Integrating GIS Data and Management Systems to Assess Urban Forest Ecosystems

Transcription

1 Integrating GIS Data and Management Systems to Assess Urban Forest Ecosystems

2 Introduction: Deborah Sheeler GIS Supervisor Software Solution: ArcPad Custom Field Collection Program William Ayersman GIS Analyst Land Cover Analysis: Urban Tree Canopy Assessments Tina McKeand Urban and Community Forestry Specialist Urban Forest Assessment: Case Studies

3 Software Solution: ArcPad Custom Field Collection Program

4 Software Solution: ArcPad Custom Field Collection Program Mapping features - Trees - Open Space - Stands Location is only the start! Recording attributes - Blockside - Species - Diameter - Condition - Prescribed maintenance - Tasks/Work

5 Software Solution: Custom Input Forms Ensure Consistency Standardized User-friendly

6 Software Solution: Custom Input Forms Organized Intuitive More Efficient

7 Software Solution: Custom Input Forms Custom/Automated Calculations Reduced Training Time

8 Land Cover Analysis: Urban Tree Canopy Assessments The purpose of the Urban Tree Canopy Assessment projects are to use aerial photographs and satellite imagery with geographic information systems (GIS) data to understand the existing urban tree canopy (UTC) and help stakeholders make informed decisions about their urban forest. Results of the UTC Assessment will assist in Managing and Growing the Urban Forest. Set Canopy Goals Develop Street Tree Planting Plans Revise Policies Associated with Tree Canopy Determine Ecosystem Benefits Provided by the Urban Forest Promote the Benefits of Trees Develop Sound Urban Forest Management Plans

9 Basic Urban Tree Canopy Assessment Workflow 1) Data Collection and Preparation 2) Feature Extraction a) Image Preparation b) Selection of Training Data c) Land Cover Extraction 3) Manual Editing (QA/QC) 4) Accuracy Assessment 5) Analysis and Planning a) Land Cover Statistics b) Determination of Possible Planting Sites c) Ecosystem Benefits Analysis 6) Summary of Findings/Report

10 Section Title:

11 Results from Urban Tree Canopy Assessments Current canopy percentages Ecosystem benefits (current and future) Canopy fragmentation Possible locations for future canopy Canopy Calculators Wall Maps/Field Maps 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 18% 6% 47% 28% 0 Acres Tree Canopy 1,647 Pervious and Bare Soils Cover within Target Planting 536 Areas Pervious and Bare Soils Cover 4,251 Impervious Cover 2,603 Water 81 24% Total Possible UTC for Targeted Planting Areas

12 From Land Cover to

13 Case Study: Anchorage, Alaska (2010) Project Area: 1,955 square miles Goal: Canopy Preservation Solution: o Map the location and extent of tree canopy o Determine historical and existing canopy o Develop preservation strategies 400, , , , ,000 Population Growth 365, , Year

14 Case Study: Bonney Lake, Washington (2011) Project Area: ~11 square miles Goal: Augment Stormwater Management Areas (SMAs) Solution: o Map the location and extent of tree canopy o Overlay SMAs o Identify relationship between canopy cover and storm surge on storage/treatment facilities o Develop a strategic planting plan to increase tree canopy where storm surge is challenging SMA capacity

15 Case Study: Bonney Lake, Washington (2011) Project Area: ~11 square miles Goal: Protection of Significant Canopy Solution: o Map the location and extent of tree canopy o Overlay canopy with development potential o Determined how the canopy loss on highpotential parcels will affect overall canopy cover and community goals o Develop a planting strategy to mitigate the loss of tree canopy to development

16 Case Study: Roseville, California (2008) Project Area: ~35.5 square miles Goal: Street and Park Tree Management Solution: o Collect a GIS inventory of public trees on streets, in parks, and at city facilities o Integrate inventory into TreeKeeper management software o Manage trees and update inventory data (Generate work orders, track inspection and history, attach photos and reports, etc. )

17 Case Study: Roseville, California (2012) Project Area: ~35.5 square miles Goal: Natural Resource Preservation Solution: o Map and identify fragmentation of oak woodlands and other tree canopy o Identify priority planting sites for the protection of soils and natural resources o Develop planting sites to increase connectivity of existing canopy, wildlife habitat, and trail system. *Supports General Plan and community design goals.

18 Deborah Sheeler GIS Supervisor William Ayersman GIS Analyst Tina McKeand Urban and Community Forestry Specialist (M)

19