Dataset Information

Sub-continental-scale carbon stocks of individual trees in African drylands.

ABSTRACT: The distribution of dryland trees and their density, cover, size, mass and carbon content are not well known at sub-continental to continental scales^1-14. This information is important for ecological protection, carbon accounting, climate mitigation and restoration efforts of dryland ecosystems^15-18. We assessed more than 9.9 billion trees derived from more than 300,000 satellite images, covering semi-arid sub-Saharan Africa north of the Equator. We attributed wood, foliage and root carbon to every tree in the 0-1,000 mm year^-1 rainfall zone by coupling field data¹⁹, machine learning^20-22, satellite data and high-performance computing. Average carbon stocks of individual trees ranged from 0.54 Mg C ha^-1 and 63 kg C tree^-1 in the arid zone to 3.7 Mg C ha^-1 and 98 kg tree^-1 in the sub-humid zone. Overall, we estimated the total carbon for our study area to be 0.84 (±19.8%) Pg C. Comparisons with 14 previous TRENDY numerical simulation studies²³ for our area found that the density and carbon stocks of scattered trees have been underestimated by three models and overestimated by 11 models, respectively. This benchmarking can help understand the carbon cycle and address concerns about land degradation^24-29. We make available a linked database of wood mass, foliage mass, root mass and carbon stock of each tree for scientists, policymakers, dryland-restoration practitioners and farmers, who can use it to estimate farmland tree carbon stocks from tablets or laptops.

SUBMITTER: Tucker C

PROVIDER: S-EPMC9977681 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Sub-continental-scale carbon stocks of individual trees in African drylands.

Tucker Compton C Brandt Martin M Hiernaux Pierre P Kariryaa Ankit A Rasmussen Kjeld K Small Jennifer J Igel Christian C Reiner Florian F Melocik Katherine K Meyer Jesse J Sinno Scott S Romero Eric E Glennie Erin E Fitts Yasmin Y Morin August A Pinzon Jorge J McClain Devin D Morin Paul P Porter Claire C Loeffler Shane S Kergoat Laurent L Issoufou Bil-Assanou BA Savadogo Patrice P Wigneron Jean-Pierre JP Poulter Benjamin B Ciais Philippe P Kaufmann Robert R Myneni Ranga R Saatchi Sassan S Fensholt Rasmus R

Nature 20230301 7950

The distribution of dryland trees and their density, cover, size, mass and carbon content are not well known at sub-continental to continental scales<sup>1-14</sup>. This information is important for ecological protection, carbon accounting, climate mitigation and restoration efforts of dryland ecosystems<sup>15-18</sup>. We assessed more than 9.9 billion trees derived from more than 300,000 satellite images, covering semi-arid sub-Saharan Africa north of the Equator. We attributed wood, foliage ...[more]

PMID: 36859581

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Dataset Information

Sub-continental-scale carbon stocks of individual trees in African drylands.

Publications

Sub-continental-scale carbon stocks of individual trees in African drylands.

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