The Impact of Land Use Changes on the Future Tree Distributions Presented by Presented by Jin-Oh Kim Jin-Oh Kim Community and Regional Planning Community and Regional Planning School of Architecture School of Architecture University of Texas at Austin University of Texas at Austin
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The Impact of Land Use Changes on the Future Tree Distributions Presented by Jin-Oh Kim Community and Regional Planning School of Architecture University.
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The Impact of Land Use Changes on the Future Tree Distributions
Presented by Presented by
Jin-Oh KimJin-Oh Kim
Community and Regional PlanningCommunity and Regional Planning
School of ArchitectureSchool of Architecture
University of Texas at AustinUniversity of Texas at Austin
- Biogenic Volatile Organic Compounds (BVOC)Biogenic Volatile Organic Compounds (BVOC) forms forms ozone in ground-level when mixed with nitrogen oxides from ozone in ground-level when mixed with nitrogen oxides from anthropogenic sources.anthropogenic sources.
- Differences in climatology including Differences in climatology including temperaturetemperature and and cloud cloud covercover, and , and land useland use strongly affect biogenic emissions. strongly affect biogenic emissions.
- Few studies have focused on the relationship between Few studies have focused on the relationship between land land use patternsuse patterns and its impact on spatial variation in and its impact on spatial variation in biogenic biogenic emissionsemissions densities. densities.
Introduction
Land Development
Disaster (fire, flood, etc), disease (oak wilt)
Natural Environment (soil, water, temperature etc.)
Trees (oak)BVOC+Nitrogen Oxides
Temperature, Cloud cover
Relationship of Trees and Land Development in Air Quality Context
Biogenic Volatile Organic Compounds
VOC
Volatile Organic Compounds
HumanHealth
- In Texas, In Texas, vegetation and forests in eastern and central Texasvegetation and forests in eastern and central Texas are the main sources of emissions of BVOC. are the main sources of emissions of BVOC.
- Even though most plants emit some VOCs, the largest emitters are Even though most plants emit some VOCs, the largest emitters are oaks, pines, sweet gums, eucalyptus, and oaks, pines, sweet gums, eucalyptus, and poplarspoplars. .
Problem Statements
Density Map of Biogenic Emission in Texas in 1997 (EPA)
High Emission Density
1. Predict Future Tree Distributions based on Land Use Scenarios
3. Recommendations to Improve Land use Scenarios
Objectives
2. Understanding the Impact of Land Development on Oak Trees
Central Texas region (Travis, Williamson, Bastrop, Hays, Caldwell)
Research Areas
Data Sources
Texas Vegetation Map (From Dr. David Allen) Land Development Scenario Maps (Dr. Barbara Parmenter, Envision Central Texas Project) USDA Soils Data for Central Texas Area (Statsgo State Soil Database) Color infra-red Digital OrthophotoTNRIS, http://www.tnris.state.tx.us/)
Live Oak, Ashe Juniper Parks
Post Oak, Woods, Forest and Grass
Post Oak Woods and Forest
Live Oak, Mesquite, Ashe Juniper
Analysis of Vegetation Types in Central Texas
Scenario A Scenario B
Scenario C Scenario D
Impact of Land Development on Trees
Tree Distribution in 2001
Land Development Scenarios Proposed by Envision Central Texas Project
Scenario A Scenario B
Scenario C Scenario D
Projection of Future Land Development Impact on Trees