SpringerLink - Journal Article:
The preliminary results imply that to improve the tree species identification accuracy and achieve a practical application level in urban area, multi-temporal (multi-seasonal) or hyperspectral data image data should be considered for use in the future.
Showing posts with label remote sensing. Show all posts
Showing posts with label remote sensing. Show all posts
Sunday, February 14, 2010
Saturday, February 13, 2010
Technical report: Geospatial Assessment in Support of Urban & Community Forestry Programs; USA
Geospatial Assessment in Support of Urban & Community Forestry Programs — Urban Forestry South:
A study initiated to examine the strengths and limitations of existing methods for identifying forest opportunities in urban areas.
Geospatial information is an important component of urban and community forestry assessment in the Northern Area. The syn-thesis of geographic data can help inform the decision making process at a range of scales, from prioritizing communities within a state to targeting individual properties for tree plantings. For accurate and meaningful information to be gained from these assessments it is crucial that any geospatial assessment employ datasets and tools that are appropriate to the scale of analysis.
A study initiated to examine the strengths and limitations of existing methods for identifying forest opportunities in urban areas.
Geospatial information is an important component of urban and community forestry assessment in the Northern Area. The syn-thesis of geographic data can help inform the decision making process at a range of scales, from prioritizing communities within a state to targeting individual properties for tree plantings. For accurate and meaningful information to be gained from these assessments it is crucial that any geospatial assessment employ datasets and tools that are appropriate to the scale of analysis.
Monday, February 1, 2010
Object-based image analysis and LiDAR provide tools for tree canopy assessment for greener cities
Assessing Urban Tree Canopy for Greener Cities
An increasing number of urban planners and local authorities want to improve air quality, reduce energy consumption and ease storm water flows in their cities. A sufficient number of healthy trees is essential to
achieving these ambitious goals.
Researchers at the University of Vermont, working in conjunction with the U.S. Forestry Service, utilized eCognition to develop an application that assesses and quantifies urban tree canopies (UTC). By integrating data from aerial photos, LiDAR and taxation maps, the application determines the tree canopy coverage in urban areas, quantifying how much tree cover is on public land and how much is on private land. Major U.S. cities already use this information to accurately quantify the amount of potential additional tree canopy.
An increasing number of urban planners and local authorities want to improve air quality, reduce energy consumption and ease storm water flows in their cities. A sufficient number of healthy trees is essential to
achieving these ambitious goals.
Researchers at the University of Vermont, working in conjunction with the U.S. Forestry Service, utilized eCognition to develop an application that assesses and quantifies urban tree canopies (UTC). By integrating data from aerial photos, LiDAR and taxation maps, the application determines the tree canopy coverage in urban areas, quantifying how much tree cover is on public land and how much is on private land. Major U.S. cities already use this information to accurately quantify the amount of potential additional tree canopy.
Wednesday, December 30, 2009
Del Mar College's Integrated Geospatial Education & Technology Training program offers course on Urban Tree Canopy analysis
Topic: Urban Environmental Management
Urban Tree Canopy
Problem Statement: Cities are heat islands for capturing carbon dioxide from a concentration of vehicles and buildings.
Urban forests help mitigate those effects. Can we quantify some of those effects using remote sensing imagery?
Level: beginning
Software: ArcGIS, ENVI, Powerpoint, Word
Urban Tree Canopy
Problem Statement: Cities are heat islands for capturing carbon dioxide from a concentration of vehicles and buildings.
Urban forests help mitigate those effects. Can we quantify some of those effects using remote sensing imagery?
Level: beginning
Software: ArcGIS, ENVI, Powerpoint, Word
Landsat images offer clearer picture of changes in watershed over 22 year period; Chesapeake Bay
Chesapeake Bay Journal: Landsat images offer clearer picture of changes in watershed - January 2010: Images taken from satellites more than 400 miles above the Earth's surface are bringing land-cover changes throughout the Chesapeake Bay watershed into tighter focus.
The images, which capture tracts as small as 30 square meters, offer a surprising picture of some trends in land cover. For instance, they indicate that the rate of farm land loss has slowed, while the fastest rate of urban expansion in recent decades occurred between 1984 and 1992.
But the images also confirm the ongoing-and accelerating-loss of forest land in the watershed.
The images, which capture tracts as small as 30 square meters, offer a surprising picture of some trends in land cover. For instance, they indicate that the rate of farm land loss has slowed, while the fastest rate of urban expansion in recent decades occurred between 1984 and 1992.
But the images also confirm the ongoing-and accelerating-loss of forest land in the watershed.
Friday, September 18, 2009
UVM Spatial Analysis Lab named Definiens Center of Excellence for UTC assessments and other work-also named ESRI Development Center; Burlington, VT
University Communications : University of Vermont:
Release Date: 09-16-2009
Author: Jeffrey R. Wakefield1
Email: Jeffrey.Wakefield@uvm.edu2
Phone: 802/656-2005 Fax: (802) 656-3203
The University of Vermont's Spatial Analysis Laboratory, part of the Rubenstein School of Environment and Natural Resources, has received two prestigious honors in recent months.
The Definiens corporation, founded by Nobel Prize laureate Gerd Binnig, recently designated the lab one of eight international Centers of Excellence, based in part on the Urban Tree Canopy (UTC) assessment work the lab carried out in collaboration with the U.S. Forest Service. The other seven Centers of Excellence organizations are among the most well-respected and well-funded remote sensing labs in the world.
In addition, ESRI, a leading developer of GIS software, last spring named the lab one of the first ESRI Development Centers.
Release Date: 09-16-2009
Author: Jeffrey R. Wakefield1
Email: Jeffrey.Wakefield@uvm.edu2
Phone: 802/656-2005 Fax: (802) 656-3203
The University of Vermont's Spatial Analysis Laboratory, part of the Rubenstein School of Environment and Natural Resources, has received two prestigious honors in recent months.
The Definiens corporation, founded by Nobel Prize laureate Gerd Binnig, recently designated the lab one of eight international Centers of Excellence, based in part on the Urban Tree Canopy (UTC) assessment work the lab carried out in collaboration with the U.S. Forest Service. The other seven Centers of Excellence organizations are among the most well-respected and well-funded remote sensing labs in the world.
In addition, ESRI, a leading developer of GIS software, last spring named the lab one of the first ESRI Development Centers.
Friday, August 7, 2009
Aussies use remote sensing and GIS to target optimal locations for planting to mitigate urban heat island; Brisbane, Australia
New technology helps identify right location for trees - Environment - News | Northside Chronicle
BRISBANE: The Brisbane City Council has become the first local government in Australia to use satellite technology to target where trees should be planted to shade the city.
The technology allows council to pinpoint the hottest spots of the city down to individual streets.
More than 10,000 street trees will shade the city’s hottest streets, parks and bikeways over the next 12 months, based on maps generated from heat and cool-spot technology.
The project is part of Lord Mayor Campbell Newman’s 2 Million Trees project, which in turn supports the target to restore 40 per cent of Brisbane to bush cover by 2026.
BRISBANE: The Brisbane City Council has become the first local government in Australia to use satellite technology to target where trees should be planted to shade the city.
The technology allows council to pinpoint the hottest spots of the city down to individual streets.
More than 10,000 street trees will shade the city’s hottest streets, parks and bikeways over the next 12 months, based on maps generated from heat and cool-spot technology.
The project is part of Lord Mayor Campbell Newman’s 2 Million Trees project, which in turn supports the target to restore 40 per cent of Brisbane to bush cover by 2026.
Thursday, June 4, 2009
City finds high resolution data leads to more accurate picture of UTC; Greensboro, NC
Tree canopy covers nearly 50 percent of Guilford County : News-Record.com : Greensboro & the Triad's most trusted source for local news and analysis
Wednesday, June 3, 2009
By Morgan Josey Glover
Staff Writer
A new study by the city of Greensboro could allay concerns about residential and commercial development’s impact on Guilford County’s tree canopy.
A survey of tree coverage based on 2007 aerial photographs showed that almost 50 percent of the county is covered by trees. In comparison, American Forests suggests an average tree cover of at least 40 percent in combined urban and rural areas.
“I came away with the impression that countywide we’re sitting pretty good,” said Michael Cusimano, a city urban forester who will present the report to the Advisory Commission on Trees today. “The focus now needs to be on managing our trees.”
Greensboro last studied its tree canopy almost a decade ago, based on satellite images taken in 1984, 1993 and 2000. Those pictures showed that the city had lost 18 percent of its tree cover during those years, motivating the city to adopt a tree ordinance that requires developers to save or replace some of the trees they cut down.
The previous study, however, was based on obsolete technology that showed 30 square meters of land per pixel, Cusimano said. The cameras used in the newer study can show 6 inches per pixel, thus capturing more trees than could be shown before. The new study also expanded its scope to examine coverage countywide, both by municipality and watershed.
Wednesday, June 3, 2009
By Morgan Josey Glover
Staff Writer
A new study by the city of Greensboro could allay concerns about residential and commercial development’s impact on Guilford County’s tree canopy.
A survey of tree coverage based on 2007 aerial photographs showed that almost 50 percent of the county is covered by trees. In comparison, American Forests suggests an average tree cover of at least 40 percent in combined urban and rural areas.
“I came away with the impression that countywide we’re sitting pretty good,” said Michael Cusimano, a city urban forester who will present the report to the Advisory Commission on Trees today. “The focus now needs to be on managing our trees.”
Greensboro last studied its tree canopy almost a decade ago, based on satellite images taken in 1984, 1993 and 2000. Those pictures showed that the city had lost 18 percent of its tree cover during those years, motivating the city to adopt a tree ordinance that requires developers to save or replace some of the trees they cut down.
The previous study, however, was based on obsolete technology that showed 30 square meters of land per pixel, Cusimano said. The cameras used in the newer study can show 6 inches per pixel, thus capturing more trees than could be shown before. The new study also expanded its scope to examine coverage countywide, both by municipality and watershed.
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