Category:Forests: Difference between revisions

From Green Policy
Jump to navigation Jump to search
No edit summary
No edit summary
Line 6: Line 6:
https://youtu.be/ddmyMveokjg
https://youtu.be/ddmyMveokjg


Forests and woodlands cover about 20% of Earth's land surface, spanning all but the highest latitudes. In the millennia since humans dispersed across all forested continents, we have transformed large areas of natural forest. Historically, our greatest impacts were made in temperate regions, but they now extend to forests in the tropics and the boreal zone. Only a fraction of the forests present centuries ago have escaped human influence; in many regions the forest is gone, has regrown as secondary forest, or consists of managed and plantation forests. Humans have also introduced new species, including pests and pathogens of trees. Other influences—such as climate warming that causes tree species to shift geographically and anthropogenic drought that causes forest dieback—take effect more slowly and may occur far from their source.
Forests and woodlands cover about 20% of Earth's land surface, spanning all but the highest latitudes. In the millennia since humans dispersed across all forested continents, we have transformed large areas of natural forest. Historically, our greatest impacts were made in temperate regions, but they now extend to forests in the tropics and the boreal zone. Only a fraction of the forests present centuries ago have escaped human influence; in many regions the forest is gone, has regrown as secondary forest, or consists of managed and plantation forests. Humans have also introduced new species, including pests and pathogens of trees. Other influences — such as climate warming that causes tree species to shift geographically and anthropogenic drought that causes forest dieback — take effect more slowly...


Even though modern forests are generally much altered from their natural state, their “health” still matters. It will dictate whether forests persist and function into the future, sustaining wildlife, producing timber, sequestering carbon, and performing other services...
'''News/Updates'''


Understanding how we influence forest health and function is a key challenge for the future, as we increasingly realize the importance of forests to the maintenance of a healthy planet.
[https://www.nsf.gov/news/news_summ.jsp?cntn_id=136815 Via National Science Foundation]
 
February 2016
 
US Forests nationwide are feeling the heat from increasing drought and climate change, according to a new study by scientists from 14 research institutions.
 
"Over the last two decades, warming temperatures and variable precipitation have increased the severity of forest droughts across much of the continental United States," said James Clark, lead author of the study and an environmental scientist at Duke University.
 
Clark and colleagues published their paper today in the journal Global Change Biology.
 
"While the effects have been most pronounced in the West, our analysis shows virtually that all U.S. forests are now experiencing change and are vulnerable to future declines," Clark said.
 
http://www.eurekalert.org/pub_releases/2016-02/du-nau022216.php
 
https://www.nsf.gov/news/news_summ.jsp?cntn_id=132709
 
 
http://images.scienceworldreport.com/data/images/full/18391/drought-induced-forest-dieback.jpg?w=680




Revision as of 16:00, 23 February 2016

Science -- Special Issue on Forests / August 2015

http://news.sciencemag.org/plants-animals/2015/08/special-issue-forest-health-changing-world

https://youtu.be/ddmyMveokjg

Forests and woodlands cover about 20% of Earth's land surface, spanning all but the highest latitudes. In the millennia since humans dispersed across all forested continents, we have transformed large areas of natural forest. Historically, our greatest impacts were made in temperate regions, but they now extend to forests in the tropics and the boreal zone. Only a fraction of the forests present centuries ago have escaped human influence; in many regions the forest is gone, has regrown as secondary forest, or consists of managed and plantation forests. Humans have also introduced new species, including pests and pathogens of trees. Other influences — such as climate warming that causes tree species to shift geographically and anthropogenic drought that causes forest dieback — take effect more slowly...

News/Updates

Via National Science Foundation

February 2016

US Forests nationwide are feeling the heat from increasing drought and climate change, according to a new study by scientists from 14 research institutions.

"Over the last two decades, warming temperatures and variable precipitation have increased the severity of forest droughts across much of the continental United States," said James Clark, lead author of the study and an environmental scientist at Duke University.

Clark and colleagues published their paper today in the journal Global Change Biology.

"While the effects have been most pronounced in the West, our analysis shows virtually that all U.S. forests are now experiencing change and are vulnerable to future declines," Clark said.

http://www.eurekalert.org/pub_releases/2016-02/du-nau022216.php

https://www.nsf.gov/news/news_summ.jsp?cntn_id=132709


http://images.scienceworldreport.com/data/images/full/18391/drought-induced-forest-dieback.jpg?w=680

Subcategories

This category has the following 8 subcategories, out of 8 total.

B

E

F

N

R

Pages in category "Forests"

The following 70 pages are in this category, out of 70 total.

A

B

C

D

E

F

G

I

L

M

N

O

P

R

S

T

U

V

W

Media in category "Forests"

The following 200 files are in this category, out of 521 total.

(previous page) (next page)(previous page) (next page)
Retrieved from "https://greenpolicy360.net/index.php?title=Category:Forests&oldid=41850"