Crowther, T. & et, a. (2015): <b>Mapping tree density at a global scale</b>. <i>Nature</i> <b>525</b>(7568), 201-205.
Resource Description
Title:
Mapping tree density at a global scale
FOR816dw ID:
1491
Publication Date:
2015-09-10
License and Usage Rights:
PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
Resource Owner(s):
Individual:
TW Crowther
Contact:
email:
webmaster <at> tropicalmountainforest.org
Individual:
al et
Contact:
email:
webmaster <at> tropicalmountainforest.org
Abstract:
The global extent and distribution of forest trees is central to our understanding of the terrestrial biosphere. We provide the first spatially continuousmap of forest tree density at a global scale. This mapreveals that the global numberof trees is approximately 3.04 trillion, an order of magnitude higher than the previous estimate. Of these trees, approximately 1.39 trillion exist in tropical and subtropical forests, with 0.74 trillion in boreal regions and 0.61 trillion in temperate<br/>
regions. Biome-level trends in tree density demonstrate the importance of climate and topography in controlling local tree densities at finer scales, as well as the overwhelming effect of humans across most of the world. Based on our projected tree densities, we estimate that over 15 billion trees are cut down each year, and the global number of trees has fallen by approximately 46% since the start of human civilization.
Keywords:
| tree density |
Literature type specific fields:
ARTICLE
Journal:
Nature
Volume:
525
Issue:
7568
Page Range:
201-205
Metadata Provider:
Individual:
Jürgen Homeier
Contact:
email:
jhomeie <at> gwdg.de
Faculty of Resource Management
University of Applied Sciences and Arts (HAWK)
37077 Göttingen
Germany
