ADVERTISING
 
Friday, January 18   Sign in or Register
 
Evangelical Focus
 
Flecha
 
ADVERTISING
 
 
FOLLOW US ON
  • Twitter
  • Facebook
  • Google +
  • Instagram
  • Soundcloud
 

Newsletter
Newsletter, sign up to receive all our News by email.
 
 

POLL
Bible literacy
How often do you read the Bible?







SEE MORE POLLS
 

 
TOP 10 MOST VIEWED



Environment
 

World's trees have halved since civilization began

Today, the earth has approximately 3 trillion trees left, but each year more than 15 billion are lost.

SOURCES Nature, El País AUTHOR Evangelical Focus 11 SEPTEMBER 2015 19:00 h GMT+1

Using a combination of satellite and ground measurements, researchers estimated that there are just over 3 trillion trees on the planet, over seven times as many as the current, non peer-reviewed reckoning that relied on satellite images alone.



But people are having an “overwhelming” impact on the world’s forests, according to the international team from 15 countries. Human activities have led to the loss of nearly half the world’s trees (45.8%), the study found.



The results, published in the journal Nature, provide the most comprehensive assessment of tree populations ever produced and offer new insights into a class of organism that helps shape most terrestrial biomes.



“We have nearly halved the number of trees on the planet, and we have seen the impacts on climate and human health as a result”, Thomas Crowther, of Yale University, the lead author of the study, published in the journal Nature”, said. “This study highlights how much more effort is needed if we are to restore healthy forests worldwide”, he added.

Crowther affirmed that “trees are among the most prominent and critical organisms on Earth, yet we are only recently beginning to comprehend their global extent and distribution.”



 



422 TREES PER PERSON

The study was inspired by a request by Plant for the Planet, a global youth initiative that leads the United Nations Environment Programme’s “Billion Tree Campaign.”



Two years ago the group approached Crowther asking for baseline estimates of tree numbers at regional and global scales so they could better evaluate the contribution of their efforts and set targets for future tree-planting initiatives.



A previous study that drew on satellite imagery estimated that the total number of trees was about 400 billion. The new estimate of 3.04 trillion is multiple times that number, bringing the ratio of trees per person to 422 to 1.



While the density of foliage was surprisingly high overall, the researchers cautioned that global vegetation is still in decline. The number of trees on Earth has fallen by 46% since the beginning of human civilization, according to the report. The researchers said they believed the findings would provide a valuable baseline for future research on environment and ecosystems.



 



INFORMATION USEFUL FOR MANY DISCIPLINES”



“The previous information that we had about the global forest system all came from satellite images...we are using all this information to provide more detailed understanding of what’s going on below the surface”, explained Thomas Crowther.



Dr. Crowther said the findings should be useful for scientists in a variety of disciplines. Biologists will be able to use the tree density estimates to determine habitat suitability for different plants and animals.



The estimates will also be critical in assessing forests’ impact on carbon in the atmosphere in different ecosystems, as well as projecting how tree populations will be affected by future climate conditions, he said.



The highest densities of trees were found in the boreal forests in the sub-arctic regions of Russia, Scandinavia, and North America. But the largest forest areas, by far, are in the tropics, which are home to about 43% of the world’s trees. (Only 24% are in the dense boreal regions, while another 22% exist in temperate zones).


 

 


0
COMMENTS

    If you want to comment, or

 



 
 
YOUR ARE AT: - - World's trees have halved since civilization began
 
ADVERTISING
 
 
 
AUDIOS Audios
 
Julia Doxat-Purser: 25 years of EEA office in Brussels Julia Doxat-Purser: 25 years of EEA office in Brussels

An interview with the socio-political representative of the European Evangelical Alliance about how evangelical Christians work at the heart of the European Union.

 
Lars Dahle: Nominal Christianity, a mission field for the church Lars Dahle: Nominal Christianity, a mission field for the church

An interview with Lars Dahle, of the Steering Committee of the Lausanne Movement Global Consultation on Nominal Christianity held in Rome.

 
Michael Ramsden: Communicating the Gospel in today’s societies Michael Ramsden: Communicating the Gospel in today’s societies

RZIM International Director Michael Ramsden responds to questions about the secularisation of Europe, the role of Christians in public leadership and the new ‘culture of victimism’.

 
PICTURES Pictures
 
Bulgaria: Evangelicals ask government to protect religious minorities Bulgaria: Evangelicals ask government to protect religious minorities

Christians rallied in Sofia on November 18 to defend their rights. It is the second Sunday of peaceful demonstrations against a new religion draft law that could severely restrict religious freedom and rights of minority faith confessions.

 
Photos: #WalkForFreedom Photos: #WalkForFreedom

Abolitionists marched through 400 cities in 51 countries. Pictures from Valencia (Spain), October 20.

 
Photos: Reaching people with disabilities Photos: Reaching people with disabilities

Seminars, an arts exhibition, discussion and testimonies. The European Disability Network met in Tallinn.

 
VIDEO Video
 
The source of longing, according to C.S. Lewis The source of longing, according to C.S. Lewis

Jerry Root compares the search for meaning of C.S. Lewis with Saint Augustine's reflections.

 
The reliability of the Bible The reliability of the Bible

Jim Cecy, Senior Pastor, Campus Bible Church, answers the question Why is a defense of the reliability of the Bible important?

 
Bulgarian evangelicals ask politicians to defend “basic freedoms” Bulgarian evangelicals ask politicians to defend “basic freedoms”

Protests and prayers continue in Bulgaria for the sixth week.

 
That night That night

“No one came ot help that night, no nurse to numb the fright...”

 
 
Follow us on Soundcloud
Follow us on YouTube
 
 
WE RECOMMEND
 
PARTNERS
 

 
AEE
EVANGELICAL FOCUS belongs to Areópago Protestante, linked to the Spanish Evangelical Alliance (AEE). AEE is member of the European
Evangelical Alliance and World Evangelical Alliance.
 

Opinions expressed are those of their respective contributors and do not necessarily represent the views of Evangelical Focus.