Services Directory - GIS4OConnorLab6WTL(MapServer)

GIS4OConnorLab6WTL (Map Service)

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Current Version: 10.81

Service Description:

Lake Poyang, China's largest freshwater lake, is shrinking as upstream water is pulled from the Yangtze River at the Three Gorges Dam. Those whose livelihoods depend on the lake are alarmed, as the shrinking lake changes the land cover of the area and impacts the economy. By classifying and comparing imagery between 1984 and 2014 we can visualize and quantify the surface area changes of the lake over time to help them build a case to save the lake.

Subtracting the water area in 2014 (202309.1) from the 1984 (269654.9) classified layers shows us that the lake has shrunk by 67,345.8 hectares over this period of 30 years.

Map Name: Map

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Layers:

Tables:

Description:

Subtracting the water area in 2014 (202309.1) from the 1984 (269654.9) classified layers shows us that the lake has shrunk by 67,345.8 hectares over this period of 30 years.

Copyright Text:

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly,Tilemap

Tile Info:

Height: 256
Width: 256
DPI: 96
Levels of Detail: (# Levels: 24)

Level ID: 0 [Start Tile, End Tile]
Level ID: 1 [Start Tile, End Tile]
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Level ID: 23 [Start Tile, End Tile]

Format: Mixed
Compression Quality: 75
Origin:
Spatial Reference:
102100

Initial Extent:

Full Extent:

Min Scale: 1.8489297737236E7
Max Scale: 577790.554289

Min LOD: 5
Max LOD: 10

Units: esriMeters

Supported Image Format Types: Mixed

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info:

Title: GIS4OConnorLab6WTL
Author: oconnorm424_UCSDOnline
Comments:
Subject: Lake Poyang, China's largest freshwater lake, is shrinking as upstream water is pulled from the Yangtze River at the Three Gorges Dam. Those whose livelihoods depend on the lake are alarmed, as the shrinking lake changes the land cover of the area and impacts the economy. By classifying and comparing imagery between 1984 and 2014 we can visualize and quantify the surface area changes of the lake over time to help them build a case to save the lake. Subtracting the water area in 2014 (202309.1) from the 1984 (269654.9) classified layers shows us that the lake has shrunk by 67,345.8 hectares over this period of 30 years.
Category:
Keywords: lake poyang