scholarly journals Supplemental Material: Climate forcing of terrestrial carbon sink during the Middle Jurassic greenhouse climate: Chronostratigraphic analysis of the Yan’an Formation, Ordos Basin, North China

2020 ◽  
Author(s):  
Zhihui Zhang ◽  
Tiantian Wang ◽  
et al.
Keyword(s):  
Middle Jurassic ◽  
North China ◽  
Carbon Sink ◽  
Ordos Basin ◽  
Climate Forcing ◽  
Terrestrial Carbon ◽  
Greenhouse Climate ◽  
Terrestrial Carbon Sink

Figures S1–S5, and Tables S1–S4.

Climate forcing of terrestrial carbon sink during the Middle Jurassic greenhouse climate: Chronostratigraphic analysis of the Yan’an Formation, Ordos Basin, North China

2020 ◽  
Author(s):  
Zhihui Zhang ◽  
Tiantian Wang ◽  
Jahandar Ramezani ◽  
Dawei Lv ◽  
Chengshan Wang
Keyword(s):  
Carbon Cycle ◽  
Middle Jurassic ◽  
Carbon Sink ◽  
Ordos Basin ◽  
Global Carbon Cycle ◽  
Central China ◽  
Terrestrial Carbon ◽  
The Ordos Basin ◽  
Terrestrial Carbon Sink ◽  
Global Carbon

Exploring the relationship between coal deposits as an important terrestrial carbon sink and orbital forcing of climate is critical for understanding the global carbon cycle and climate change. The Jurassic greenhouse period, characterized by extensive coal reserves widely distributed in the mid-latitude terrestrial basins, marks a significant coal-forming interval in Earth’s history. However, understanding of the processes that controlled the formation and distribution of coal at this time is inadequate. The Yan’an Formation of the Ordos Basin in north central China is among the largest and most extensively studied Jurassic coal reservoirs of the world. Here we establish a high-resolution age framework for the Yan’an Formation derived from integrated, high-precision U-Pb zircon geochronology using chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) on interstratified ash beds and cyclostratigraphy based on centimeter-scale magnetic susceptibility. Accordingly, the main coal-forming interval of the Yan’an Formation spanned ca. 174.0 Ma to <171.7 Ma, which coincided with the onset of the Middle Jurassic. The spectral analyses of the Yan’an Formation coal seams demonstrate a strong correlation to minima in the 405 k.y. orbital eccentricity cycles, suggesting a strong climate control on lake level fluctuations and clastic sediment input. Finally, we explore the cyclicity of a large set of published marine carbon isotope data from western Tethys and its phase relationship to cyclic coal deposition in the Ordos Basin. Our resutls underscore the role of terrestrial organic carbon burial in the global carbon cycle during the Middle Jurassic.

scholarly journals The Significance of the Erosion-induced Terrestrial Carbon Sink

BioScience ◽  
2007 ◽  
Vol 57 (4) ◽  
pp. 337-346 ◽  
Author(s):  
Asmeret Asefaw Berhe ◽  
John Harte ◽  
Jennifer W. Harden ◽  
Margaret S. Torn
Keyword(s):  
Carbon Sink ◽  
Terrestrial Carbon ◽  
Terrestrial Carbon Sink

Saturation of the Terrestrial Carbon Sink

2007 ◽  
pp. 59-78 ◽  
Author(s):  
Josep G. Canadell ◽  
Diane E. Pataki ◽  
Roger Gifford ◽  
Richard A. Houghton ◽  
Yiqi Luo ◽  
...  
Keyword(s):  
Carbon Sink ◽  
Terrestrial Carbon ◽  
Terrestrial Carbon Sink

scholarly journals Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization

2019 ◽  
Vol 12 (10) ◽  
pp. 809-814 ◽  
Author(s):  
Yongwen Liu ◽  
Shilong Piao ◽  
Thomas Gasser ◽  
Philippe Ciais ◽  
Hui Yang ◽  
...  
Keyword(s):  
Field Experiment ◽  
Carbon Sink ◽  
Terrestrial Carbon ◽  
Co2 Fertilization ◽  
Terrestrial Carbon Sink

CO2 stabilization, climate change and the terrestrial carbon sink

2000 ◽  
Vol 6 (7) ◽  
pp. 817-833 ◽  
Author(s):  
Andrew White ◽  
Melvin G. R. Cannell ◽  
Andrew D. Friend
Keyword(s):  
Climate Change ◽  
Carbon Sink ◽  
Terrestrial Carbon ◽  
Terrestrial Carbon Sink

scholarly journals Role of forest regrowth in global carbon sink dynamics

2019 ◽  
Vol 116 (10) ◽  
pp. 4382-4387 ◽  
Author(s):  
Thomas A. M. Pugh ◽  
Mats Lindeskog ◽  
Benjamin Smith ◽  
Benjamin Poulter ◽  
Almut Arneth ◽  
...  
Keyword(s):  
Land Use ◽  
Carbon Sink ◽  
Natural Disturbances ◽  
Terrestrial Carbon ◽  
Terrestrial Biosphere ◽  
Old Growth ◽  
Old Growth Forest ◽  
Forest Regrowth ◽  
Terrestrial Carbon Sink ◽  
Forest Demography

Although the existence of a large carbon sink in terrestrial ecosystems is well-established, the drivers of this sink remain uncertain. It has been suggested that perturbations to forest demography caused by past land-use change, management, and natural disturbances may be causing a large component of current carbon uptake. Here we use a global compilation of forest age observations, combined with a terrestrial biosphere model with explicit modeling of forest regrowth, to partition the global forest carbon sink between old-growth and regrowth stands over the period 1981–2010. For 2001–2010 we find a carbon sink of 0.85 (0.66–0.96) Pg year−1located in intact old-growth forest, primarily in the moist tropics and boreal Siberia, and 1.30 (1.03–1.96) Pg year−1located in stands regrowing after past disturbance. Approaching half of the sink in regrowth stands would have occurred from demographic changes alone, in the absence of other environmental changes. These age-constrained results show consistency with those simulated using an ensemble of demographically-enabled terrestrial biosphere models following an independent reconstruction of historical land use and management. We estimate that forests will accumulate an additional 69 (44–131) Pg C in live biomass from changes in demography alone if natural disturbances, wood harvest, and reforestation continue at rates comparable to those during 1981–2010. Our results confirm that it is not possible to understand the current global terrestrial carbon sink without accounting for the sizeable sink due to forest demography. They also imply that a large portion of the current terrestrial carbon sink is strictly transient in nature.

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