THE ESTIMATION OF BIOCHEMICAL OXYGEN DEMAND<br />
AFTER FIVE DAYS BASED ON TM IMAGE DATA

doi:10.6046/gtzyyg.2009.02.17

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Abstract

: Water pollution in the lake always occurs along with eutrophication. Strong correlation has been found

between such water quality parameters as chlorophyll-a, SD, TP, TN, COD and BOD5 in the water body. TP and TN

directly control the growth and propagation of phytoplankton, and theoretically speaking, TP and TN affect

chlorophyll-a and SD indirectly, whereas chlorophyll-a and SD are primary parameters that can influence spectral

reflectance characteristics. Previous research results indicate that retrieval models of TP and TN can be developed

directly using remote sensing data because of their strong correlation with chlorophyll-a and SD. Based on this

technical idea, the authors derived the BOD5 retrieval model in the Hongze Lake using TM images according to its

strong correlation with TP and TN. The result demonstrates that the model is simple and feasible. This study proves

to be a successful experiment in the construction of the retrieval model of water quality parameters.

Keywords GIS RS NDVI System analyse

:
	TP 79

Issue Date: 12 June 2009

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Cite this article:

SUN Qiang-Xian, LI Mao-Tang, LU Jing-Xua. THE ESTIMATION OF BIOCHEMICAL OXYGEN DEMAND
AFTER FIVE DAYS BASED ON TM IMAGE DATA[J]. REMOTE SENSING FOR LAND & RESOURCES,2009, 21(2): 82-86.

URL:

https://www.gtzyyg.com/EN/10.6046/gtzyyg.2009.02.17 OR https://www.gtzyyg.com/EN/Y2009/V21/I2/82

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