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Reforestation can sequester two petagrams of carbon in US topsoils in a century

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3];  [4];  [5];  [2];  [6]
  1. Univ. of Michigan, Pellston, MI (United States). Biological Station; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Ecology and Evolutionary Biology
  2. US Dept. of Agriculture-Forest Service (USDA)., St. Paul, MN (United States). Northern Research Station
  3. Univ. of Michigan, Pellston, MI (United States). Biological Station; Cornell Univ., Ithaca, NY (United States). Baker Lab., Dept. of Natural Resources
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Environmental Science Division
  5. S Dept. of Agriculture-Forest Service (USDA)., St. Paul, MN (United States). Northern Research Station
  6. US Dept. of Agriculture-Forest Service (USDA)., Houghton, MI (United States). Northern Research Station
Soils are Earth’s largest terrestrial carbon (C) pool, and their responsiveness to land use and management make them appealing targets for strategies to enhance C sequestration. Numerous studies have identified practices that increase soil C, but their inferences are often based on limited data extrapolated over large areas. Here in this paper, we combine 15,000 observations from two national-level databases with remote sensing information to address the impacts of reforestation on the sequestration of C in topsoils (uppermost mineral soil horizons). We quantify C stocks in cultivated, reforesting, and natural forest topsoils; rates of C accumulation in reforesting topsoils; and their contribution to the US forest C sink. Our results indicate that reforestation increases topsoil C storage, and that reforesting lands, currently occupying >500,000 km2 in the United States, will sequester a cumulative 1.3–2.1 Pg C within a century (13–21 Tg C·y-1). Annually, these C gains constitute 10% of the US forest sector C sink and offset 1% of all US greenhouse gas emission
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDA. Forest Service - Northern Research Station; USDOE Office of Science
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1429070
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 11 Vol. 115; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Recovery of forest carbon density and carbon storage in a soil-degraded landscape in southeastern China journal February 2019
Losses of mineral soil carbon largely offset biomass accumulation 15 years after whole-tree harvest in a northern hardwood forest journal May 2019
The role of reforestation in carbon sequestration journal July 2018
Carbon emissions from cropland expansion in the United States journal April 2019
Forest Management for Carbon Sequestration and Climate Adaptation journal November 2019
Response to Comments on “The global tree restoration potential” journal October 2019
Edible Microorganisms—An Overlooked Technology Option to Counteract Agricultural Expansion journal May 2019
Changes in Soil Microbial Biomass, Community Composition, and Enzyme Activities After Half-Century Forest Restoration in Degraded Tropical Lands journal December 2019

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