基于遥感技术的鄱阳湖-长江水体清浊倒置现象的分析

长江流域资源与环境 >> 2009, Vol. 18 >> Issue (8): 777-.

基于遥感技术的鄱阳湖-长江水体清浊倒置现象的分析

邬国锋¹| 崔丽娟²*| 纪伟涛³

1.武汉大学资源与环境科学学院&武汉大学教育部地理信息系统重点实验室| 湖北武汉 430079；
2.中国林业科学研究院林业研究所&国家林业局林木培育重点实验室| 北京 100091；
3.鄱阳湖国家级自然保护区管理局| 江西南昌 330038

出版日期:2009-08-20

AN ANALYSIS OF INVERSION OF CLEARTURBID WATER IN THE POYANG LAKE AND THE YANGTZE RIVER BASED REMOTE SENSING TECHNIQUES

WU Guofeng1| CUI Lijuan2| JI Weitao3

1.School of Resource and Environmental Science &|Key Laboratory of Geographic Information System of Ministry of Education| Wuhan University| Wuhan 430079| China； 2.Research Institute of Forestry| Chinese Academy of Forestry &|Laboratory of Tree Breeding and Cultivation| State Forestry Administration| Beijing 100091| China； 
3.Bureau of Jiangxi Poyang Lake National Nature Reserve| Nanchang 330008| China

Online:2009-08-20

摘要/Abstract

摘要：

长期以来，在鄱阳湖和长江的交汇处，江水混浊而湖水清澈，然而，近年来江水清澈而湖水混浊。这种鄱阳湖长江清浊倒置现象引起了广泛的关注，但鲜有研究人员系统分析这种现象的成因。借助中分辨率成像光谱仪（MODIS）和Landsat影像分析这种清浊倒置现象的起始时间和成因。基于MODIS影像反演的鄱阳湖和长江水体透明度显示在2004年以前鄱阳湖北部的水体透明度明显高于长江，而在2005和2006年长江水体透明度高于鄱阳湖北部，出现清浊倒置现象；同期鄱阳湖北部和长江水体透明度对比分析发现这种水体清浊倒置现象受长江水体透明度增加和鄱阳湖水体透明度下降的双重影响，但鄱阳湖北部水体透明度的变化在其中扮演主要角色；由Landsa影像识别的采（运）砂船数量及其与鄱阳湖北部水体透明度关系的分析表明，自2001年开始的鄱阳湖北部的采砂活动引起此区域水体透明度的显著下降.

关键词: 鄱阳湖/长江/水体清浊倒置/ 遥感技术

Abstract:

Water was turbid within the Yangtze River while clear within Poyang Lake at their confluence for a long time.Recently，such situation however no longer exists，and it has been replaced by clear water within the Yangtze River and turbid water within Poyang Lake.This inversion of clearturbid water in Poyang Lake and the Yangtze River has gained extensive attentions，however few researchers analyzed systemically the causes of this phenomenon.This paper，with the supporting of moderate resolution imaging spectroradiometer (MODIS) and Landsat images，analyzed the starting time and causes of inversion of clearturbid water in Poyang Lake and the Yangtze River.The water clarities derived from MODIS images within the Yangtze River and the northern Poyang Lake revealed that the water clarity of the northern Poyang Lake was higher than that of the Yangtze River before 2004，the water clarity of the Yangtze River，however，was higher than that of the northern Poyang Lake in 2005 and 2006 and the inversion of clearturbid water occurred；The comparison of synchronous water clarities of the Yangtze River and northern Poyang Lake showed that the inversion was influenced doubly by the increased water clarity of the Yangtze River and the declined one of northern Poyang Lake，in which the change of water clarity of northern Poyang Lake played one important role；The number of dredging and shipping vessels derived from Landsat images and its relation with the water clarity of northern Poyang Lake showed that the dredging activities starting in 2001 in northern Poyang Lake resulted in the prominent decline of water clarity in this region.

Key words: Poyang Lake/ the Yangtze River/ inversion of clearturbid water/ remote sense techniques

邬国锋, 崔丽娟, 纪伟涛. 基于遥感技术的鄱阳湖-长江水体清浊倒置现象的分析[J]. 长江流域资源与环境, 2009, 18(8): 777-.

WU Guo-Feng, Cui-Li-Juan, Ji-Wei-Chao. AN ANALYSIS OF INVERSION OF CLEARTURBID WATER IN THE POYANG LAKE AND THE YANGTZE RIVER BASED REMOTE SENSING TECHNIQUES[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2009, 18(8): 777-.

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