Geographical Regularities in Productivity and the Circulation of Chemical Elements in the Earth's Main Vegetation Types

Bazilevich, N. I.; Rodin, L. Ye.

doi:10.1080/00385417.1971.10770213

Cited by 17 publications

(5 citation statements)

References 2 publications

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“…Both ESM2M (141 PgC yr 21 ) and ESM2G (143 PgC yr 21 ) estimates fall between these more recent studies. The global biomass in both models (1044 PgC in ESM2M and 838 PgC in ESM2G) compares well to preindustrial estimates of 924-1080 PgC (Bazilevich and Rodin 1971;Adams et al 1990). The Siegenthaler and Sarmiento (1993) biomass incorporates significant historical land use and is expected to be lower than preindustrial estimates.…”

Section: G Atmospheric Co 2 Variabilitymentioning

confidence: 73%

GFDL’s ESM2 Global Coupled Climate–Carbon Earth System Models. Part II: Carbon System Formulation and Baseline Simulation Characteristics*

et al. 2013

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The authors describe carbon system formulation and simulation characteristics of two new global coupled carbon-climate Earth System Models (ESM), ESM2M and ESM2G. These models demonstrate good climate fidelity as described in part I of this study while incorporating explicit and consistent carbon dynamics. The two models differ almost exclusively in the physical ocean component; ESM2M uses the Modular Ocean Model version 4.1 with vertical pressure layers, whereas ESM2G uses generalized ocean layer dynamics with a bulk mixed layer and interior isopycnal layers. On land, both ESMs include a revised land model to simulate competitive vegetation distributions and functioning, including carbon cycling among vegetation, soil, and atmosphere. In the ocean, both models include new biogeochemical algorithms including phytoplankton functional group dynamics with flexible stoichiometry. Preindustrial simulations are spun up to give stable, realistic carbon cycle means and variability. Significant differences in simulation characteristics of these two models are described. Because of differences in oceanic ventilation rates, ESM2M has a stronger biological carbon pump but weaker northward implied atmospheric CO 2 transport than ESM2G. The major advantages of ESM2G over ESM2M are improved representation of surface chlorophyll in the Atlantic and Indian Oceans and thermocline nutrients and oxygen in the North Pacific. Improved tree mortality parameters in ESM2G produced more realistic carbon accumulation in vegetation pools. The major advantages of ESM2M over ESM2G are reduced nutrient and oxygen biases in the southern and tropical oceans.

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Section: G Atmospheric Co 2 Variabilitymentioning

confidence: 73%

GFDL’s ESM2 Global Coupled Climate–Carbon Earth System Models. Part II: Carbon System Formulation and Baseline Simulation Characteristics*

et al. 2013

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“…The global total modeled equilibrium biomass is about 850 GtC, which is in the range of other DGVM simulations of 558–923 GtC [ Kucharik et al , 2000; Krinner et al , 2005; Sitch et al , 2003], and is below “prehistoric” estimates of 924–1080 GtC [ Bazilevich and Rodin , 1971; Adams et al , 1990]. We compared simulated biomass (vegetation carbon) to estimates from the data set of Major World Ecosystem Complexes Ranked by Carbon in Live Vegetation [ Olson et al , 1985; Gibbs , 2006].…”

Section: Resultsmentioning

confidence: 99%

Carbon cycling under 300 years of land use change: Importance of the secondary vegetation sink

Shevliakova

Pacala

Malyshev

et al. 2009

Global Biogeochemical Cycles

383

397

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[1] We have developed a dynamic land model (LM3V) able to simulate ecosystem dynamics and exchanges of water, energy, and CO 2 between land and atmosphere. LM3V is specifically designed to address the consequences of land use and land management changes including cropland and pasture dynamics, shifting cultivation, logging, fire, and resulting patterns of secondary regrowth. Here we analyze the behavior of LM3V, forced with the output from the Geophysical Fluid Dynamics Laboratory (GFDL) atmospheric model AM2, observed precipitation data, and four historic scenarios of land use change for 1700-2000. Our analysis suggests a net terrestrial carbon source due to land use activities from 1.1 to 1.3 GtC/a during the 1990s, where the range is due to the difference in the historic cropland distribution. This magnitude is substantially smaller than previous estimates from other models, largely due to our estimates of a secondary vegetation sink of 0.35 to 0.6 GtC/a in the 1990s and decelerating agricultural land clearing since the 1960s. For the 1990s, our estimates for the pastures' carbon flux vary from a source of 0.37 to a sink of 0.15 GtC/a, and for the croplands our model shows a carbon source of 0.6 to 0.9 GtC/a. Our process-based model suggests a smaller net deforestation source than earlier bookkeeping models because it accounts for decelerated net conversion of primary forest to agriculture and for stronger secondary vegetation regrowth in tropical regions. The overall uncertainty is likely to be higher than the range reported here because of uncertainty in the biomass recovery under changing ambient conditions, including atmospheric CO 2 concentration, nutrients availability, and climate.

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“…So far, there were relatively few direct measurements of biomass storage and productivity of plant communities in wetland ecosystems of Western Siberia, especially in its forest-steppe region [28][29][30]. Also, there are a number of studies made in the south boreal (taiga) region [31][32][33][34][35][36] and in other regions of Western Siberia [9,[37][38][39].…”

Section: Introductionmentioning

confidence: 99%

The Bogs in a Forest–Steppe Region of Western Siberia: Plant Biomass and Net Primary Production (NPP)

Kosykh,

Koronatova,

Mironycheva-Tokareva

et al. 2023

Water

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Hereby, we report the new experimental data of plant biomass and biological productivity (net primary production, NPP) of wetland/peatland plant communities of oligotrophic bogs located on the same latitude, but at a distance of 1300 km west-east in the forest–steppe region of Western Siberia. The data were collected by implementing direct in situ measurements based on a unique methodology developed by authors. The study revealed that the values of net primary production (NPP) are basically constrained by the live fraction of plant biomass (or phytomass). It also revealed that the dead fraction of plant biomass (mortmass), along with the live fraction of biomass (phytomass) and net primary production (NPP), all major components of the carbon cycle, differ significantly at the two study sites. The values of dead biomass (mortmass), live biomass (phytomass) and net primary production (NPP) were found at significantly higher values in bog ecosystems studied in western regions than in those of the eastern regions.

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Geographical Regularities in Productivity and the Circulation of Chemical Elements in the Earth's Main Vegetation Types

Cited by 17 publications

References 2 publications

GFDL’s ESM2 Global Coupled Climate–Carbon Earth System Models. Part II: Carbon System Formulation and Baseline Simulation Characteristics*

GFDL’s ESM2 Global Coupled Climate–Carbon Earth System Models. Part II: Carbon System Formulation and Baseline Simulation Characteristics*

Carbon cycling under 300 years of land use change: Importance of the secondary vegetation sink

The Bogs in a Forest–Steppe Region of Western Siberia: Plant Biomass and Net Primary Production (NPP)

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