Landscapes Change Detection in the Qinling Mountains, China

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Landscapes Change Detection in the Qinling
Mountains, China
ECL 290 Fall 2004Kaoru Dobeta
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Objectives of the Study

• To detect Land Use/Cover (LUC) and NDVI changes
  in giant panda nature reserves
• To quantify human impacts on wildlife habitats

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Something about Giant Pandas..

• Live in temperate-zone bamboo forests
• At an altitude of between 1,200 and 3,500 m
• Found only in central China

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Something about Giant Pandas..2

• 160 to 190 cm
• About 70 100 kg
• Diet bamboo (gt90)
• Endangered About 1,600 giant pandas in wild 120
  in Chinese breeding facilities 20 live in zoos
  outside China

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Study Area

• The southern slope of the middle Qinling
  Mountains in Shannxi Province.
• Three giant panda reserves are included
  Changqing,Foping and Guanyingshan.
• The total area 709 sq/km
• The elevation 800m 3071m
• Annual precipitation 813 mm

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Data used in the study

• Vector data boundaries of the study area and
  nature reserves rivers sample points
• Raster data DEM slope model aspect model
• Landsat TM acquired on Sep. 15 1988 and Sep. 8
  1997
• Spatial resolution 30 x 30 m
• Geo-referenced

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Research Methods of the Study

• Mapping LUC
• Detecting Quantifying the LUC change
• Measuring NVDI

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Mapping LUC
Method 1

• 8 LUC were defined (1) conifer forest, (2)
  mixed conifer, (3) deciduous broadleaf forest,
  (4) bamboo, (5) shrub-grass land, (6) farmland
  settlement, (7) bare-land and rock, (8) water

• Data used are TM1,TM2,TM3,TM4,TM5,TM7, DEM and
  aspect model
• The stratified random sampling method and the
  traditional maximum likelihood classification

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Mapping LUC 2
Method 2
The total samples 1587 points for 1997-image
1848 point for 1988-image
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LUC Patten
Result 1
a. Sep. 15, 1988 b. Sep. 8, 1997
CAS Cloud Shadows, CF Conifer Forest,CFDBF
Mixed Conifer Broadleaf Forest,DBF Deciduous
Broadleaf Forest,SHGR Shrub-Grass Land, BAM
Bamboo, FAS Farmland Settlement,RAB Rock
and Bare-land, WAR Water.
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LUC Change Map Quantification
Result 2
CAS Cloud Shadows, CF Conifer Forest,CFDBF
Mixed Conifer Broadleaf Forest,DBF Deciduous
Broadleaf Forest,SHGR Shrub-Grass Land, BAM
Bamboo, FAS Farmland Settlement,RAB Rock
and Bare-land, WAR Water.
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NDVI Patterns Quantification
Result 3
a. Sep. 15, 1988 b. Sep. 8, 1997
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NDVI Curves
Result 4
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NDVI Curves 2
Result 5
1988
1997
a.
b.
c.
d.
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Conclusion

• The changes mostly happened near or along river
  valleys and at the southern boundaries where
  local people are living.
• The NDVI spatial calculation is a good approach
  to detect not only change in LUC types but also
  change of quality in same LUC area.

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References Liu, J. and Ouyang, Z. et al. 1999.
A framework for evaluating the effects of human
factors on wildlife habitat the case of giant
pandas. Conservation Biology. December. 13(6).
pp. 1360-1370. Liu, X., and Jin, Q. et al.
Landscapes Change Detection in the Southern
Slope of the Qinling Mountains, China.
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