The study, which used aerial photography to inventory structures at the fringes of public forests, is the first to look at development trends in the two states before and after the enactment of land use laws.
This image shows change in development from 1976 to 2006, from "Changes in Development Near Public Forest Lands in Oregon and Washington, 1974-2005: Implications for Management," available online at http://www.treesearch.fs.fed.us/pubs/45205.
Credit: National Agriculture Imagery Program
The findings are reported in Changes in Development Near Public Forest Lands in Oregon and Washington, 1974-2005: Implications for Management, a report published by the PNW Station.
"Although public forests are not necessarily directly subject to development, they still face management issues at their edges because of indirect development pressure," said David Azuma, a research forester at the station who led the study.
In Oregon and Washington, about half of all forest lands are publicly owned and managed by the Forest Service, Bureau of Land Management, Oregon Department of Forestry, and Washington Department of Natural Resources. Using a fine-scale grid of points on air photos across the two states, Azuma and colleagues classified areas outside of federal lands for land use and then recorded the number of structures within a 321-meter radius of each of these points.
"Quantifying the increases in structures in areas that have not been converted in land use can serve as a surrogate for the broader risk associated with development near public lands," Azuma said.
Among the study's findings:
Structure density within 1 kilometer of public forest more than doubled for each of the public owner groups between the 1970s and the mid-2000s.
Washington Department of Natural Resources lands are the most developed along their edges, with an average of 11 structures per square kilometer within 1 kilometer of their land – a rate that is more than twice that of lands managed by the other public land owners.
In Oregon, the greatest amount of development occurred along the edges of Bureau of Land Management forests, where there is an average of 4.4 structures per square kilometer within 1 kilometer and 19.5 structures within 2 to 5 kilometers of their land.
The greatest increases in structure density along public forest borders occurred in Pierce, King, Snohomish, and Clark Counties in Washington, and in Deschutes County in Oregon.
The study's findings suggest that areas with increasing development should probably expect continued development. The work can help agencies that manage public forests to better plan for management options at the edges of their land.
The report is available online (at http://www.treesearch.fs.fed.us/pubs/45205) and in print by request. Printed copies of the report will be available after December 20 and can be requested by emailing email@example.com or by calling (503) 261-1211 and referencing "PNW-RP-596."
The Pacific Northwest Research Station—headquartered in Portland, Ore.—generates and communicates scientific knowledge that helps people make informed choices about natural resources and the environment. The station has 11 laboratories and centers located in Alaska, Washington, and Oregon and about 400 employees. Learn more online at http://www.fs.fed.us/pnw.
Yasmeen Sands | EurekAlert!
WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf
First form of therapy for childhood dementia CLN2 developed
25.04.2018 | Universitätsklinikum Hamburg-Eppendorf
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences