Service Description: Lake Poyang is China's largest freshwater lake. Overtime the lake has been shrinking because upstream water is being pulled from the Yangtze River and the Three Gorges Dam. Those who's livelihoods depend on this body of fresh water need to prove that the lake is shrinking in order to save it. To calculate the lake's change over time, I took Landsat satellite images of Lake Poyang from 1984, 2001, and 2014. I took those images and used the iso cluster unsupervised classification tool. Then I cleaned up the images with the majority filter and boundary clean tools. Then I added a hectare field to their attribute tables and used calculate fields to figure out how many hectares the lake has lost over time. Based on my findings, Lake Poyang has lost several hectares of land over a thirty year period.
Service ItemId: 1ebacea351864e14be336e4ddf6197ef
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
All Layers and Tables
Layers:
Description:
Copyright Text:
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 115700 (115700)
Initial Extent:
XMin: 12877788.2660306
YMin: 3359967.08813714
XMax: 13031714.9970333
YMax: 3469436.71981297
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 115700 (115700)
Full Extent:
XMin: 10081768.8664189
YMin: 2845492.27832135
XMax: 13333569.0377091
YMax: 4478446.08417024
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 115700 (115700)
Units: esriMeters
Child Resources:
Info
SharedTemplates
Supported Operations:
Query
ConvertFormat
Get Estimates