Services Directory - Lake_Poyang_Land_Cover_EL

Lake_Poyang_Land_Cover_EL_WTL1 (Map Service)

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Current Version: 10.81

Service Description: The water level in Lake Poyang in China has been decreasing over the years due to the pulling of upstream water. This reduction in available water can have drastic effects not only on the plants and animals that live in the lake, but the surrounding areas due to changes in habitat type based on water availability. Through comparisons using ISO cluster tools and acre calculation, it has been determined that since 1984, the total acres the lake has covered has shrunk by more than 67,000 acres (269,653.9 acres in 1984 to 202,309.1 acres in 2014). Considering the drastic loss of land cover of the lake, it is recommended that water redirection at the Three Gorges Dam is revised. This doesn’t necessarily mean completely removed, but changed in a way that reduces downstream harm. Possibilities for changes could be reducing the amount being taken, only taking during certain times of the year, etc.

LAND COVER OF LAKE POYANG:

Lake acres 1984	Lake acres 2001	Lake acres 2014
269,654.9	248,038.5	202,309.1

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Description: The water level in Lake Poyang in China has been decreasing over the years due to the pulling of upstream water. This reduction in available water can have drastic effects not only on the plants and animals that live in the lake, but the surrounding areas due to changes in habitat type based on water availability. Through comparisons using ISO cluster tools and acre calculation, it has been determined that since 1984, the total acres the lake has covered has shrunk by more than 67,000 acres (269,653.9 acres in 1984 to 202,309.1 acres in 2014). Considering the drastic loss of land cover of the lake, it is recommended that water redirection at the Three Gorges Dam is revised. This doesn’t necessarily mean completely removed, but changed in a way that reduces downstream harm. Possibilities for changes could be reducing the amount being taken, only taking during certain times of the year, etc.

LAND COVER OF LAKE POYANG:

Lake acres 1984	Lake acres 2001	Lake acres 2014
269,654.9	248,038.5	202,309.1

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)

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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: 1155581.108577
Max Scale: 36111.909643

Min LOD: 9
Max LOD: 14

Units: esriMeters

Supported Image Format Types: Mixed

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info:

Title: Lake Poyang Land Cover_EL_WTL1
Author: elarsen19_UCSDOnline1
Comments:
Subject: Land cover in 1984 compared to 2014 of Lake Poyang
Category:
Keywords: land cover, lake, 1984, 2014