computational support for the scale concept the terrame framework for integrated lucc modeling
Download
Skip this Video
Download Presentation
Computational Support for the Scale Concept: The TerraME Framework for Integrated LUCC Modeling

Loading in 2 Seconds...

play fullscreen
1 / 69

Computational Support for the Scale Concept: The TerraME Framework for Integrated LUCC Modeling - PowerPoint PPT Presentation


  • 350 Views
  • Uploaded on

Computational Support for the Scale Concept: The TerraME Framework for Integrated LUCC Modeling. Authors: Tiago Garcia de Senna Carneiro Dr. Antônio Miguel Vieira Monteiro Dr. Gilberto Câmara IAI-CPTEC Training Institute on Climate, Land Use and Modeling

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Computational Support for the Scale Concept: The TerraME Framework for Integrated LUCC Modeling' - LionelDale


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
computational support for the scale concept the terrame framework for integrated lucc modeling

Computational Support for the Scale Concept: The TerraME Framework for Integrated LUCC Modeling

Authors: Tiago Garcia de Senna Carneiro

Dr. Antônio Miguel Vieira Monteiro

Dr. Gilberto Câmara

IAI-CPTEC Training Institute on Climate, Land Use and Modeling

August 13-18, 2006, Cachoeira Paulista, CPTEC, Brazil

the problem multiscale spatial dynamic modeling
Deforestation Map – 2000

(INPE/PRODES Project)

Deforestation

Forest

Non-forest

The problem: multiscale spatial dynamic modeling

Provide computational modeling support for GEOMA research areas:

  • Environmental Physics
  • Wetlands
  • Biodiversity
  • LUCC
  • Population Dynamics
  • Climate

GEOMA network Science and Technology Ministry institutions:

  • LNCC-Laboratório Nacional de Computação Científica
  • MPEG-Museu Paraense Emílio Goeldi
  • INPE-Intituto de Pesquisas Espaciais
  • IDSM-Instituto de Desenvolvimento Sustentável Mamirauá
  • IMPA-Instituto de Matemática Pura e Aplicada
  • CBPF-Centro Brasileiro de Pesquisas Físicas
slide3
Main requirement: represent and simulate Amazon region space-time diversity of:
  • Actors
  • Processes
  • Speedy of change
  • Connectivity relations

Matogrosso State

Rondônia State

Mato Grosso State

realistic environmental change studies requires multiple scale models
Realistic environmental change studies requires multiple scale models

(Source: Turner II, 2000)

simulate physical processes

Simulate Physical Processes

- rain drainage in a terrain -

slide8
Espinhaço Range

O Brasil “from the space”2000

slide12
Lobo’s Range

Itacolomido Itambé Peak

slide13
Lobo’s Range

Itacolomido Itambé Peak

9 km

9 km

slide14
rain

rain

rain

Itacolomi do Itambé

Peak

Lobo’s Range

N

slide15
Picture direction

Itacolomido Itambé Peak

Lobo’s Range

slide17
Simulation

Result

(36 min.)

research goal
Research Goal
  • To define the mathematical foundation of a model of computation for multiplescaleLUCC modeling, the Nested Cellular Automata (Nested-CA) model.
  • To implement the Nested-CA model of computation in a software architecture that provides support for all phases of the development of a multiple scale spatial dynamic model, the TerraME - Terralib Modeling Environment.
cyclical model development process
Cyclical Model Development Process

TerraME provides support for all phases of the development of a multiple LUCC model.

terrame architecture applications
TerraLib EnviromentalModeling Framework

C++ Signal Processing librarys

C++ Mathematicallibrarys

C++ Statisticallibrarys

TerraME architecture & applications

RondôniaModel

DinamicaModel

TROLLModel

CLUEModel

TerraME Language

TerraME Compiler

TerraME Virtual Machine

TerraLib

content
Content
  • The state of the art on models of computation for LUCC modeling
  • The Nested-CA model of computation
  • The TerraME modeling environment
  • LUCC applications
    • A data-driven model for the Brazilian Amazon Region (CLUE model)
    • A theory driven model for the Rondônia state center-north region, Brazil.
  • Why use TerraME
  • Conclusion
state of the art on models of computation for lucc modeling
State of the Art on Models of Computation for LUCC Modeling

(von Neumann, 1966)

(Minsky, 1967)

(Pedrosa et al, 2003)

(Aguiar et al, 2004)

(Wooldbridge, 1995)

(Straatman et al, 2001)

(Rosenschein and Kaelbling, 1995)

Cellular automata models

Agent based models

terrame idea a earth s environment
TerraME IdeaA Earth’s environment …

can be represented as a synthetic environment…

… where analytical entities (rules) change the space properties in time.

Several interacting entities share the same spatiotemporal structure.

slide25
Nested-CA Model of Computation

Space function is non-homogeneous

a scale model

A Scale Model

- basic concepts -

the scale concept
The Scale Concept

Scale is a generic concept that includes the spatial, temporal, or analytical dimensions used to measure any phenomenon.

Extent refers to the magnitude of measurement.

Resolution refers to the granularity used in the measures.

(Gibson et al. 2000)

terrame spatial model

TerraME Spatial Model

Proximal spaces

Actions at distance

Non-stationary neighborhoods

terralib cellular space
Cellular Spaces
  • Components
    • Grid of georeferenced cells:
      • Unique ID
      • Several attributes
      • Generalized proximity matrix(GPM)
TerraLib Cellular Space

A discrete surface of squared cells. Each cell has one ID and several attributes.

the terrame spatial model
GISThe TerraME spatial model

The space local properties, constraints, and connectivity can be modeled by:

Each cell has a neighborhood that can be, possibly, different.

- Space is nether isomorphic nor structurally homogeneous.(Couclelis 1997)

- Actions at a distance are considered.(Takeyana 1997), (O’Sullivan 1999)

- a spatial structure: a lattice of cells

- a set of geographic data: each cell has various attributes

loading data
GISLoading Data

-- Loads the TerraLib cellular space

csCabecaDeBoi = CellularSpace

{

dbType = "ADO",

host = "amazonas",

database = "c:\\cabecaDeBoi.mdb",

user = "",

password = "",

layer = "cellsSerraDoLobo90x90",

theme = "cells",

select = { "altimetria", “soilWater", “infCap" }

}

csCabecaDeBoi:load();

csCabecaDeBoi:loadNeighbourhood(“Moore_SerraDoLobo1985");

terrame behavioral model

TerraME Behavioral Model

Discrete and continuous

Knowledge based

Sequential and Parallel

Process Trajectory

rain automaton
Rain Automaton

Raining

cell.soilWater = cell.past.soilWater +2;

Global

rain automaton in terrame
Rain Automaton in TerraME

agRain = GlobalAutomaton{

it = SpatialIterator{ csCabecaDeBoi, function( cell ) return (cell.altimetria >= 1500); end

},

ControlMode{

id = "working",

Flow{

function(event, agent, cell)

cell.soilWater = cell.past.soilWater + 2;

return 0;

end

}

}

}

hidrologic balance automaton
(soilWater > infCap) ?

WET

DRY

(soilWater <= infCap) ?

Hidrologic Balance Automaton

Local

overflow = (soilWater – infCap);

soilWater = infCap;

sendToNeighbour( overflow );

terrame temporal model

TerraME Temporal Model

Asynchronous Processes

Multiple Temporal Resolutions

the terrame timer
1. Get first pair 2. Execute the ACTION

1.

Execute an agent over the cellular space regions

2.

3. Timer =EVENT

Save the spatial data

3.

Draw cellular spaces and agents states

1:32:10

1:32:00

1:42:00

1:38:07

Mens. 3

Mens. 1

Mens. 2

Mens.4

4.

Carrie out the comunication between agents

return value

. . .

true

4. timeToHappen += period

The TerraME Timer
neighborhood based rules time
Temporal inconsistency

OK

OK

2º step

1º step

update

Neighborhood based rules & Time

Rule:

if ( all neighbors = 1 ) then 0

General rule form:

cell.soilWater= cell.soilWater + 2;

one copy of the

cellular space

past

present

runtime rule activity
tn

tn+1

Runtime Rule Activity

rule

count = 0 ;

for i, cell ipairs( csValeDoAnary ) do

end

if ( cell.past.cover == “forest”) then

cell.cover =“deforested”;

count = count + 1 ;

end

cell.synchronize( );

?

print(“Number of deforested cells: ”.. count);

multiple scales

Multiple scales

Basic concepts

multiple scale approach
Multiple Scale Approach

Cellular Spaces

Discrete-Event Schedulers

GlobalAutomata

LocalAutomata

space structure is non homogeneous
Space structure is non-homogeneous

Nested scales

Multiscale models can be developed

Diverse space partitions can have different scales

simulate human environment interactions

Simulate Human-Environment Interactions

- Land use and Land Cover Changes -

the clue model in terrame

The CLUE model in TerraME

INPE & Wageningen University

A data-driven LUCC model

spatially explicit lucc models have a common structure
1980

1990

GIS

t+1

load

2000

When?

Where?

t ≥ tf

How?

CLUE

Model

Spatially explicit LUCC models have a common structure

How much?

idle

play

deforestation pattern in 1997 inpe prodes 1997 data combined with ibge agricultural census 1996
Deforestation pattern in 1997INPE/PRODES 1997 data combined with IBGE/Agricultural census 1996

Brazilian Legal Amazon

Federative States

Roads

Source: Ana Paula D. de Aguiar

0% ->

100%deforested

applying clue model to brazilian amazon
Applying CLUE model to Brazilian Amazon

Legal Amazon level

demand module

scenarios of quantity of

changes in

land use types

grid-based level

spatial analysis

allocation module

‘coarse scale’

multiple regression

models

‘coarse scale’

allocation

100 x 100 km2

cells

‘fine scale’

multiple regression

models

‘fine scale’

allocation

25 x 25 km2

cells

Source: Ana Paula D. de Aguiar

introduction rond nia modeling exercise study a rea
Deforestation Map – 2000

(INPE/PRODES Project)

Deforestation

Forest

Non-forest

Introduction: Rondônia modeling exercise study area

Federal Government induced colonization area (since the 70s):

  • Small, medium and large farms.
  • Mosaic of land use patterns.
  • Definition of land units and typology of actors based on multi-temporal images (85-00) and colonization projects information (Escada, 2003).
  • Intersects 10 municipalities (~100x200 km).
actors and patterns
Model hypothesis:
  • Occupation processes are different for Small and Medium/Large farms.
  • Rate of change is not distributed uniformly in space and time:rate in each land unit is influenced by settlement age and parcel size; for small farms, rate of change in the first years is also influenced by installation credit received.
  • Location of change: For small farms, deforestation has a concentrated pattern that spreads along roads. For large farmers, the pattern is not so clear.

62o 30’ W

62o W

9o S

9o S

9o 30’ S

9o 30’ S

10o S

10o S

10o 30’ S

10o 30’ S

Large farms

50

0

Medium farms

62o 30’ W

62o W

Km

Urban areas

Small farms

Reserves

Actors and patterns
model overview
Deforestation Rate Distribution from 1985 to 2000 - Land Units Level:
  • Large/Medium Rate Distribution sub-model
  • Small Farms Distribution sub-model

Allocation of changes - Cellular space level:

  • Large/Medium allocation sub-model
  • Small allocation sub-model

Global study

area rate

in time

Land unit 1 rate t

Land unit 2 rate t

2.500 m (large

and

medium)

500 m (small)

Large farms

Medium farms

Urban areas

Small farms

Reserves

Model overview
model implementation in terrame
Legend

Environment

Agent

Asmall

Rsmall

+

+

...

...

+

Rlarge

+

Alarge

Land Unit1

Deforest Rate Distribution

Land Unit2

(two types of agentes Rsmall and R large)

Rsmall

+

+

Asmall

Deforest Allocation

G

(two types of agentes Asmall and A large)

Land Unitn

Model implementation in TerraME

Each Land Unitis anenvironment, nested in the Rondônia environment.

Global rate

...

Rondônia

deforestation rate distribution module
Deforestation Rate Distribution Module

Small Units Agent

latency > 6 years

Deforesting

Newly implanted

Deforestation > 80%

Factors affecting rate:

  • Global rate
  • Relation properties density - speedy of change
  • Year of creation
  • Credit in the first years (small)

Year of

creation

Slowing down

Iddle

Deforestation = 100%

Large and Medium Units Agent

Deforesting

Deforestation > 80%

Year of

creation

Slowing down

Iddle

Deforestation = 100%

allocation module different factors and rules
Allocation Module: different factors andrules

Factors affecting location of changes:

Small Farmers (500 m resolution):

  • Connection to opened areas through roads network
  • Proximity to urban areas

Medium/Large Farmers (2500 m resolution):

  • Connection to opened areas through roads network
  • Connection to opened areas in the same line of ownerships
allocation module different resolution variables and neighborhoods
Allocation Module: different resolution, variables and neighborhoods

1985

  • Small farms environments:
  • 500 m resolution
  • Categorical variable: deforested or forest
  • One neighborhood relation:
  • connection through roads
  • Large farm environments:
  • 2500 m resolution
  • Continuous variable:
  • % deforested
  • Two alternative neighborhood
  • relations:
  • connection through roads
  • farm limits proximity

1997

1997

simulation results
Simulation Results

1985 to 1997

terrame advantages drawbacks
TerraME Advantages & Drawbacks
  • Expressividade
  • Legibilidade
  • Data Aquisition & Result Analyses
  • Performance
research contribution
Research Contribution
  • The Nested-CA is formal model that allows:
    • Multiple scales: different temporal, spatial and behavioral resolutions and extents
    • Non-homogeneous space: multiple actors and process in different space partitions
    • Asynchronous space: different synchronization schemes in different space partitions
    • Non-isotropic space: alternative neighborhood relationships
    • LUCC processes representation: situated, continuous and discrete behavior, spatial iterators to describe spatial trajectories
  • The TerraME provides:
    • High level TerraME programming language.
    • GIS full integration.
    • Calibration and validation tools.
  • Futher work:
    • Visual modeling environment
    • High performance computing
obrigado

Obrigado...

Questions?

ad