STRATUM:Running a STRATUM Analysis

Creating a STRATUM Project

DefineObjectives

Perform FullInventory

Perform SampleInventory

Draw RandomSample

Map Sample

Install i-Tree(Desktop andPDA

Configure PDA

Quality Check

Collect Data

Transfer Data toDesktop

Community ForestManagement Plan

OR OR

Interpret Results

Report Results

Define DataInputs

Import AccessDatabase to STRATUM

Start STRATUMProject

Install STRATUM

ChooseInventory Method

Format/Quality Check/

Convert Data to Access

Use ExistingInventory

Process OverviewCreating a new STRATUM project:Formatting your inventory database i-Tree Inventory PDA Utility Other inventories

Converting Excel inventories to Access format STRATUM formatted spreadsheet Create Access table for STRATUM import

Import Access database into STRATUMDefine Unmatched Species CodesDefine Inventory

Step 1: Formatting the Inventory Database

i-Tree PDA Utility Do not require formatting Shared database w/MCTI A STRATUM-compatible

Access table is automatically produced

Other Inventories STRATUM can only run after a

STRATUM-formatted MS Access inventory table has been imported.

Formatting requirements: MS Access (.mdb) table named

“STRATUM_Inventory” Must have STRATUM field headings

17 field names: order, spelling, case sensitive Format (i.e., numeric vs. alpha-numeric; null

value)

Step 2: Converting Excel inventories into Access Tables for STRATUM

Convert data to STRATUM format

Create metadata sheet

Create Access database and import inventory

Step 3: Import Access Database into STRATUM

Launch STRATUM applicationDefine inventory type (sample vs. full)Import STRATUM-formatted .mdb fileEstablish DBH value and Management ZonesSelect Climate Region

Step 4: Define Unmatched Species Codes

STRATUM Limited to known predominant species by climate zoneNational Tree Database Codes

~22 species modeled per Climate ZoneSpecies Value AssignmentsTree Types

Non-tree Species CodesUsed for stocking reportsWon’t be counted as trees in reportsE.g., AVPSM = Available Planting Space for

Medium tree

Step 5: Define InventoryData fieldsDefault or CustomUnits (DBH only)

Tree Inventory by Record Edit existing recordsInsert new trees

Define Sample DataTotal number of Street Segments

(Citywide or by Zone)Change numbered zones to area

name

Define City Data

Define Cost Data

Define Benefit Price Data

Benefit Price DataEnergyHeating and Cooling

Air Pollution Emissions Transaction costsWang & Santini

Carbon DioxideeCO2.com

Stormwater Runoff ReductionDetention/RetentionProgram ExpendituresSanitary Water Treatment

Aesthetic and Other BenefitsMedian Home Sales Price

STRATUM:Reporting & Interpretation

DefineObjectives

Perform FullInventory

Perform SampleInventory

Draw RandomSample

Map Sample

Install i-Tree(Desktop andPDA

ConfigurePDA

Quality Check

Collect Data

Transfer Data toDesktop

Community ForestManagement Plan

OR OR

Interpret Results

Report Results

Define DataInputs

Import AccessDatabase to STRATUM

Start STRATUMProject

Install STRATUM

ChooseInventory Method

Format/Quality Check/

Convert Data to Access

Use ExistingInventory

Generating & Interpreting Reports

Interpret Results

Report Results

Resource StructureAnalysis Benefit Cost Analysis

Community ForestManagement Plan

Resource Structure Analysis: 15 Basic Reports

Population SummarySpecies DistributionRelative Age DistributionImportance ValuesConditionRelative Performance Index (RPI)Stocking Level

Maintenance RecommendationMaintenance TaskLand UseLocationConflictsCanopy CoverOtherReplacement Values

Benefit-Cost Analysis Reports

Annual BenefitsEnergyStormwaterAir QualityCarbon DioxideAesthetic/otherAll

Management Costs

Net Annual Benefits

STRATUM ReportsGlobal Exports to Excel SpreadsheetsCan interface with graphs and change themManipulate data and select your own format

type

Screen Prints to PDF, Word and RTF filesAs viewed on screen - ready for reports,

publicationsFixed formatting on some reports

Generating Reports

1. Go to Report

2. Select Resource Structural Analysis

3. Select Report Type – Population

Screen Tools for Viewing Reports

Tabs

GoTo Page

Page selection

Toggle Group Tree

Zoom

Search

Report Format Selections

Print shortcut

Screen export

Refresh screen (changing between report formats)

DefineObjectives

Perform FullInventory

Perform SampleInventory

Draw RandomSample

Map Sample

Install i-Tree(Desktop andPDA)

ConfigurePDA

Quality Check

Collect Data

Transfer Data toDesktop

Community ForestManagement Plan

OR OR

Interpret Results

Report Results

Define DataInputs

Import AccessDatabase to STRATUM

Start STRATUMProject

Install STRATUM

ChooseInventory Method

Format/Quality Check/

Convert Data to Access

Use ExistingInventory

Management ConsiderationsThe average tree provides over $125 in annual benefits.Davis’s street trees return $5 for every $1 spent on their management.

Can Davis’s trees sustain this level of benefits?

Management Issues

Needs to achieve:1. Adequate structural complexity2. Adequate canopy cover3. Adequate pruning & maintenance

Structural Complexity

Plant species that are well adapted and long-livedReduce over reliance on too few speciesRejuvenation of areas where even, old-aged stands predominate

Goal:Achieve adequate structural complexity focused on long-term benefitsHow?:

Perpetuate current canopy coverSelective removal and replacement where even,

old-aged stands predominate

Promote additional coverageFill empty spacesPlant large-stature trees where feasibleSelect well adapted and long-lived species

Stable Canopy CoverGoal:Maximize Canopy Cover to offset detrimental effects of hardscape How?:

Improve young tree careAdjust pruning cycle: 8 yrs to 4-5 yrsTarget species in the poorest health

Pruning & MaintenanceGoal:Improve tree condition to increase benefits provided while reducing liability and long-term maintenance costsHow?:

ConclusionDavis has approx. 24,000 street trees.Citywide, the publicly managed trees produce $3.1 million in annual benefits for a total cost of $560,000.Continuing this level of benefits will take strategic program planning:Adequate young tree care.More frequent inspection and pruning.Rejuvenating aging populations.Planting areas void of trees.

STRATUM in PracticeMunicipal BCAMunicipal Tree Resource Assessments/State of the Urban ForestCommunity Forest Management PlansCity of Davis

Program AdvocacyCity of N. Vancouver

Street Tree Resource Analysis/State of the Urban Forest Report

Executive SummaryThe Tree ResourceManagement CostsAnnual BenefitsManagement ImplicationsResource complexityResource extentMaintenance needs

Appendices

Davis Community Forest Management Plan

OverviewContext: Existing Conditions History of Tree Management Administration and Management State of the Community Forest

Community Forest Goals, Policies, Standards and ActionsGlossaryAppendiceshttp://www.cityofdavis.org/pcs/trees/cfmp.cfm

STRATUM & Street Tree Master Plans

Provide the best SERVICE possibleMost efficient use of

resourcesMaximize net benefits of

trees Increase customer

SatisfactionCornerstone of compelling

case for program funding

Level of Service Analysis

Quantifiable measures of capacity or work performedIdentify measures for each program area

Tree planting (% full stocking) Young tree care (cycle) Large tree care (cycle) Hazard tree abatement (% dead or dying) Administration ($/tree)

Compare Current LOS with Standard and Optimal LOS

Identify Funding SourcesTree planting grantsPublic awareness and volunteer training grantsLocal measures Assessment districtsParcel tax

Other revenue sourcesCarbon dioxide emission reduction creditsShade tree programs for energy conservationStormwater managementAir pollution mitigation

Advocacy