Importance of urban street tree policies: A Comparison of neighbouring Southern California cities

2017 ◽  
Vol 22 ◽  
pp. 105-110 ◽  
Author(s):  
Andrejs Galenieks
Forests ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 701 ◽  
Author(s):  
John Roberts ◽  
Andrew Koeser ◽  
Amr Abd-Elrahman ◽  
Benjamin Wilkinson ◽  
Gail Hansen ◽  
...  

Urban forests are often heavily populated by street trees along right-of-ways (ROW), and monitoring efforts can enhance municipal tree management. Terrestrial photogrammetric techniques have been used to measure tree biometry, but have typically used images from various angles around individual trees or forest plots to capture the entire stem while also utilizing local coordinate systems (i.e., non-georeferenced data). We proposed the mobile collection of georeferenced imagery along 100 m sections of urban roadway to create photogrammetric point cloud datasets suitable for measuring stem diameters and attaining positional x and y coordinates of street trees. In a comparison between stationary and mobile photogrammetry, diameter measurements of urban street trees (N = 88) showed a slightly lower error (RMSE = 8.02%) relative to non-mobile stem measurements (RMSE = 10.37%). Tree Y-coordinates throughout urban sites for mobile photogrammetric data showed a lower standard deviation of 1.70 m relative to 2.38 m for a handheld GPS, which was similar for X-coordinates where photogrammetry and handheld GPS coordinates showed standard deviations of 1.59 m and the handheld GPS 2.36 m, respectively—suggesting higher precision for the mobile photogrammetric models. The mobile photogrammetric system used in this study to create georeferenced models for measuring stem diameters and mapping tree positions can also be potentially expanded for more wide-scale applications related to tree inventory and monitoring of roadside infrastructure.


Author(s):  
E. Gregory McPherson ◽  
Natalie S. van Doorn ◽  
John de Goede

Author(s):  
William R. Selbig ◽  
Steven P. Loheide ◽  
William Shuster ◽  
Bryant C. Scharenbroch ◽  
Robert C. Coville ◽  
...  

2021 ◽  
Vol 4 ◽  
pp. 100066
Author(s):  
Michael K. Crosby ◽  
T. Eric McConnell ◽  
Jason J. Holderieath ◽  
Bjarki Þ. Kjartansson ◽  
Björn Traustason ◽  
...  

2015 ◽  
Vol 41 (5) ◽  
Author(s):  
Ivan André Alvarez ◽  
Bruna Cristina Gallo ◽  
Edlene Aparecida Monteiro Garçon ◽  
Osvaldo Tadatomo Oshiro

Campinas Metropolitan Region is the third richest city in Brazil. This study assesses the urban street trees of Campinas based on data from a survey performed using satellite images in the year 2011. All public domain trees in the street system were counted and separated into trees, shrubs, palm trees, and seedlings. The density of trees was obtained using the images census and expressed as trees per linear kilometer for the perimeter of the block. The number of trees per linear kilometer was grouped into nine classes of different densities for data validation. The final number of trees was estimated based on the validation’s results. The Gini coefficient shows that the number of trees per person is very irregular in city neighborhoods (i.e., Campinas has a fairer income distribution than street trees distribution). There is a lower density of trees in the downtown area, due to the high concentration of population, and in more peripheral neighborhoods, due to the lack of design planning. The results obtained here may be used to support a new setting of local priorities for planting actions aimed at urban forestry management.


2012 ◽  
Vol 16 (4) ◽  
pp. 801-818 ◽  
Author(s):  
Jürgen H. Breuste
Keyword(s):  

2015 ◽  
Vol 136 ◽  
pp. 174-179 ◽  
Author(s):  
Mark S. Taylor ◽  
Benedict W. Wheeler ◽  
Mathew P. White ◽  
Theodoros Economou ◽  
Nicholas J. Osborne

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