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2009•Journal of Jilin UniversityRequires access

Study on Dynamic Change of Wetland in Sanjiang Plain,Northeast Area

Yuanhua Li

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Abstract

The authors study on the wetland's change of Sanjiang Plain in the past 20 years,with the TM,ETM and CBERS data,analyzing and quantifying the present distribution and spatial-temporal dynamic variety by RS and GIS technology.The results show that the wetland is now mainly distri-buted in the counties of Tongjiang,Fuyuan,Fujin,Hulin and etc.,the varieties of lake and river are almost stable.During the study period,the mire area reduced 5 356.69 km2 greatly and the constructed wetland increased 11 597.68 km2.The results also indicate that the natural wetland landscape's fragmentation is enhanced and the constructed wetland is connecting together gradually affected by human activity.

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What this paper is about

The authors study on the wetland's change of Sanjiang Plain in the past 20 years,with the TM,ETM and CBERS data,analyzing and quantifying the present distribution and spatial-temporal dynamic variety by RS and GIS technology.The results show that the wetland is now mainly distri-buted in the counties of Tongjiang,Fuyuan,Fujin,Hulin and etc.,the varieties of lake and river are almost stable.During the study period,the mire area reduced 5 356.69 km2 greatly and the constructed wetland increased 11 597.68 km2.The results also indicate that the natural wetland landscape's fragmentation is enhanced and the constructed wetland is connecting together gradually affected by human activity.

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Available abstract

The authors study on the wetland's change of Sanjiang Plain in the past 20 years,with the TM,ETM and CBERS data,analyzing and quantifying the present distribution and spatial-temporal dynamic variety by RS and GIS technology.The results show that the wetland is now mainly distri-buted in the counties of Tongjiang,Fuyuan,Fujin,Hulin and etc.,the varieties of lake and river are almost stable.During the study period,the mire area reduced 5 356.69 km2 greatly and the constructed wetland increased 11 597.68 km2.The results also indicate that the natural wetland landscape's fragmentation is enhanced and the constructed wetland is connecting together gradually affected by human activity.

Key concepts: Sanjiang Plain, Wetland, Mire, Fragmentation (computing), Environmental science, Wetland conservation, Physical geography, Landscape ecology

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