Fire Earth

Earth is fighting to stay alive. Mass dieoffs, triggered by anthropogenic assault and fallout of planetary defense systems offsetting the impact, could begin anytime!

Posts Tagged ‘forest’

Drought Affects nearly One Billion Trees in California

Posted by feww on December 31, 2015

Ecological catastrophe: 29 million trees dead, 58 million more on the brink

New research by a Carnegie research team has revealed that up to 58 million large trees in California has experienced “severe canopy water loss between 2011 and today due to the state’s historic drought.”

The U.S. Forest Service says more than 29 million trees in California forests have already died.

“In addition to the persistently low rainfall, high temperatures and outbreaks of the destructive bark beetle increased forest mortality risk.”

The team used laser-guided imaging spectroscopy tools that are mounted on the Carnegie Airborne Observatory (CAO) to measure the full impact of the drought on California’s forests, and combined the CAO data with satellite data starting 2011.

The team’s advanced tools showed that about 41,000 square miles (10.6 million hectares) of forest containing up to 888 million large trees experienced measurable losses of canopy water between 2011 and 2015.  Of this group, up to 58 million large trees reached water loss thresholds that the scientists deemed extremely threatening to long-term forest health.”

Should drought conditions persist, the team concluded, there would be substantial changes to already significantly weakened forest structures and ecosystems in the near future, given the severity of the exiting conditions.


Progressive forest canopy water stress in the state of California from 2011 to 2015. Credit: Greg Asner

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Image of the day

Posted by feww on June 10, 2008

Kolombangara


Mount Veve is an extinct volcano on Kolombangara, in the Solomon Islands, at 7.95° S 157.0666667° E.

Kolombangara is an island in the New Georgia Islands group of the Solomon Islands. Almost perfectly round in shape and about 15 km across, the island is a stratovolcano that reaches an altitude of 1,768 meters at Mount Veve. The island forms part of the southern boundary of the New Georgia Sound; to the northwest the Vella Gulf separates it from Vella Lavella and Gizo, while to the southeast New Georgia lies across the Kula Gulf.

Kolombangara is heavily forested, with few inhabitants. The name is from a local language, a rough translation of its meaning is “Water Lord” with approximately 80 rivers and streams running down its flanks. [Full Article]

File is available under the terms of the GNU Free Documentation License.

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