Benchmark map of forest carbon stocks in tropical regions across three continents

被引:1534
作者
Saatchi, Sassan S. [1 ,2 ]
Harris, Nancy L. [3 ]
Brown, Sandra [3 ]
Lefsky, Michael [4 ]
Mitchard, Edward T. A. [5 ]
Salas, William [6 ]
Zutta, Brian R. [1 ,2 ]
Buermann, Wolfgang [2 ]
Lewis, Simon L. [7 ]
Hagen, Stephen [6 ]
Petrova, Silvia [3 ]
White, Lee [8 ]
Silman, Miles [9 ]
Morel, Alexandra [10 ]
机构
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[2] Univ Calif Los Angeles, Inst Environm, Los Angeles, CA 90095 USA
[3] Winrock Int Livestock Res & Training Ctr, Ecosyst Serv Unit, Arlington, VA 22202 USA
[4] Colorado State Univ, Coll Nat Resources, Ft Collins, CO 80523 USA
[5] Univ Edinburgh, Sch Geosci, Inst Geog, Edinburgh EH8 9XP, Midlothian, Scotland
[6] Appl GeoSolut, Durham, NH 03824 USA
[7] Univ Leeds, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England
[8] Agence Natl Parcs Nationaux, Republique Gabonaise 20379, BP, Gabon
[9] Wake Forest Univ, Dept Biol, Winston Salem, NC 27106 USA
[10] Univ Oxford, Environm Change Inst, Oxford OX1 3QY, England
基金
美国国家航空航天局; 美国国家科学基金会;
关键词
forest biomass; forest height; microwave and optical imaging; error propagation; carbon cycling; ABOVEGROUND LIVE BIOMASS; EMISSIONS; TERRESTRIAL; AMAZON; ROOT;
D O I
10.1073/pnas.1019576108
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
Developing countries are required to produce robust estimates of forest carbon stocks for successful implementation of climate change mitigation policies related to reducing emissions from deforestation and degradation (REDD). Here we present a "benchmark" map of biomass carbon stocks over 2.5 billion ha of forests on three continents, encompassing all tropical forests, for the early 2000s, which will be invaluable for REDD assessments at both project and national scales. We mapped the total carbon stock in live biomass (above-and belowground), using a combination of data from 4,079 in situ inventory plots and satellite light detection and ranging (Lidar) samples of forest structure to estimate carbon storage, plus optical and microwave imagery (1-km resolution) to extrapolate over the landscape. The total biomass carbon stock of forests in the study region is estimated to be 247 Gt C, with 193 Gt C stored aboveground and 54 Gt C stored belowground in roots. Forests in Latin America, sub-Saharan Africa, and Southeast Asia accounted for 49%, 25%, and 26% of the total stock, respectively. By analyzing the errors propagated through the estimation process, uncertainty at the pixel level (100 ha) ranged from +/- 6% to +/- 53%, but was constrained at the typical project (10,000 ha) and national (>1,000,000 ha) scales at ca. +/- 5% and ca. +/- 1%, respectively. The benchmark map illustrates regional patterns and provides methodologically comparable estimates of carbon stocks for 75 developing countries where previous assessments were either poor or incomplete.
引用
收藏
页码:9899 / 9904
页数:6
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