NDLI: Changes of Hongze Lake Wetlands in the past Three Decades

Content Provider	IEEE Xplore Digital Library
Author	Renzong Ruan Li Zhang
Copyright Year	2010
Abstract	The main purpose of this paper was to assess the change of wetlands in Hongze Lake over the past three decades. The raw data comprised two digital images acquired in 1979 and 2006 respectively. The task proceeded in three parts. First, following preprocessing and registration of 2006 imagery to the topography at the scale of 1:50,000, the TM image of 2006 was segmented and classified by using object-oriented classification technique. A thematic feature space image of near-infrared versus red was created based on the 2006 classification results and the location of each class and its relations with other classes in scatter plot and in geographical space were analyzed. Second, the 1979 Landsat MSS imagery was registered to 2006 georeferenced TM. The geometrically corrected MSS image was segmented and classified under the aid of the feature and geographical space analysis. Third, according to field investigation, specific change detection scheme was mad and the main change types of wetlands in Hongze Lake were extracted for further analysis. The results showed that a great loss of wetland has occurred in the study area in the past nearly 30 years. 58.31% of natural wetlands have been reclaimed for aquaculture, mainly fish ponds and fishing network waters. 32.14% of submerged aquatic vegetation has been replaced by open due to the change of water environment.
Starting Page	1
Ending Page	4
File Size	1104978
Page Count	4
File Format	PDF
ISBN	9781424437085
DOI	10.1109/WICOM.2010.5601034
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vegetation mapping Lakes Rivers Marine animals Remote sensing Water resources Aquaculture
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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