水资源与水工程学报

文章摘要

张鸿键，杨波，李德平，邬丹，廖丹霞，李景保.基于MODIS影像的洞庭湖枯水期总磷营养状况监测研究Journal of Water Resources and Water Engineering[J].,2014,25(3):62-67

基于MODIS影像的洞庭湖枯水期总磷营养状况监测研究

Research on monitoring total phosphorus nutritional status of Dongting lake based on MODIS image

DOI：10.11705/j.issn.1672-643X.2014.03.013

英文关键词: water pollution total phosphorus (TP) eutrophication MODIS Dongting lake

基金项目:国家自然科学基金面上项目（41171342）；中欧科技合作的“龙计划”三期项目（ID 10697）；省高校创新平台开放基金项目（10K042）；杭州师范大学“遥感与地球科学创新平台”开放基金（PDKF2010YG08）；地理学湖南省重点学科项目(2012001)

Author Name	Affiliation
ZHANG Hongjian, YANG Bo, LI Deping, WU Dan, LIAO Danxia, LI Jingbao	（湖南师范大学 GIS研究中心，湖南长沙 410081）

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中文摘要:

为了解洞庭湖区枯水期的水体总磷的污染情况，利用MODIS反射率与同步的总磷（TP）浓度实测数据进行相关性分析，得出最优波段组合b₁-b₅。建立了三次多项式反演模型,并运用模型反演得到2005、2009及2013年枯水期3期洞庭湖区总磷的分布图，湖区水体主要以Ⅳ类水质和Ⅴ类水质为主，进一步采用以TP为基准的修正营养指数(TSIM)公式得出洞庭湖区的营养状态分布情况。结果表明：2005-2013年洞庭湖水体营养指数呈现略下降又上升的趋势。洞庭湖区湖水趋于富营养化状态，且东洞庭湖最严重，南洞庭湖次之，西洞庭湖最轻，洞庭湖湖体水质劣于入湖口水质。

英文摘要:

In order to understand the status of TP pollution of water body in Dongting Lake in dry season,the paper used the (MODIS) data and measured TP data to conducted correlation analysis. The research indicated that the best band combination is b₁-b₅. The paper set up a cubic polynomial model for retrieval of TP concentration. Furthermore, It obtained TP concentration map at Dongting lake area in 2005, 2009 and 2013 by use of model retrieval. Results showed that TP concentration in most area of Dongting Lake belong to class Ⅳ and class Ⅴ. Finally, the trophic state index model (TSIM) was used to make eutrophication map of Dongting lake. Results suggest that the nutritional status of Dongting lake tends to eutrophication. The trophic index of water body in Dongting Lake dropped slightly and then rose from 2005 to 2013. The most serious area of eutrophication is the east of Dongting Lake, then the south of Dongting Lake, the west of Dongting Lake is relatively the best one. The water quality in inner lake are inferior to that near the outlets of four tributaries.

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