Forest degradation contributes more to carbon loss than forest cover loss in North American boreal forests

被引：1

作者：

Yu, Ling ^{[1
,2
]}

Fan, Lei ^{[1
,2
]}

Ciais, Philippe ^{[3
]}

Xiao, Jingfeng ^{[4
]}

Frappart, Frederic ^{[5
]}

Sitch, Stephen ^{[6
]}

Chen, Jingming ^{[7
]}

Xiao, Xiangming ^{[8
]}

Fensholt, Rasmus ^{[9
]}

Chang, Zhongbing ^{[10
]}

Fang, Hongqian ^{[1
,2
]}

Li, Xiaojun ^{[5
]}

Cui, Tiangxiang ^{[11
]}

Ma, Mingguo ^{[1
,2
]}

Wigneron, Jean-Pierre ^{[5
]}

机构：

[1] Southwest Univ, Sch Geog Sci, Chongqing Jinfo Mt Karst Ecosyst Natl Observat & R, Chongqing 400715, Peoples R China

[2] Southwest Univ, Chongqing Engn Res Ctr Remote Sensing Big Data App, Sch Geog Sci, Chongqing 400715, Peoples R China

[3] Univ Paris Saclay, CEA CNRS UVSQ, LSCE IPSL, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France

[4] Univ New Hampshire, Earth Syst Res Ctr, Inst Study Earth Oceans & Space, Durham, NH 03824 USA

[5] Univ Bordeaux, ISPA, UMR 1391, INRAE Nouvelle Aquitaine, F-33140 Villenave Dornon, France

[6] Univ Exeter, Coll Life & Environm Sci, Exeter EX4 4RJ, England

[7] Univ Toronto, Dept Geog, Toronto, ON M5S 3G3, Canada

[8] Univ Oklahoma, Dept Microbiol & Plant Biol, Ctr Earth Observat & Modeling, Norman, OK 73019 USA

[9] Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen, Denmark

[10] Surveying & Mapping Inst Lands & Resource, Dept Guangdong Prov, Key Lab Nat Resources Monitoring Trop & Subtrop Ar, Guangzhou 510663, Peoples R China

[11] Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210042, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2024年 / 128卷

基金：

中国国家自然科学基金;

关键词：

Canadian boreal forests; Carbon balance; Remote sensing; Forest degradation; CANADA FORESTS; BALANCE; BIOMASS; PATTERNS;

D O I：

10.1016/j.jag.2024.103729

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

The carbon sinks of North American boreal forests have been threatened by global warming and forest disturbances in recent decades, but knowledge about the carbon balance of these forests in recent years remains unknown. We tracked annual aboveground carbon (AGC) changes from 2016 to 2021 across the forest regions of NASA's Arctic Boreal Vulnerability Experiment (ABoVE) core study domain, using Vegetation Optical Depth derived from low-frequency passive microwave observations. The results showed that these forests showed a net AGC increase of + 28.49 Tg C/yr during the study period, with total AGC gains of + 219.34 Tg C/yr counteracting total AGC losses of -190.86 Tg C/yr. Forest degradation (-162.21 Tg C/yr), defined as a reduction in the capacity of forest to provide goods and services, contributes 5 times more to the total AGC loss than forest cover loss (-28.65 Tg C/yr), defined as the complete removal of tree cover. This indicates that degradation has dominated AGC loss in the region.

引用

页数：10

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