koim 2009 case study urban sprawl colombia

7/31/2019 Koim 2009 Case Study Urban Sprawl Colombia

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Humboldt-Universitt

zu Berlin

15th June 2009

Urban Sprawl and land use change Case study Pereira, Colombia

Nora KoimStudent of M.Sc. Integrated Natural Resource Management

Presentation of study project


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Introduction

Urban sprawl & case of Pereira Study objective

Material and methods Study area Assessing land change

Quantitative description of forest fragmentation

Content

2Urban sprawl and land use change

Case study Pereira, Colombia

Results Land use distribution and change Fragmentation metrics

Discussion Patterns of urban growth 2002 forest fragmentation

Methodological issues Outlook: sustainable development?

Conclusion, questions and discussion


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The growth of cities will be the

single largest influence on development

in the 21st century.



United Nations Population Fund,

State of the Population Report 1996


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Introduction

Urbanization and impacts

Urban sprawl: complex pattern of land use, transportation,and social and economic development (FRUMKIN 2002)



with rise in economic power and strategic importance

Expansion of urban areas pressures on surrounding lands

Need for improved land management lack of information

Role of remote sensing and geographic information systems


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Study objective

Analyze land use changes in time and space

Compare two Landsat satellite images from different dates

Contribute to a scientific basis for a more sustainable land




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M ri l n m h




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Pereira Bogot

Study area

Pereira

La Virginia



Cartago


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Assessing land change

Two Landsat ETM+ satellite images

7th August 1989 and 14th October 2002

MultiSpec software



Supervised classification

Comparison of land cover maps


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Material and methods

Landsat image 1989 Landsat image 2002

Selection of

training areas

Supervised

classification

Supervised

classification

Preliminary land

use map 2002

Preliminary land

use map 1989

Accuracy

assessment

Accuracy

assessment

Landsat image 1989 Landsat image 2002

Selection of

training areas

Supervised

classification

Supervised

classification

Preliminary land

use map 2002

Preliminary land

use map 1989

Accuracy

assessment

Accuracy

assessment



Comparison of

land use between

1989 and 2002

Land use map 1989 Land use map 2002

Comparison of

land use between

1989 and 2002

Land use map 1989 Land use map 2002


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Quantitative description of forest fragmentation

ArcView 3.2 and 9.1 software

Generating map of forest cover 2002

Fragstats 3.3 software



Calculation of fragmentation metrics


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R l




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Results

1989 2002

Pereira

La Virginia

Pereira

La Virginia

forestbambooagriculturewaterurban areaundefined



Cartago Cartago


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Land use distribution and change




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ngein%

acreages

+ 5.2%

+ 15.2%

+ 30%

Land use distribution and change



Landusec

h

relativeto19

8

Forest Bamboo Agriculture Water Urban area

Land use classes

-17.4%

- 0.2%


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Results

1989 2002

Pereira

La Virginia

forestbambooagriculturewaterurban areaundefined

Pereira

La Virginia



Cartago Cartago


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Results

1989 2002

La Virginia La Virginia



0 1 2 km 0 1 2 km


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Results

1989 2002



Cartago Cartago0 1 2 km 0 1 2 km


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Results forestbambooagriculturewater

urban areaundefined

1989 2002




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Results2002




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Fragmentation metrics

Total forest area: 1,868 ha; 128 patches

Mean patch area: 16.12 ha 32.55

Patch area range: 1.08 ha - 207.9 ha



e an pa c area: . a

Mean shape index: 2.33 1.23

Mean interpatch distance: 185.3 m 192.4

Mean core area: 6.54 ha 17.58

Median core area: 0.32 ha


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Di i n




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Patterns of urban growth

No major change in land use on large scale

SCHNEIDER & PONTIUS (2001), BATISAN & YARNAL (2009)

Urban areas and forest are land use classes with greatest

change (positive and negative)



Growth near urban centers and infrastructure

MENON (2004), KORANTENG (2007), KUCUKMEHMETOGLU &

GEYMEN (2009)

Elevated economic power of land owners

Shift from agriculture to construction of residential areas


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Results2002




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High degree of fragmentation

Current fragmentation pattern pronounced for manydecades

Formerly agriculture, now urban use (residential areas)

Dimension of 2002 forest fragmentation



and bamboo (important natural resource) main driversof land change

Maintaining forests of least economic value for land owners

Very few undisturbed habitat (interior forest)


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Methodological issues

Time period of study

Availability of remote sensing data

Resolution of satellite image (30 x 30 m); cloud coverage



and there is always error inherent in a map. What theanalyst strives to do is reduce that error as much as

possible. (STEININGER et al. 2006)


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MCGRANAHAN & SATTERTHWAITE (2003):importance of partnerships between local governments,

community initiatives, and private sector enterprises

Willingness of governmental authority in cooperation withland owners

Outlook: Chance for sustainable development?



Conflicting interests within governmental authority

Forest expansion, connection, use for recreational purposes

Legal stimulation (tax reduction)

Participation

Raising awareness


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n l i n




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Conclusion

Detecting tendencies in Pereiras growth pattern

Urban sprawl around infrastructure and small towns In rural areas specifically investments in upper and middle

class housing areas



Highly fragmented forest cover with numerous small-sizedpatches and few large patches of irregular shape

High importance for healthy development of Pereira

Cooperation and participation


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Thank you for your attention !




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Sources

BATISANI, N. & YARNAL, B. (2009): Urban expansion in Centre County, Pennsylvania: spatial dynamicsand landscape transformations. Applied Geography 29, 235249.

FRUMKIN, H. (2002): Urban sprawl and public health. Association of Schools of Public Health, PublicHealth Reports, Vol. 117, 201-217.

KORANTENG, A. (2007): The study of the land use/cover of Kumasi and its environs using Landsatimages. Master thesis in the study programme M.Sc. Forest Information Technology, FachhochschuleEberswalde, Germany, 70 p.

KUCUKMEHMETOGLU, M. & GEYMEN, A. (2009): Urban sprawl factors in the surface water resource



. , .

MCGRANAHAN, G., SATTERTHWAITE, D. (2003): Urban centres: an assessment of sustainability.Annual Review of Environmental Resources 28, 243274.

MENON, N. (2004): Urban sprawl: a developing country approach. [e-journal] The World StudentCommunity for Sustainable Development, browsed 7 March 2009.

SCHNEIDER, L.C. & PONTIUS, R.G. (2001): Modeling land-use change in the Ipswich watershed,Massachusetts, USA. Agriculture, Ecosystems and Environment 85, 83-94.

STEININGER, M., EPTING, J., HARPER, G. (2006): Forest cover mapping and change detection usingmoderate-resolution satellite imagery (Landsat, ASTER and MODIS). Center for Applied BiodiversityScience, Conservation International, 87 p.

All tables, figures and photos in this presentation generated by Nora Koim

koim 2009 case study urban sprawl colombia

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