4.2 Article

Predicting a ceiling for soil carbon sequestration on variable landscapes under no-till in eastern Canada

Journal

CANADIAN JOURNAL OF SOIL SCIENCE
Volume 88, Issue 5, Pages 775-785

Publisher

CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.4141/CJSS07064

Keywords

Erosion; C capacity; saturation ratio; spatial variability; C sequestration

Categories

Funding

  1. Agriculture and Agri-Food Canada (t
  2. Natural Sciences and Engineering Research Council of Canada

Ask authors/readers for more resources

Chan, C., Kay, B. D. and Gregorich, E. G. 2008. Predicting a ceiling for soil carbon sequestration on variable landscapes under no-till in eastern Canada. Can. J. Soil Sci. 88: 775-785. Much of the crop production in eastern Canada occurs on landscapes where erosion/deposition has occurred. The potential to sequester C by reducing tillage will be greatest in those parts of landscapes where the organic carbon (OC) stocks are below a ceiling (OCc). However, the physical/biochemical basis for OCc is not understood and therefore it is difficult to predict where C sequestration will occur in landscapes with variable topography. In this research we tested two hypotheses proposed as the physical/biochemical basis for OCc: (1) OCc coincides with the steady state OC (OCss) stocks oil non-eroded sites and (2) OCc coincides with a critical proportion of the capacity of the clay and silt fraction to absorb and retain OC (i.e., a critical saturation ratio). Comparison of data from sites with level and variable topography disproved the first hypothesis; OC stocks on level sites were, on average, 14 Mg ha(-1) larger than OCc 15 yr after implementing no-till (NT) on variable landscapes. Further analyses of data from sites with variable topography indicated the saturation ratio in the surface 10 cm of soil must be less than 0.45 before NT results in C sequestration in the profile. Although the analyses are not incompatible with the second hypothesis, the critical saturation ratio is Surprisingly small compared with values obtained from level sites. Additional tests of the second hypothesis are warranted on sites with variable topography in which C sequestration has been documented.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.2
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Soil Science

Infrared spectroscopy estimation methods for water-dissolved carbon and amino sugars in diverse Canadian agricultural soils

Lei Zhang, Xueming Yang, Craig Drury, Martin Chantigny, Edward Gregorich, Jim Miller, Shabtai Bittman, W. Dan Reynolds, Jingyi Yang

CANADIAN JOURNAL OF SOIL SCIENCE (2018)

Article Soil Science

Effects of a one-time application of bentonite on soil enzymes in a semi-arid region

Junzhen Mi, Edward G. Gregorich, Shengtao Xu, Neil B. McLaughlin, Jinghui Liu

CANADIAN JOURNAL OF SOIL SCIENCE (2018)

Article Soil Science

No-tillage with continuous maize cropping enhances soil aggregation and organic carbon storage in Northeast China

Yan Zhang, Xiujun Li, Edward G. Gregorich, Neil B. McLaughlin, Xiaoping Zhang, Yafei Guo, Aizhen Liang, Ruqin Fan, Bingjie Sun

GEODERMA (2018)

Article Soil Science

Isolating organic carbon fractions with varying turnover rates in temperate agricultural soils - A comprehensive method comparison

Christopher Poeplau, Axel Don, Johan Six, Michael Kaiser, Dinesh Benbi, Claire Chenu, M. Francesca Cotrufo, Delphine Derrien, Paola Gioacchini, Stephanie Grand, Edward Gregorich, Marco Griepentrog, Anna Gunina, Michelle Haddix, Yakov Kuzyakov, Anna Kuehnel, Lynne M. Macdonald, Jennifer Soong, Sylvain Trigalet, Marie-Liesse Vermeire, Pere Rovira, Bas van Wesemael, Martin Wiesmeier, Sabina Yeasmin, Ilya Yevdokimov, Rolf Nieder

SOIL BIOLOGY & BIOCHEMISTRY (2018)

Article Environmental Sciences

Geochemical stability of acid-generating pyrrhotite tailings 4 to 5 years after addition of oxygen-consuming organic covers

S. Beauchemin, J. S. Clemente, Y. Thibault, S. Langley, E. G. Gregorich, B. Tisch

SCIENCE OF THE TOTAL ENVIRONMENT (2018)

Article Soil Science

Surface and subsurface N2O losses from dairy cropping systems

Jessica Quesnel, Andrew C. VanderZaag, Anna Crolla, Christopher Kinsley, Edward G. Gregorich, Claudia Wagner-Riddle

NUTRIENT CYCLING IN AGROECOSYSTEMS (2019)

Article Soil Science

Evaluating storage and pool size of soil organic carbon in degraded soils: Tillage effects when crop residue is returned

Yan Zhang, Xiujun Li, Edward G. Gregorich, Neil B. McLaughlin, Xiaoping Zhang, Yafei Guo, Yan Gao, Aizhen Liang

SOIL & TILLAGE RESEARCH (2019)

Article Soil Science

Warming effects on carbon dynamics and microbial communities in soils of diverse texture

Sandra F. Yanni, Bobbi L. Helgason, H. Henry Janzen, Benjamin H. Ellert, Edward G. Gregorich

SOIL BIOLOGY & BIOCHEMISTRY (2020)

Article Soil Science

Climate, carbon content, and soil texture control the independent formation and persistence of particulate and mineral-associated organic matter in soil

Michelle L. Haddix, Edward G. Gregorich, Bobbi L. Helgason, Henry Janzen, Benjamin H. Ellert, M. Francesca Cotrufo

GEODERMA (2020)

Article Biodiversity Conservation

Long-term geothermal warming reduced stocks of carbon but not nitrogen in a subarctic forest soil

Tino Peplau, Julia Schroeder, Edward Gregorich, Christopher Poeplau

Summary: The study used a geothermal gradient in Canada to investigate the warming effects on soil organic matter in a forest ecosystem, finding that soil organic carbon responded similarly to warming in both topsoil and subsoil. There was a negative relationship between soil temperature and whole-profile SOC stocks, with the largest share of total SOC losses coming from POM-C. Losses in N were not observed, indicating a redistribution with accumulation in the silt and clay fraction.

GLOBAL CHANGE BIOLOGY (2021)

Article Environmental Sciences

Unexpected microbial metabolic responses to elevated temperatures and nitrogen addition in subarctic soils under different land uses

J. Schroeder, Tino Peplau, Edward Gregorich, Christoph C. Tebbe, Christopher Poeplau

Summary: Subarctic regions are greatly affected by global warming, but the sensitivity to temperature and nitrogen addition is not land use-dependent. Short-term warming increases microbial carbon use efficiency (CUE), while nitrogen addition decreases CUE.

BIOGEOCHEMISTRY (2022)

Article Biodiversity Conservation

Subarctic soil carbon losses after deforestation for agriculture depend on permafrost abundance

Tino Peplau, Julia Schroeder, Edward Gregorich, Christopher Poeplau

Summary: The study found that the warming caused by climate change in the northern circumpolar permafrost region has allowed agricultural production to expand, leading to the conversion of forests to arable land. This conversion has resulted in the loss of soil organic carbon (SOC) that was previously protected by frozen ground. The interaction between permafrost abundance and deforestation on SOC stocks has been poorly studied. The study sampled soils from both permafrost and non-permafrost areas to assess the impact of land-use change on SOC stocks. It found that the conversion of permafrost-affected forest soils to cropland and grassland resulted in significant SOC losses, while sites without permafrost did not show significant changes. The fate of SOC after land-use change depended on the abundance of permafrost, with climate conditions playing a major role. The study suggests that considering the initial conditions of forest soils is important to minimize climate impact in regions with discontinuous permafrost.

GLOBAL CHANGE BIOLOGY (2022)

Article Soil Science

Deforestation for agriculture increases microbial carbon use efficiency in subarctic soils

Julia Schroeder, Tino Peplau, Frank Pennekamp, Edward Gregorich, Christoph C. Tebbe, Christopher Poeplau

Summary: The study found that land-use conversion significantly increased microbial carbon use efficiency, with soil pH increase and C:N ratio decrease playing important roles, rather than changes in microbial community composition.

BIOLOGY AND FERTILITY OF SOILS (2022)

Article Environmental Studies

Farmers' Perspective on Agriculture and Environmental Change in the Circumpolar North of Europe and America

Christopher Poeplau, Julia Schroeder, Ed Gregorich, Irina Kurganova

Article Agronomy

Tillage and crop rotation effects on the yield of corn, soybean, and wheat in eastern Canada

M. J. Morrison, E. R. Cober, E. G. Gregorich, H. D. Voldeng, B. Ma, G. C. Topp

CANADIAN JOURNAL OF PLANT SCIENCE (2018)

No Data Available