Aggregate stability and organic carbon stock under different land uses integrally regulated by binding agents and chemical properties in saline‐sodic soils

A study was undertaken in Haryana to estimate Soil organic carbon stock under different orchards available there under horticulture land uses which covered 47,036 ha area in Haryana. Maximum organic carbon stock was observed under Mango (36.24 t ha-1) followed by Nebu (35.85 t ha-1), Ber (30.37 t ha-1), Guava (29.45 t ha-1), Kinnu (25.11 t ha-1), Aonla (24.67 t ha-1), Malta (24.20 t ha-1) and the least was under the combination of Aonla + Anar (14.97 t ha-1). When SOC stock under different horticulture species was tested by one - way ANOVA, it was found that SOC stock under different species was significantly different (Variance ratio, F = 4.086; p = < 0.05). SOC stock under Mango was significantly different from the SOC stock under all other species except Nebu, Malta and Grapes. Mitigation potential indicates that soils under Mango and Nebu can sequester nearly two and half times more SOC as compared to that in Aonla + Anar orchard, while the soils under Ber and Guava and Kinnu can sequester nearly double the amount of SOC stock in comparison to Aonla+ Anar orchard. Over all, in Haryana the soils under horticulture land use have 1.37 million tones of SOC stock which is equivalent to 5.05 million tons of CO2.

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Assessment of soil organic carbon stock in major land uses of arid-region of Andhra Pradesh, India

Climate Change and Environmental Sustainability ◽

10.5958/2320-642x.2020.00017.4 ◽

2020 ◽

Vol 8 (2) ◽

pp. 171

Author(s):

R. Srinivasan ◽

Rajendra Hegde ◽

S. Srinivas ◽

K.V. Niranjana ◽

R. Vasundhara ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Arid Region ◽

Carbon Stock ◽

Andhra Pradesh ◽

Land Uses ◽

Soil Organic Carbon Stock ◽

Organic Carbon Stock

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Humic Haplustox under different land uses in a high altitude environment in the Agreste region of Pernambuco, Brazil

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832014000400029 ◽

2014 ◽

Vol 38 (4) ◽

pp. 1337-1349 ◽

Cited By ~ 1

Author(s):

Jane Kelly Silva Araujo ◽

Mateus Rosas Ribeiro ◽

Marcelo Metri Corrêa ◽

Izabel Cristina de Luna Galindo ◽

Valdomiro Severino de Souza Júnior

Keyword(s):

Microbial Biomass ◽

Chemical Properties ◽

Aggregate Stability ◽

Agricultural Activity ◽

Native Forest ◽

Relative Distribution ◽

Physical And Chemical Properties ◽

Land Uses ◽

Physical And Chemical ◽

And Chemical Properties

The Garanhuns Plateau in the Agreste region of the State of Pernambuco, Brazil is characterized by humid climatic conditions due to orographic rains, unlike the surrounding semiarid region. These soils are subjected to intense agricultural use and are extremely important for the regional economy. This study was carried out in the municipality of Brejão in the Agreste region with the aim of assessing changes in humic Haplustox soils subjected to different land uses. Four plots with different vegetation covers (native forest, secondary shrubby vegetation (capoeira), traditional cropping system, and planted pasture) were selected, and samples were taken from a soil profile and four small pits surrounding it at each site. Physical and chemical properties were assessed, including aggregate stability, humic organic fractions, and a microbiological evaluation through determination of basal respiration, microbial biomass carbon, and metabolic quotient. The soils under study showed physical and chemical properties typical of a Haplustox, such as low nutrient content, low cation exchange capacity, and high levels of acidity and Al saturation. The total organic carbon (TOC) contents were high regardless of the type of land use. Aggregates < 2 mm were dominant in all the conditions under study. The TOC content was higher in the soil under capoeira, 43.91 g kg-1 on the surface, while 34.36 and 33.43 g kg-1 of TOC were observed in the first layer of forest and pasture soils, respectively. While the microbial biomass C (MBC) was greater than 700 mg kg-1 in the forest and pasture areas (in the 0-5 cm layer), and 588 mg kg-1 in the soil under capoeira, these numbers were not statistically different. In the cultivated soil area, there was a reduction of around 28 % in TOC and MBC contents. Agricultural activity contributed to degradation of the humic horizon, as can be seen from a significant decrease in the TOC and changes in the relative distribution of the humic fractions. In contrast, aggregate stability was not altered as a function of the different land uses; the soil under planted pasture and capoeira were similar to the soil under native forest. Humin was the most important humified fraction for C reserves, contributing over 40 % of the TOC in these soils.

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Soil organic carbon stock assessment for the different cropland land uses in Italy

Biology and Fertility of Soils ◽

10.1007/s00374-011-0599-4 ◽

2011 ◽

Vol 48 (1) ◽

pp. 9-17 ◽

Cited By ~ 47

Author(s):

Tommaso Chiti ◽

Lorenzo Gardin ◽

Lucia Perugini ◽

Roberta Quaratino ◽

Francesco Primo Vaccari ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Stock ◽

Stock Assessment ◽

Land Uses ◽

Soil Organic Carbon Stock ◽

Organic Carbon Stock

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Soil Structural Stability and Extracellular Polymeric Substances (EPS): transient binding agents affected by land-use.

10.5194/egusphere-egu2020-5742 ◽

2020 ◽

Author(s):

Marc Redmile-Gordon

Keyword(s):

Land Use ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Structural Stability ◽

Extracellular Polymeric Substances ◽

Aggregate Stability ◽

Land Uses ◽

Total Soil ◽

Binding Agents ◽

Soil Structural Stability

Structural stability in agricultural soils is said to be maintained through production of &#8216;biological binding agents&#8217;, including temporary binding agents (fungi, roots), transient binding agents (EPS), and persistent binding agents (of less certain origin). We sampled soils from a long-term field trial, comprising previous grassland, arable and fallow land-uses in factorial combination with current land-uses of the same type: previous 3 land-uses &#160;x current 3 land-uses = 9 treatments (Redmile-Gordon et al., 2020). Total soil organic carbon (SOC), EPS (including protein, and polysaccharide fractions; Redmile-Gordon et al., 2014), and mean weight diameter (MWD) of water stable aggregates (Le Bissonnais, 1996) were quantified.Both EPS and MWD were correlated, and were both strongly influenced by current land-use (implemented 2.5 years before sampling), but not by previous land-use (implemented > 50 years ago, terminated 2.5 years before sampling). While exopolysaccharides were significantly correlated to the soil&#8217;s structural stability (p = 0.027), proteinaceous EPS were more closely related to the associated gains in soil aggregate stability (p = 0.002).In contrast to EPS and soil stability, total soil organic carbon (SOC) was strongly influenced by previous land-use. Importantly, this indicates that any capacity for relatively stable organic matter to contribute to the soil&#8217;s structural stability is overwhelmed by temporary/transient effects owed to current land-use. This is cause for optimism, as it seems the physical quality of soils might be improved by short-term application of managements that favour EPS production. This approach would represent a qualitative step beyond that of building total SOC, which can be difficult for land-managers to achieve. This study is the first to simultaneously assess the effects of land-use on proteinaceous and polysaccharide content of EPS, and link this to the structural stability of soils. Further understanding surrounding the ecology of EPS production, and disentangling the contributions of temporary (largely physical) vs. transient (biochemical) binding agents is hoped to contribute to the development of more efficient land-management strategies.&#160;References:Le Bissonnais, Y., 1996. Aggregate stability and assessment of soil crustability and erodibility. 1. Theory and methodology. Eur. J. Soil Sci. 47, 425&#8211;437.Redmile-Gordon, M., Brookes, P.C., Evershed, R.P., Goulding, K.W.T., Hirsch, P.R., 2014. Measuring the soil-microbial interface: extraction of extracellular polymeric substances (EPS) from soil biofilms. Soil Biol. Biochem. 72, 163&#8211;171.Redmile-Gordon, M., Gregory, A.S., White, R.P., Watts, C.W. 2020. Soil organic carbon, extracellular polymeric substances (EPS), and soil structural stability as affected by previous and current land-use. Geoderma, 363. https://doi.org/10.1016/j.geoderma.2019.114143

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Comparative Assessment of Soil Organic Carbon Stock Potential under Agroforestry Practices and Other Land Uses in Lowlands of Bale

International Journal of Environment ◽

10.3126/ije.v6i3.18094 ◽

2017 ◽

Vol 6 (3) ◽

pp. 1-14

Author(s):

Bikila Mengistu ◽

Zebene Asfaw

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Stock ◽

Land Uses ◽

Soil Organic Carbon Stock ◽

Agroforestry Practice ◽

Crop Field ◽

Organic Carbon Storage ◽

Organic Carbon Stock ◽

Agroforestry Practices

Soil organic carbon is the carbon associated with soil organic matter that is made up of decomposed plant and animal materials. This study was conducted in Dallo Mena district to estimate the amount of soil carbon stock stored in shade grown coffee (SC) and homegarden agroforestry practices (HG), and adjacent natural forest (NF) and annual crop field (CF) and to show the potential of agroforestry practices in soil organic carbon storage capacity. The study site was selected based on spatial analogue approach. From each land uses nine plots were selected by using systematic sampling method following the transect line. Soil organic carbon stock (100cm depth) were the highest for the NF(170.11 ± 14.59 Mg ha-1), followed by SC(127.96 ± 9.43 Mg ha-1), HG(107.62 ± 12.55 Mg ha-1) and CF(97.56 ± 6.85 Mg ha-1). Agroforestry and other land uses of Dallo Mena districts are providing various ecological as well as economical benefits for the community. It is used as income source, conserving different plant species diversity and at the same time storing large amounts of soil organic carbon. Therefore, there is significant difference among natural forest, shade grown coffee agroforestry practice, homegarden agroforestry practice and annual crop field in soil organic carbon storage capacity.International Journal of EnvironmentVolume-6, Issue-3, Jun-Aug 2017, page: 1-14

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Organic carbon stock in some forest soils in Serbia

Glasnik Sumarskog fakulteta ◽

10.2298/gsf111230002k ◽

2012 ◽

pp. 81-98

Author(s):

Ratko Kadovic ◽

Snezana Belanovic ◽

Milan Knezevic ◽

Milorad Danilovic ◽

Olivera Kosanin ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Stock ◽

Chemical Properties ◽

National Forest Inventory ◽

Organic Carbon Content ◽

Mean Values ◽

Average Value ◽

Organic Horizons ◽

Organic Carbon Stock

The content of organic carbon (C) was researched in topsoil layers (0-20 cm) in the most represented soils of forest ecosystems in central Serbia: eutric ranker, eutric cambisol and dystric cambisol. The soils were sampled during 2003, 2004 and 2010. Laboratory analyses included the soil physical and chemical properties necessary for the quantification of the soil organic carbon in organic and mineral layers. Mean values of the soil organic carbon (SOC) stores in organic horizons of the study soils varied between: 1.01?0.4 kg(C).m-2 (dystric cambisol), 0.90?0.41 kg(C).m-2 (eutric ranker) and 0.94?0.36 kg(C).m-2 (eutric cambisol). Average values of organic carbon in mineral layers (0-20 cm) ranged between: 3.83?1.70 kg(C).m-2 (dystric cambisol), 6.26?3.41 kg(C).m-2 (eutric ranker) and 4.36?1.91 kg(C).m-2 (eutric cambisol). The average value of total organic carbon stock in the study soils (both organic and mineral layers) was 5.77 kg(C).m-2. This paper addresses the methodological aspects of regional estimation of soil organic carbon content as the potential to be applied in the National Forest Inventory Program.

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