppt, pH more decrease in pH 8.069 productivity reduce 75 % 5. Exceptionally or catastrophic, noplankton population , depleted , High pollution low D.O levels , salinity values more than 37 ppt ,high decrease in pH PH 8.069 and zero productivity. These criteria could be usedtoplace any aquatice c o s y s t e m ino neofthe desertificationclasses
  • 关键词:Severity degrees; Aquatic desertification;criteria;plankton population;D.O; salini zation levels;Iraq.
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