Getting to know ArcGIS - PowerPoint PPT Presentation

1 / 76
About This Presentation
Title:

Getting to know ArcGIS

Description:

Getting to know ArcGIS – PowerPoint PPT presentation

Number of Views:147
Avg rating:3.0/5.0
Slides: 77
Provided by: lynns56
Category:
Tags: arcgis | getting | know | thys

less

Transcript and Presenter's Notes

Title: Getting to know ArcGIS


1
Getting to know ArcGIS
2
GIS Data StructureFor NatureServe Vista
  • Vector data
  • Points, lines, polygons and attributes

3
Vector Analysis
  • Operation based
  • GeoProcessing Tools in ArcGIS
  • -Useful for data prep not
  • core to Vista functionality
  • -Buffer
  • -Union
  • -Clip
  • -Intersect

4
GIS Data StructureFor NatureServe Vista
  • Raster data
  • Grid cells contain one value per cell

5
Raster Analysis
  • Cell based functions
  • Titled Spatial Analyst tools in ArcGIS

6
ArcGIS
7
ArcMap
NatureServe Toolbar
Catalog and ToolBox
Add Data
Identify
Zoom Tools
Set Reference Scale
Select Features
Select Elements
New, Open, Save, and Print
Toggle Editor Toolbar
8
ArcCatalog
Details, Thumbnails, etc
Map a directory
Data Type Icons
Geometry and Table
View, create and edit
Same as ArcMap
Metadata toolbar
Name and data Type
9
ArcToolbox
Toolbox Folder
Secondary Toolbox Folder
Tool - Launch Wizard
10
Maintaining and Updating a ProjectusingVers
ion 1.3
11
Some Jargon
  • Conservation Elements the features you wish to
    conserve representing biodiversity other
    conservation values
  • Element viability/integrity requirements
    representing the site or population needs for
    proper condition and minimum size
  • Element conservation goals representing the
    requirements for metapopulation persistence or
    ecosystem functioning in the planning region
  • Compatibility representing analysis of current
    or alternative futures to meet element
    requirements while maximizing options to meet
    other land use objectives

12
Scoping the Project
  • Big picture question
  • Conservation specifics
  • Project environment
  • Resources

13
Pre paring the Database
  • Hardware/software
  • Computer appropriate to project size
  • ArcGIS with Spatial Analyst installed
  • NatureServe Vista installed
  • Project properties

14
Populating the Database
  • Element Data
  • Species
  • Ecosystem
  • Other
  • Element Properties
  • Element Condition
  • Data Confidence
  • Map Context
  • Element Category

15
Data Preprocessing
  • Data prep is critical for Vista analyses
  • Landscape condition layer
  • Occurrence versus distribution layers
  • Data derived from raster layers / memory
  • Shapefiles with Z values

16
Landscape ConditionLayer
  • Landscape Integrity Indices
  • Combines land use, roads, infrastructure,
    pollution, etc.
  • Model weights effects, adds distance effect
  • Can be element-specific

Greater Yellowstone Area
17
Distributions
Occurrences
18
Raster to Vector and Shapefiles with Z values
Vectorizing raster layers without simplifying can
lead to large shapefiles and memory problems.
Any shapefile created with Z values must have
them manually removed before introducing the
shapefile into Vista.
19
Selecting Conservation Elements
  • Selecting the elements for conservation attention
    should reflect
  • Laws what must be protected
  • Values what does the community, stakeholders,
    decision makers want to protect
  • Scientific concepts such as coarse and fine
    filter assessment, ecosystem function, etc.

20
Conservation ElementsRepresenting Composition,
Structure, and Function of Regional Landscapes
Fine Filter Elements Focus of land
trust acquisition and easements
  • Species
  • Imperiled, Declining, Vulnerable, Endemic
  • Management Indicator Species
  • Ecological Communities
  • Rare plant communities
  • Rare aquatic communities
  • Unique environments
  • Ecosystems
  • Groups of communities interconnected on land and
    waterscapes
  • Natural pattern and process at local scales
    useful for management and monitoring
  • Already identified priority areas
  • Non-Biological Elements
  • Scenic views
  • Archaeological cultural sites
  • Valuable agriculture soils
  • Natural hazard zones

Coarse Filter Elements Focus of land
trust collaboration w/government industry
21
Other Element Selection Considerations
  • Current state of distribution data and
    conservation knowledge
  • Relative importance of the element in influencing
    decision making
  • Ability of a better mapped/known/loved element to
    act as a surrogate for one or more little known
    element(s)
  • Ability of the planning region to offer
    meaningful conservation for the element

22
Where Does the Data Come From?
  • Spatial distribution maps of each element come
    from
  • Heritage data
  • land cover maps
  • modeled distributions
  • museum collections
  • local information sources
  • Each element occurrence has
  • A viability/integrity score
  • A confidence score

Ecological systems
Species and community occurrences
Modeled distributions
23
Element Conservation Requirements
  • Weight a simple expression of relative
    importance. Multiple weightings possible e.g.,
  • Imperilment (Vista default)
  • Social/economic value
  • Legal requirements
  • Minimum occurrence size based on
  • Species behavior, e.g., foraging area required
  • Population dynamics/demographics
  • Disturbance regime
  • Best guess based on apparently healthy existing
    populations

24
Variability in Nature
25
Core Conservation Concepts
  • Elements have individual conservation
    requirements and responses to
  • Development
  • Management
  • Disturbance
  • disease, etc.
  • The process of evaluating current condition,
    threats from anticipated future uses and
    disturbances, and options for achieving
    conservation should be sensitive to these
    individual element needs and sensitivities.

26
Trade-offComplexity for Practicality
  • We tend to substitute coarse pattern analysis
    and rules of thumb for
  • Population dynamics over space and time
  • Interspecific interactions (pollination,
    competition, herbivory, predation)
  • Patch dynamics of disturbances structure
  • Short- and long-distance migrations
  • Needs for long term migration due to climate
    change
  • Potential for diversification of species to
    subspecies and to new species
  • Adapted from Pressey
  • But these complexities can be incorporated
    through additional analyses

27
Example of Complex Interactions
County Govt
Logging Industry

County Zoning

-



Land Developers
EPA Fire Policy
State Fire Policy
Agency Timber Policy
2nd Home Owners






BMPs
-



2nd Home Development
Fire Suppression
Timber Harvest

-
-
-
Loss of Habitat
Loss of Adequate Area for Maintenance of
Metapopulation
Degradation of Suitable Longleaf Habitat
-
/- are rules of thumb in a complex model
Red-cockaded Woodpeckers
Courtesy Rick Schneider
28
Element Conservation Requirements
  • Compatibility
  • The list of land uses that will retain element
    viability when occurring in the same location.
  • Generally uses rules of thumb such as
    urbanization causes release of house cats which
    are incompatible with a ground nesting bird
    species.

29
Element Conservation Requirements
  • Conservation goals
  • A quantity of the elements distribution required
    to meet laws, policies, or values that is of
    sufficient size patches falling in compatible
    land use backed by reliable policies
  • Can be a percentage or integer value
  • Can have multiple goal sets, e.g., preferred goal
    and minimum goal

30
Importing Elements
  • Element Value Layers
  • Raster layer
  • One per element
  • Interactive reports
  • Input to subsequent Vista analyses

31
Hands-On
  • In this hands-on section you will have a chance
    to complete the following
  • Set Project Properties
  • Enter Element Viability/Integrity
  • Enter Confidence Scores
  • 4. Assign Categories
  • 5. Create Map Context layers

32
Conservation Value Summaries
  • Examining Element Data
  • Across the Planning Area

33
What is a CVS?
  • Composite score of EVLs across the planning area
  • Visualize important conservation concepts like
    richness, endemism, integrity
  • Flexible analysismethods

34
Components of a CVS
  • Required
  • Element Conservation Value layers (EVLs)
  • Optional
  • Filter
  • Weighting
  • Site Layer
  • Map Context

35
Typical CVS Questions
  • Where are the most important areas for
    conservation?
  • Which locations have high element richness?
  • What locations have low or high data confidence?
  • What areas have low or high element viability?

36
  • Hands On
  • In this hands-on section we will answer the
    following questions
  • Where are areas with high element richness?
  • Where are the highest value areas for
    conservation?
  • Through answering these questions we will become
    familiar with the following Vista operations
  • Creating Filters
  • Creating Weighting Systems
  • Building Conservation Value Summaries
  • Using Site Explorer

37
Define Scenario
  • Describing land use and policy across the panning
    area

38
Scenarios
  • Developed using land use data and policy data
  • Paint picture of the project area
  • Joined with element data to create Scenario
    Evaluations

39
Scenario Concepts
  • Complete scenarios
  • The more completely a scenario represents what is
    or could be going on throughout the planning
    area, the more accurate an assessment youll get
    and the better planning you can do
  • Stepwise scenarios and assessments
  • Baseline of current actual land use
  • Baseline of current allowable land use and or
    trends
  • Known proposals for land use plan changes, policy
    changes, individual large projects, etc.

40
Building the Scenario
  • Translator for every layer
  • Single and multi-value
  • Precedence
  • Land use only
  • Policy only

41
Scenario Output
Land Use
Policy Type
42
Hands On
In this hands-on section we will answer the
following question How are land use and policy
distributed across the planning area? While
answering this question we will become familiar
with the following Vista operations 1. Creating
Single Value Translators 2. Creating Multi-Value
Translators 3. Working with Scenario Layer
Precedence
43
Conservation Planning Practices
  • Conceptual approach to Vista design
  • Multi-party collaborative planning framework
  • Tool interoperability

44
A conceptual framework to integrate conservation
planning
  • Conservation is a land use supporting public
    values like any other land use
  • The key to rectifying conflicts among uses is to
    reveal where uses must occur and what is the
    envelope of options where they can occur
  • Collaborative land use planning will allow
    testing of options that identify where the
    objectives of each use can be met without
    foreclosing the ability of any one to be met

45
Envelope of options
Regional habitat connection
Forest of sufficient size for interior bird
species
Regional hwy corridor
Infrastructure served Economic devpmt area
Prime ag soils
Rare plant population
46
Core Conservation Concepts
  • Conservation planning and implementation need to
    happen at multiple scales to account for such
    things as
  • wide ranging species
  • natural disturbance regimes
  • Species with patchy distribution,and
  • ecosystem processes and succession.

47
But Scales Must Be Linked!
  • How to get from here

48
Core Conservation Concepts
  • Conservation planning must be dynamic to account
    for
  • Changing threats and opportunities
  • Improved knowledge about biodiversity and
    response to threats
  • Changing policies and economics
  • New discoveries, surveys, mapping, etc

49
Dynamic Ranking of Conservation Value
Conservation Planning Vision vs Process?
Courtesy UCSB
50
Three Analytical Approaches
Increasing data requirements, complexity,
integration
Define High Value Areas
Reduce Conflict
Create Solutions
Select important values (elements
characteristics)
Import baseline and evaluate scenarios
Select elements, set conservation goals and
design rules
Overlay maps of elements
Identify conflicts and opportunities
Integrate data on threats and cost
Identify general places to conserve or avoid
development
Reduce conflict/generate mitigation plans
Generate optimal solutions for meeting goals
Conservation Strategies
51
Data Expert Knowledge Inputs
Intermediate Processes Products
Outputs
How Vista Works
52
ScenarioEvaluations
  • Examining Land Use and
  • Policy Effects on Element
  • Conservation Goals

53
What is a Scenario Evaluation
Land use conflict map
Policy conflict map
  • Scenario Evaluations read the Scenario Import and
    Element Compatibilities to create rasters showing
    element / land use and element / policy conflicts.

54
Scenario Evaluation
  • Designate reliable policy
  • types
  • Compares element
  • response to
  • conservation goals
  • Allows use of other
  • Vista tools

55
Typical Scenario Evaluation Questions
  • Can I meet my conservation goals with this
    scenario?
  • Where do I have conflicts and opportunities for
    conservation?
  • What are the element and occurrence level effects
    on goals and viability?

56
Hands On
In this hands-on section we will answer the
following questions Are conservation goals
being met by current land use and policy? What
impact will a new residential development project
have on element conservation goals? While
answering this question we will become familiar
with the following Vista operations 1.
Populating the Element compatibility tab 2.
Creating Goal Sets 3. Reading Scenario Evaluation
reports
57
Site Explorer
  • Examining Conservation Properties of Specified
    Areas for Existing Analyses

58
Applying Site Explorer
  • Site Explorer can be used with
  • 1. Conservation Value Summaries
  • 2. Scenario Evaluations

59
Site Explorer Query Operations
  • Use as a query or ID tool
  • - As such it provides myriad data, for example
  • Number of occurrences
  • Area of the occurrences
  • Percent and number of compatible and/or
    protected occurrences
  • Percent and area of compatible and/or protected
    occurrences

60
Site Explorer Overrides
  • Analyze alternatives
  • Apply different land use or policies to parcels
  • All metrics updated on the fly
  • Interactive reports reflect alternatives
  • Easily revert to original analysis

61
Site Explorer Export Capability
  • Export alternatives
  • Alternatives are saved as .shp files for import
    into subsequent scenarios
  • Land use and policy stored as attributes
  • Provides permanent retention and analysis of
    planning alternatives

62
How to use Site Explorer
Options dialog allows selection by
attribute Define which element properties are
displayed using Options dialog
63
Hands On
  • In this hands-on section we will answer the
    following question
  • With a new residential development in place, how
    might we change land use and/or policy in
    non-development areas to support our element
    conservation goals?
  • While answering this question we will become
    familiar with the following Vista operations
  • Using Site Explorer for general Scenario
    Evaluation inquiries
  • Customizing selection criteria and display fields
    in Site Explorer
  • Using Overrides, export and import functions
  • Interpreting Site Explorer results

64
Puerto Rico Conservation Trust
  • Objectives
  • Biodiversity conservation
  • Cooperative planning and implementation among
    island institutions

Conflict (brown) and compatibility (blue) with
land use and policy
Conflict (brown) and compatibility (blue) with
proposed initial conservation areas
65
Analysis of Conservation and Economic Value of
Stands for Potlatch Corporation, AR
  • Objective Identify stands that are
  • free of conflict for economic forest products
    management
  • free of conflict for conservation management
  • in conflict and require further analysis and
    negotiation.

Green shades forest products opportunityBlue
shades conservation opportunityYellow-red
shades conflict areas
  • Study by NatureServe in Cooperation with Potlatch
    Corporation and the Arkansas Natural Heritage
    Commission

66
MARXAN and SPOT
67
Intro to MARXAN SPOT
  • What
  • Best bang for your buck approach
  • Find areas that best meet your goals using
  • Price
  • Fragmentation
  • Penalties
  • Your Goals
  • Some relatively complicated math
  • How
  • Both perform basically same function using almost
    identical methods
  • Who Developed
  • SPOT TNC
  • MARXAN Australia

68
The Basic Formula
  • We want to find the lowest
  • SolutionCost
  • Sum (Cost of each selected analysis unit)
  • Sum BLM(Cost of all exposed boundaries)
  • Sum (Shortfall penalties for each element with an
    unmet goal)

69
Exposed Boundaries Example
From SPOT Documentation
70
Boundary Length Modifier (BLM), Iterations and
Runs
  • The BLM alters the impact of boundary
    fragmentation
  • Not always straight forward value
  • The number of iterations and runs can be quite
    important
  • More is always better (but a bit slower)
  • Reading the documentation is still recommended

71
Penalties
  • Penalties are values which you assign to each
    goal that is applied when that goal is not met
  • This allows you to set some relative importance
    to each element

72
A Very Small Bit About the Math
  • Uses Simulated Annealing
  • Avoids local lowest solutions as compared to
    finding absolute lowest solution
  • Iterative process (lots of iterations)
  • Requires a bit of patience generating inputs if
    large number of elements or analysis units

73
Much More to These Products
  • Both are powerful
  • More functionality described on websites
  • Acquire tools at respective websites
  • MARXAN
  • SPOT

74
Vista in a DSS ToolkitTransportation Example
Other Sector Tools
Tools for Conservation Experts
Conservation Optimization Tools MARXAN, SPOT
Transportation Planning Quantm
Vista Framework Tool
Ecological Process Tools Connectivity,
restoration modeling
Biodiversity Tools Element Distribution Modeling
Tools
Land Use Planning CommunityViz
75
Vista CommunityViz IntegrationEvaluation of
baseline scenario by Endangered Species Act status
76
Write a Comment
User Comments (0)
About PowerShow.com