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LC-09 Abstract

Human and Physical Dimensions of Land Use/Cover Change in Amazonia: Forest Regeneration and Landscape Structure

Emilio Federico Moran — Indiana University (US-PI)
Dalton De Morisson Valeriano — INPE - Instituto Nacional de Pesquisas Espaciais (SA-PI)



on 25 years of research experience in the Eastern Amazon, this study will focus

on advancing our understanding of land use and land cover change. This project

will build on a seven-region study, along the LBA transects, supported for 

the past six years by NSF and NIGEC, and encompassing a sample of 100+

sites.  We used a nested-georeferenced

approach that included soil analysis, vegetation stand structure and

composition, land use histories, institutional analyses, demography of

households, and land cover classification using Landsat TM multitemporal data to

understand the rates of growth of secondary vegetation.  The seven regions’ study provides a wide array of 

land uses and land cover along an east-to-west transect extending from

the Amazon estuary and Bragantina region east of Belém near the Atlantic coast,

all the way to the Tapajos/Santarem region.  This 160,000 km2 area will be examined for land cover changes

and their relation to past patterns of land use for a minimum of no less than 25

years.  We propose in this NASA/LBA

project to extend this work by:

  1. Quantifying

    ecological thresholds driving structural and functional dynamics (e.g. rates

    of regrowth and species replacement) of secondary succession areas subjected

    to different land use histories across the seven study regions;  

  2. Generating 

    models that incorporate socioeconomic, institutional, and demographic

    determinants of land use and cover change at a variety of scales;

  3. Begin

    developing a Spectral Library of land cover classes present that can be

    applied to previous (MSS and TM5) and forthcoming sensors (TM7) through the

    integration of vegetation inventories, image calibration, and hyperspectral

    field assessment;

  4. Taking

    this opportunity to synthesize, model, and share data linking ACT’s and

    INPE’s data sets along the LBA eastern transect with the work in Rondônia

    of colleagues  at the Oak Ridge

    National Laboratory (ORNL).  We

    foresee close collaboration with them on modeling land use and land cover,

    spatial analysis metrics, environmental analysis, and a participatory model;


  5. Providing

    hands-on experience to a cohort of Brazilian doctoral students in their work

    on land use/cover change and the human dimensions of such change in research

    in the Amazon region, and to provide other opportunities for mid-career

    training  preferentially to

    colleagues at Amazonian institutions.



study will begin to develop a Spectral Library to facilitate inter-image

comparisons of land cover classes and land use dynamics at the center of the LBA

campaign.   Building this

Spectral Library is a challenge that we can undertake only because of the

comprehensive nature of past georeferenced field research encompassing physical,

biological and social science variables, and because of its spatial distribution

over seven different regions that permits scaling from farm/household to

regional dimensions of land use and land cover.                  


July 2, 2001

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