Mapping tree density at a global scale

doi:10.1038/nature14967

CORC > 北京大学 > 城市与环境学院

	Mapping tree density at a global scale
	Crowther, T. W. ; Glick, H. B. ; Covey, K. R. ; Bettigole, C. ; Maynard, D. S. ; Thomas, S. M. ; Smith, J. R. ; Hintler, G. ; Duguid, M. C. ; Amatulli, G. ; Tuanmu, M.N. ; Jetz, W. ; Salas, C. ; Stam, C. ; Piotto, D. ; Tavani, R. ; Green, S. ; Bruce, G. ; Williams, S. J. ; Wiser, S. K. ; Huber, M. O. ; Hengeveld, G. M. ; Nabuurs, G.J. ; Tikhonova, E. ; Borchardt, P. ; Li, C.F. ; Powrie, L. W. ; Fischer, M. ; Hemp, A. ; Homeier, J. ; Cho, P. ; Vibrans, A. C. ; Umunay, P. M. ; Piao, S. L. ; Rowe, C. W. ; Ashton, M. S. ; Crane, P. R. ; Bradford, M. A.
刊名	NATURE
	2015
关键词	CLIMATE-CHANGE FORESTS BIOMASS DEFORESTATION MAP
DOI	10.1038/nature14967
英文摘要	The global extent and distribution of forest trees is central to our understanding of the terrestrial biosphere. We provide the first spatially continuous map of forest tree density at a global scale. This map reveals that the global number of 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 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.; Yale Climate and Energy Institute; British Ecological Society; Chilean research grants FONDECYT [1151495]; National Science Foundation; Center for Tropical Forest Science; Smithsonian Tropical Research Institute; John D. and Catherine T. MacArthur Foundation; Mellon Foundation; Small World Institute Fund; Ucross High Plains Stewardship Initiative; SCI(E); PubMed; ARTICLE; thomas.crowther11@gmail.com; 7568; 201-+; 525
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416330]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Crowther, T. W.,Glick, H. B.,Covey, K. R.,et al. Mapping tree density at a global scale[J]. NATURE,2015.
APA	Crowther, T. W..,Glick, H. B..,Covey, K. R..,Bettigole, C..,Maynard, D. S..,...&Bradford, M. A..(2015).Mapping tree density at a global scale.NATURE.
MLA	Crowther, T. W.,et al."Mapping tree density at a global scale".NATURE (2015).