کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4426964 1309141 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use of satellite imagery to assess the trophic state of Miyun Reservoir, Beijing, China
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Use of satellite imagery to assess the trophic state of Miyun Reservoir, Beijing, China
چکیده انگلیسی

The objective of this research is to explore an appropriate way of monitoring and assessing water quality by satellite remote sensing techniques in the Miyun reservoir of Beijing, China. Two scene Thematic Mapper images in May and October of 2003 were acquired and simultaneous in situ measurements, sampling and analysis were conducted. Statistical analysis indicates that satellite-based normalized ratio vegetation index (NRVI) and in situ measured water chlorophyll a (Chl-a) concentration have very high correlation. Two linear regression models with high determination coefficients were constructed for NRVI and Chl-a of sample points. According to the modified trophic state index map, water quality in the western section of Miyun reservoir was consistently higher than in the eastern section during the two months tested. The trophic grade of the eastern reservoir remained mesotrophic with a tendency for eutrophication.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 155, Issue 1, September 2008, Pages 13–19
نویسندگان
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