LAND USE AND LAND COVER CHANGE IN AMAZONIA FRONTIER, JI-PARANÁ BASIN – RONDÔNIA
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Laís de Carvalho Hanada a ; Maria Victória Ramos Ballester a ; Reynaldo Luiz Victória a & Jeffrey Edward Richey b a Centro de Energia Nuclear na Agricultura/ USP (CENA/USP) ([email protected] ) ; b School of Oceanography-University of Washington, USA A massive land use change has occurred in the Amazon basin in the last 3 decades, resulting from a complex product of economic and social factors, infrastructure development, soil characteristics and cultural factors that are reflected in the deforestation process. The Ji-Paraná basin is located in the State of Rondônia and comprises an area of 75,400 km 2 , encompassing 31% of the State. Most of the colonization projects accurred here. Today, more than 60% of the state population lives in the Ji-Paraná basin. LAND USE AND LAND COVER CHANGE IN AMAZONIA FRONTIER, JI-PARANÁ BASIN – RONDÔNIA Objects Study area Methods Results Conclusions Introduction Our results show that the basin lost 20% (15,313 km 2 ) of the original forest cover (without savanna class) in 15 years. In 2001 the forest class represented 41,100 km 2 (55%) of the basin area. The results also indicate that regrowth areas are reuse, mainly in 1996 to 2001 period. The main objective of this study is to better understand the land use and cover changes in Ji-Paraná basin in the last 15 years and to analyze some drives of tropical deforestation like soil fertility, roads distance and settlements. The larger forest patches are located in flat, poor fertile (base saturation lower than 50%) and scarce road area, corresponding to 17.563 km 2 (23,30%), where 5056 km 2 (6,7%) are located in conservation units. The forest patches on rich soils are located at the central part of Ji-Paraná basin (5,500 km 2 ) and in areas with scarce roads and near conservation units (6550 km 2 ). Agricultural areas comprise only 732 km 2 (1%) located in distrofic soil with scarce roads and 1481 km 2 (2%) in distroc soil and near the main roads. / 200 0 200 100 Kilom eters R ondonia State M osaic:Landsat-7/ETM + Legend Ji-Parana basin 1º STAGE 2º STAGE The overall accuracy of the six classes was 86,34% with a kappa of 0,73. Accuracy Assessment Reference points GPS Scenes Data Acquisition 1986, 1992, 1996 e 2001 Thematic Maps Topografic maps IBGE Landsat-7/ETM+ Scenes (1999) 8 Scenes Geometric Rectification Geometric Rectification Mosaics Scenes Digital Classification Supervised Classification (Maxver) Mask: 3x3 window Landsat-7/ETM+ Scenes (1999) Registration Scenes (1986, 1992, 1996 e 2001) Classified Landsat-7 e Landsat-5 Scenes (1986,1992,1996 e 2001) 1986 1992 1996 2001 Landsat-7 e Landsat-5 Images (1986,1992,1996 e 2001) Registration Software: ERDAS_IMAGINE 8.5 SIGTERON Data Land Use and Cover Change (2001) 1- Forest; 2- Agricultural area; 3- Savana; 4- Urban area; 5- Regrowth Cross Tabulation Geostatistical Analyst Arc-GIS 8.1 BASE SATURATION MAP Fertility soil x Road distance 1- 1/1 2- 1/2 3- 2/1 4- 2/2 Fertility soil x Road distance x Land Use change - 2001 1- 1/1 2- 1/2 3- 1/3 4- 1/4 5- 1/5 6- 2/1 other Reclassification BASE SATURATION MAP 1- Distrofic soils (V% < 50%) 2- Eutrofic soils (V% > 50%) ROADS MAP (BUFFER - 15 km around main roads) 1- untill 15 km to main roads 2- far away to main roads Cross Tabulation Multiple Regression: Distance to the main road and Soil fertility are signifivative influences to deforestation processes in all data studied (p<0,0002) and (p<0,8 10 -20 ), respectively (Software: STATISTICA) The Amazon basin has a big extension, almost 7 million km 2 . It has distinct land characteristics (soil quality, topography), economic, social. Examination of land and cover changes leads to a more comprehensive understanding of ecological processes and can be used in land use planning. Our results show how the influence of soil fertility and road distance can be used to explain the deforestation process in Ji-Paraná basin. Support: C olorcom posite 5 4 3
description
LC_39.9. Geostatistical Analyst Arc-GIS 8.1. BASE SATURATION MAP. SIGTERON Data. Reclassification. BASE SATURATION MAP 1- Distrofic soils (V% < 50%) 2- Eutrofic soils (V% > 50%). Fertility soil x Road distance 1- 1/1 2- 1/2 3- 2/1 4- 2/2. - PowerPoint PPT Presentation
Transcript of LAND USE AND LAND COVER CHANGE IN AMAZONIA FRONTIER, JI-PARANÁ BASIN – RONDÔNIA
Laís de Carvalho Hanadaa; Maria Victória Ramos Ballestera; Reynaldo Luiz Victóriaa & Jeffrey Edward Richeyb
a Centro de Energia Nuclear na Agricultura/ USP (CENA/USP) ([email protected]); b School of Oceanography-University of Washington, USA
A massive land use change has occurred in the Amazon basin in the last 3 decades, resulting from a complex product of economic and social factors, infrastructure development,
soil characteristics and cultural factors that are reflected in the deforestation process. The Ji-Paraná basin is located in the State of Rondônia and comprises an area of 75,400
km2, encompassing 31% of the State. Most of the colonization projects accurred here. Today, more than 60% of the state population lives in the Ji-Paraná basin.
LAND USE AND LAND COVER CHANGE IN AMAZONIA FRONTIER, JI-PARANÁ BASIN – RONDÔNIA
Objects
Study area
Methods
Results
Conclusions
Introduction
Our results show that the basin lost 20% (15,313 km2) of the original forest cover
(without savanna class) in 15 years. In 2001 the forest class represented 41,100 km2
(55%) of the basin area. The results also indicate that regrowth areas are reuse,
mainly in 1996 to 2001 period.
The main objective of this study is to better understand the land use and cover
changes in Ji-Paraná basin in the last 15 years and to analyze some drives of
tropical deforestation like soil fertility, roads distance and settlements.
The larger forest patches are located in flat, poor fertile (base saturation lower than
50%) and scarce road area, corresponding to 17.563 km2 (23,30%), where 5056 km2
(6,7%) are located in conservation units. The forest patches on rich soils are located
at the central part of Ji-Paraná basin (5,500 km2) and in areas with scarce roads and
near conservation units (6550 km2).
Agricultural areas comprise only 732 km2 (1%) located in distrofic soil with scarce
roads and 1481 km2 (2%) in distroc soil and near the main roads.
/
200 0 200100 Kilometers
Rondonia StateMosaic: Landsat - 7/ ETM+
Legend
Ji-Parana basin
1º STAGE
2º STAGE
The overall accuracy of the six classes
was 86,34% with a kappa of 0,73.
Accuracy Assessmen
t
Accuracy Assessmen
t
Reference points
GPS
Reference points
GPS
Scenes Data Acquisition
1986, 1992, 1996 e 2001 Scenes Data Acquisition
1986, 1992, 1996 e 2001
Thematic
MapsThematic
Maps
Topografic maps
IBGETopografic maps
IBGE
Landsat-7/ETM+ Scenes (1999)
8 Scenes
Landsat-7/ETM+ Scenes (1999)
8 Scenes
Geometric RectificationGeometric Rectification
Geometric Rectification
Geometric Rectification
Mosaics ScenesMosaics Scenes
Digital Classification
Supervised Classification (Maxver)Digital Classification
Supervised Classification (Maxver)
Mask: 3x3 windowMask: 3x3 window
Landsat-7/ETM+ Scenes (1999)
Registration
Landsat-7/ETM+ Scenes (1999)
Registration
Scenes (1986, 1992, 1996 e 2001)
Classified
Scenes (1986, 1992, 1996 e 2001)
Classified
Landsat-7 e Landsat-5
Scenes
(1986,1992,1996 e 2001)
Landsat-7 e Landsat-5
Scenes
(1986,1992,1996 e 2001)
19861986199219921996199620012001
Landsat-7 e Landsat-5
Images
(1986,1992,1996 e 2001)
Registration
Landsat-7 e Landsat-5
Images
(1986,1992,1996 e 2001)
Registration
Software: ERDAS_IMAGINE 8.5Software: ERDAS_IMAGINE 8.5
SIGTERON DataSIGTERON Data
Land Use and Cover Change (2001)
1- Forest; 2- Agricultural area; 3- Savana; 4- Urban
area; 5- Regrowth
Land Use and Cover Change (2001)
1- Forest; 2- Agricultural area; 3- Savana; 4- Urban
area; 5- Regrowth
Cross TabulationCross Tabulation
Geostatistical Analyst
Arc-GIS 8.1Geostatistical Analyst
Arc-GIS 8.1
BASE SATURATION
MAPBASE SATURATION
MAP
Fertility soil x Road
distance
1- 1/1
2- 1/2
3- 2/1
4- 2/2
Fertility soil x Road
distance
1- 1/1
2- 1/2
3- 2/1
4- 2/2
Fertility soil x
Road distance x
Land Use change -
2001
1- 1/1
2- 1/2
3- 1/3
4- 1/4
5- 1/5
6- 2/1
other
Fertility soil x
Road distance x
Land Use change -
2001
1- 1/1
2- 1/2
3- 1/3
4- 1/4
5- 1/5
6- 2/1
other
ReclassificationReclassification
BASE SATURATION MAP
1- Distrofic soils (V% < 50%)
2- Eutrofic soils (V% > 50%)
BASE SATURATION MAP
1- Distrofic soils (V% < 50%)
2- Eutrofic soils (V% > 50%)
ROADS MAP
(BUFFER - 15 km around main roads)
1- untill 15 km to main roads
2- far away to main roads
ROADS MAP
(BUFFER - 15 km around main roads)
1- untill 15 km to main roads
2- far away to main roads
Cross TabulationCross Tabulation
Multiple Regression: Distance to the main road and Soil fertility are signifivative
influences to deforestation processes in all data studied (p<0,0002) and (p<0,8 10-20),
respectively (Software: STATISTICA)
The Amazon basin has a big extension, almost 7 million km2. It has distinct land
characteristics (soil quality, topography), economic, social. Examination of land and
cover changes leads to a more comprehensive understanding of ecological
processes and can be used in land use planning. Our results show how the
influence of soil fertility and road distance can be used to explain the deforestation
process in Ji-Paraná basin.
Support:
Color composite
5 4 3
