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مقاله Biomagnetic monitoring of particulate matter in urban environments با word دارای 4 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد مقاله Biomagnetic monitoring of particulate matter in urban environments با word کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه و مراکز دولتی می باشد.

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توجه : در صورت  مشاهده  بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی مقاله Biomagnetic monitoring of particulate matter in urban environments با word،به هیچ وجه بهم ریختگی وجود ندارد

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بخشی از متن مقاله Biomagnetic monitoring of particulate matter in urban environments با word :

سال انتشار: 1391
محل انتشار: اولین همایش بین المللی بحران های زیست محیطی ایران و راهکارهای بهبود آن
تعداد صفحات: 4
چکیده:

Many urban Environments are continuously exposed to high concentration of particulate pollutants. Leaf saturation isothermal remanent magnetisation (SIRM) is known as a good proxy of atmospheric particulate matter (PM) concentration. This study assessed leaf SIRM of tree species with different leaf surface characteristics at high spatial resolution. First, leaf SIRM of co-located species was compared. Second, leaf SIRM was assessed between contrasting land use classes. Third, the spatial variability of leaf SIRM was explained by tree species, sampling height, distance to the nearest road and its traffic intensity and tram frequency. The results showed that the highest SIRM values were observed for species with ridged leaf surface (i.e. C. betulus) and hairy leaf (hairy Tilia sp.), and the lowest for the non-hairy Tilia sp. leaves. We found that the leaf SIRM was significantly influenced by tree species, distance to the nearest road and its traffic intensity and tram frequency. The SIRM significantly increased with increasing traffic intensity and tram frequency and by decreasing distance to the nearest road. It was concluded that leaf SIRM depends on leaf surface structure and particulate pollution level and is a good bio-indicator for monitoring spatial variation of magnetic particles in urban environments

 

 

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