High resolution analysis of tropical forest fragmentation and its impact on the global carbon cycle

被引：197

作者：

Brinck, Katharina ^{[1
,2
]}

Fischer, Rico ^{[1
]}

Groeneveld, Juergen ^{[1
]}

Lehmann, Sebastian ^{[1
]}

De Paula, Mateus Dantas ^{[1
]}

Puetz, Sandro ^{[1
]}

Sexton, Joseph O. ^{[3
]}

Song, Danxia ^{[3
]}

Huth, Andreas ^{[1
,4
,5
]}

机构：

[1] Helmholtz Ctr Environm Res GmbH UFZ Leipzig, Dept Ecol Modelling, Permoserstr 15, D-04318 Leipzig, Germany

[2] Imperial Coll London, Dept Math, South Kensington Campus, London SW7 2AZ, England

[3] Univ Maryland, Dept Geog Sci, Global Land Cover Facil, 4321 Hartwick Bldg, College Pk, MD 20740 USA

[4] German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany

[5] Univ Osnabruck, Inst Environm Syst Res, Dept Math Comp Sci, D-49076 Osnabruck, Germany

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

基金：

欧洲研究理事会;

关键词：

HABITAT FRAGMENTATION; BIOMASS; DEFORESTATION; EMISSIONS; MAP;

D O I：

10.1038/ncomms14855

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Deforestation in the tropics is not only responsible for direct carbon emissions but also extends the forest edge wherein trees suffer increased mortality. Here we combine high-resolution (30 m) satellite maps of forest cover with estimates of the edge effect and show that 19% of the remaining area of tropical forests lies within 100m of a forest edge. The tropics house around 50 million forest fragments and the length of the world's tropical forest edges sums to nearly 50 million km. Edge effects in tropical forests have caused an additional 10.3 Gt (2.1-14.4 Gt) of carbon emissions, which translates into 0.34 Gt per year and represents 31% of the currently estimated annual carbon releases due to tropical deforestation. Fragmentation substantially augments carbon emissions from tropical forests and must be taken into account when analysing the role of vegetation in the global carbon cycle.

引用

页数：6

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