Effects of Land Use on Soil Inorganic Carbon Stocks in the Russian Chernozem

Mikhailova, Elena A.; Post, Christopher J.

doi:10.2134/jeq2005.0151

Cited by 115 publications

(74 citation statements)

References 11 publications

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“…Further, some recent studies calculated SIC as the difference between soil total carbon (STC) and SOC (e.g. Yang et al, 2010a;Mikhailova and Post, 2006). However, the proportions of carbonates in soil total carbon are usually small (Chatterjee et al, 2009), thus this method without the direct measurement of SIC could produce a large relative error.…”

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confidence: 99%

Organic and inorganic carbon in the topsoil of the Mongolian and Tibetan grasslands: pattern, control and implications

et al. 2012

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Abstract. Soil carbon (C) is the largest C pool in the terrestrial biosphere and includes both inorganic and organic components. Studying patterns and controls of soil C help us to understand and estimate potential responses of soil C to global change in the future. Here we analyzed topsoil data of 81 sites obtained from a regional survey across grasslands in the Inner Mongolia and on the Tibetan Plateau during 2006-2007, attempting to find the patterns and controls of soil inorganic carbon (SIC) and soil organic carbon (SOC). The averages of inorganic and organic carbon in the topsoil (0-20 cm) across the study region were 0.38 % and 3.63 %, ranging between 0.00-2.92 % and 0.32-26.17 % respectively. Both SIC and SOC in the Tibetan grasslands (0.51 % and 5.24 % respectively) were higher than those in the Inner Mongolian grasslands (0.21 % and 1.61 %). Regression tree analyses showed that the spatial pattern of SIC and SOC were controlled by different factors. Chemical and physical processes of soil formation drive the spatial pattern of SIC, while biotic processes drive the spatial pattern of SOC. SIC was controlled by soil acidification and other processes depending on soil pH. Vegetation type is the most important variable driving the spatial pattern of SOC. According to our models, given the acidification rate in Chinese grassland soils in the future is the same as that in Chinese cropland soils during the past two decades: 0.27 and 0.48 units per 20 yr in the Inner Mongolian grasslands and the Tibetan grasslands respectively, it will lead to a 30 % and 53 % decrease in SIC in the Inner Mongolian grasslands and the Tibetan grasslands respectively. However, negative relationship between soil pH and SOC suggests that acidification will inhibit decomposition of SOC, thus will not lead to a significant general loss of carbon from soils in these regions.

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confidence: 99%

Organic and inorganic carbon in the topsoil of the Mongolian and Tibetan grasslands: pattern, control and implications

et al. 2012

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“…grasses compared with annual crops have been known [22,25,26,29]. Increased STC at lower depths under perennial grasses and annual spring wheat was probably a result of presence of large amount of SIC in subsoil layers, as soils under dryland cropping systems in arid and semiarid regions are enriched with SIC, especially in the underlying layers [37,40]. Increased STC or SOC in underlying soil layers is beneficial for soil C sequestration, as SOC in subsoils is mineralized less than in the surface soil due to reduced microbial activity [25,26].…”

Section: Tablementioning

confidence: 99%

“…Drylands occupy 47% of the earth's total surface [38] where potential for C sequestration is substantial [39]. As management practices can influence STC, SOC, and SIC [36,36,40], using STC for measurement of total soil C sequestration instead of SOC due to management practices can substantially reduce the cost of analyzing soil samples, especially in arid and semiarid regions, because it eliminates the analysis of SIC [37]. Bronson et al [18] found that STC and STN were 11.0 Mg C ha −1 and 0.6 Mg N ha…”

Section: Introductionmentioning

confidence: 99%

Root and soil total carbon and nitrogen under bioenergy perennial grasses with various nitrogen rates

Sainju

Allen

Lenssen

et al. 2017

Biomass and Bioenergy

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As aboveground biomass of perennial grasses is harvested for feedstock or bioenergy production, root biomass C and N become primary C and N inputs for enhancing soil C and N sequestration. Information is scanty about root biomass C and N and subsequent soil C and N stocks under bioenergy perennial grasses applied with various N fertilization rates in semiarid regions. We evaluated the effect of perennial grass species and N rates on root biomass C and N and soil total C (STC) and total N (STN) stocks at the 0-120 cm depth from 2011 to 2013, 2-4 yr after grass establishment, in the northern Great Plains, USA. Perennial grasses were intermediate wheatgrass ( RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. A B S T R A C TAs aboveground biomass of perennial grasses is harvested for feedstock or bioenergy production, root biomass C and N become primary C and N inputs for enhancing soil C and N sequestration. Information is scanty about root biomass C and N and subsequent soil C and N stocks under bioenergy perennial grasses applied with various N fertilization rates in semiarid regions. We evaluated the effect of perennial grass species and N rates on root biomass C and N and soil total C (

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“…These parameters are critical for biofuel production since they affect fossil fuel inputs via nitrogen fertilizers [17], potential emissions of greenhouse gases such as nitrous oxide that counteract the greenhouse gas benefits of reduced carbon emissions [18], water quality and ecosystem services [19], and energy and economic feasibility [20]. Along with organic carbon sequestration, the long cultivation history (>100 years), continuous monoculture [21], and extensive soil amendments may have created conditions for inorganic carbon sequestration or emissions [22] in Hawaiian sugarcane soils that warrant examination. Furthermore, soil organic matter (SOM) is involved in the maintenance of soil quality, sustainability of natural and agricultural systems and the natural balance of greenhouse gases [23].…”

Section: Introductionmentioning

confidence: 99%

Soil Carbon and Nitrogen Stocks of Different Hawaiian Sugarcane Cultivars

et al. 2015

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Abstracts: Sugarcane has been widely used as a biofuel crop due to its high biological productivity, ease of conversion to ethanol, and its relatively high potential for greenhouse gas reduction and lower environmental impacts relative to other derived biofuels from traditional agronomic crops. In this investigation, we studied four sugarcane cultivars (H-65-7052, H-78-3567, H-86-3792 and H-87-4319) grown on a Hawaiian commercial sugarcane plantation to determine their ability to store and accumulate soil carbon (C) and nitrogen (N) across a 24-month growth cycle on contrasting soil types. The main study objective establish baseline parameters for biofuel production life cycle analyses; sub-objectives included (1) determining which of four main sugarcane cultivars sequestered the most soil C and (2) assessing how soil C sequestration varies among two common Hawaiian soil series (Pulehu-sandy clay loam and Molokai-clay). Soil samples were collected at 20 cm increments to depths of up to 120 cm using hand augers at the three main growth stages (tillering, grand growth, and maturity) from two experimental plots at to observe total carbon (TC), total nitrogen (TN), dissolved organic carbon (DOC) and nitrates (NO and H-87-4319 (20 kg·m −2 ) appeared to produce more accumulated carbon in both soil types.

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Effects of Land Use on Soil Inorganic Carbon Stocks in the Russian Chernozem

Cited by 115 publications

References 11 publications

Organic and inorganic carbon in the topsoil of the Mongolian and Tibetan grasslands: pattern, control and implications

Organic and inorganic carbon in the topsoil of the Mongolian and Tibetan grasslands: pattern, control and implications

Root and soil total carbon and nitrogen under bioenergy perennial grasses with various nitrogen rates

Soil Carbon and Nitrogen Stocks of Different Hawaiian Sugarcane Cultivars

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