Guofan Shao, professor of geo-eco-informatics, studies the Mount Paekdu Biosphere Reserve, a 326,000-acre forest preserve in North Korea. Since many researchers are unable to visit North Korea, Shao studies changes in the forest using remote sensing data.
The United Nations Educational, Scientific and Cultural Organization operates the Man and Biosphere Programme, which tries to understand the ecological, social and economic dimensions of biodiversity loss and reduce that loss in 551 sites worldwide. Shao said Mount Paekdu - together with an adjacent biosphere in China - has the world's highest plant biodiversity in a cool, temperate zone and is the habitat for many wildlife species, including the endangered Siberian tiger.
"This mountain is significant in terms of biological conservation," he said.
Shao and his collaborators started noticing through NASA satellite data that there were some changes happening to the land in North Korea. NASA images didn't have the resolution Shao needed to pinpoint what those changes were or how they were occurring, so he used Google Earth, which has a clear resolution down to 1 meter.
"Particularly in the core area, there should be no human activity - no deforestation," Shao said. "But when you look at the data with Google Earth, you can see the forest is no longer intact."
Google Earth images show that extensive logging has taken place in the North Korean biosphere. Shao estimated that as much as 75 percent of the forest in the core area had been removed in large strips.
"It's kind of a disappointment," said Shao, whose results were published in the journal Biological Conservation. "Hopefully more organizations, including governments, will pay more attention to the conservation issues there."
Without communication with North Korean officials or the opportunity to visit the site - both of which Shao has requested - there is no way to tell why the trees had been removed. Shao speculated that the land may be used for agriculture since Korea suffers severe food shortages.
"I don't really understand what's going on in the nature area," Shao said. "They may want to grow something, or they may just want the timber."
Forest on the China side, in the Changbaishan Biosphere Reserve, also was damaged, but not by logging. Overharvesting of pine nuts damaged nearly every pine tree in certain zones of the reserve and all but eliminated a food source for about 22 species of forest wildlife. Pine seed harvesting in the biosphere was banned in 2007, but pine tree populations declined because of the harvesting.
Shao said he would continue to monitor the biospheres for changes in the landscape using remote sensing data and that he hopes the study will shed light on deforestation issues in East Asia. He said it is urgent to develop cross-border strategies that can combat both detectable and hidden degradations to preserve forests of ecological importance.
Shao collaborated with researchers at the Chinese Academy of Sciences, the Jilin Changbai Mountain Academy of Sciences and Arizona State University.
Writer: Brian Wallheimer, 765-496-2050, email@example.com
Source: Guofan Shao, 765-494-3630, firstname.lastname@example.orgAg Communications: (765) 494-2722;
Brian Wallheimer | EurekAlert!
Safeguarding sustainability through forest certification mapping
27.06.2017 | International Institute for Applied Systems Analysis (IIASA)
Dune ecosystem modelling
26.06.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
21.07.2017 | Earth Sciences
21.07.2017 | Power and Electrical Engineering
21.07.2017 | Physics and Astronomy