Carbon and nitrogen sequestration in soils under different management in the semi-arid Pampa (Argentina)

Álvarez, Carolina; Álvarez, Carina Rosa; Costantini, A.; Basanta, M.

doi:10.1016/j.still.2014.04.005

Cited by 45 publications

(13 citation statements)

References 26 publications

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“…The beneficial effects of conservation tillage for soil carbon sequestration have had significant influence on the development of agriculture in arid areas (Alvarez, Alvarez, Costantini, & Basanta, ; Hou, Li, Jia, & Han, ). The transition from the traditional tillage system to the conservation tillage system is very necessary.…”

Section: Introductionmentioning

confidence: 99%

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Wang

Zhang

et al. 2018

Land Degrad Dev

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Soil organic carbon (SOC) is a core indicator of soil quality. A proper tillage system can improve SOC accumulation and benefit land restoration. This improvement is especially significant in loess soil, which is undergoing serious degradation in China. In this study, we chose a field that was used for crop production and used a traditional moldboard plow with crop residue removal (CT) for over 10 years. We then carried out a long-term field experiment (2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015) and changed the tillage system from a moldboard plow with crop residue removal to either a moldboard plow with buried straw system (BT), a no-tillage with straw mulch system (NT), or a subsoiling with straw mulch system (ST) to evaluate the effect of tillage system change and the effects of tillage systems on SOC storage. Tillage system change influenced SOC content, NT, ST, and BT showed higher values of SOC content and increased 8.34, 7.83, and 1.64 Mg·C·ha −1 , respectively, compared with CT. Among the 3 changed tillage systems, NT and ST showed a 12.5% and 11.6% increase in SOC content then BT, respectively. Tillage system change influenced SOC stratification ratio values, with higher value observed in BT and NT compared CT but ST. Therefore, in loess soil, changing tillage system can significantly improve SOC storage and change profile distribution. The NT and ST treatments showed a more marked SOC increase, but the increase value in stratification ratio with NT still needs attention, and our results is meaningful for soil quality improvement and land restoration.

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Section: Introductionmentioning

confidence: 99%

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Wang

Zhang

et al. 2018

Land Degrad Dev

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“…On the other hand, the no-till system (NTS) has increasing the TOC and humic substances of the soil by using soil tillage only in the plant row and maintenance of vegetation cover (CAMPOS et al, 2013; DORADO; ALMENDROS; GONZÁLEZ-VILA, 2016). The use of grasses in NTS increases the straw production and thus, the soil carbon and nitrogen contents, especially in crops intercropped with legumes (ALVAREZ et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Organic Matter Fractions of an Irrigated Oxisol Under No-Till and Conventional Tillage in the Brazilian Semi-Arid Region

et al. 2017

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-The replacement of natural vegetation by crop systems directly impacts the soil organic matter fractions. The objective of this study was to evaluate the total organic carbon (TOC) and nitrogen (TN) contents in different fractions of the soil organic matter (SOM) of an Oxisol of the Brazilian semiarid region under different irrigated crops and different soil management systems. Seven treatments were evaluated, which consisted of two soil management systems (no-till and conventional tillage) and three crops (maize, sunflower and sorghum), using as reference the soil under a native forest (NF). The summer crops preceded common bean crops in the autumn-winter. The total organic carbon content, total nitrogen, carbon content in humic substances and their constituents (fulvic acids, humic acids and humin) and labile, non-labile and water-soluble carbon contents were evaluated two years and three months after the experiment implementation to determine the carbon lability (L) lability index (LI), partitioning index (CPI) and management index (CMI). The greatest carbon, nitrogen and organic matter contents in the soil surface layer (0.00-0.05 m) were found in crops under no-till system (NTS), especially maize. The crops under NTS presented greater carbon content in humic substances than the conventional tillage system (CTS) ones in the layer 0.05-0.10 m. The crops under NTS presented greater sustainability in the Brazilian semiarid region compared with those under CTS, as shown by their higher CMI in the soil surface layer.Keywords: Humic substances. Labile carbon. Sustainability. FRAÇÕES DA MATÉRIA ORGÂNICA EM LATOSSOLO IRRIGADO NO SEMIÁRIDO SOB PLANTIO DIRETO E PREPARO CONVENCIONALRESUMO -A substituição da vegetação natural pela agricultura impacta diretamente as frações da matéria orgânica no solo. Este estudo avaliou os teores de carbono orgânico total (COT) e nitrogênio total (NT) nas frações da matéria orgânica do solo (MOS) em um Latossolo do semiárido brasileiro sob diferentes sistemas de manejo com diferentes culturas irrigadas. Os sete tratamentos foram compostos por dois sistemas de manejo do solo (plantio direto e convencional) e três culturas: sorgo, girassol e milho tendo como referência o solo sob mata nativa (MN). A semeadura das culturas no verão precedeu a semeadura de feijão no outono/inverno. Após dois anos e três meses de implantação, avaliaram-se os teores de carbono orgânico total, nitrogênio total, teor de carbono nas substâncias húmicas e seus constituintes (fração ácidos fúlvicos, húmicos e humina), teores de carbono lábil, carbono não-lábil e carbono solúvel em água, sendo determinados a labilidade (L), índice de labilidade (IL), índice de compartimento de carbono (ICC) e índice de manejo de carbono (IMC). Os cultivos sob sistema de plantio direto (SPD) nas condições semiáridas, em especial com o milho, promoveram maiores teores de carbono, nitrogênio e frações da matéria orgânica, na camada superficial do solo (0,00 a 0,05 m). Na camada de 0,05-0,10 m os cultivos sob SPD promoveram ...

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“…It is estimated that globally more carbon is potentially stored in grasslands than in forests, and grasslands continuously sequester carbon [26]. Grasses have also been found to contribute more than legumes to soil carbon stocks and to sequester similar amounts of soil carbon compared to native forests in subtropical climate or even woodlands in comparable semi-arid climate [27][28][29]. However, the encroachment of cropping activities into grasslands significantly reduces this grass carbon storage capacity while the reversal of land use from cropland (tree plantations) to grassland was found to enhance soil organic carbon sequestration in a semiarid area [30,31].…”

Section: Effects Of Land Use On Soil Organic Carbonmentioning

confidence: 99%

Changes in Soil Organic Carbon Stock Under Different Land Use Types in Semiarid Borana Rangelands: Implications for CO2 Emission Mitigation in the Rangelands

Shiferaw¹,

Yimer²,

Tuffa³

2019

J Agri Sci Food Res

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Understanding the impact of land use change on soil organic carbon stock following the conversion of a semiarid rangeland into different land use types is essential to devise an appropriate and sustainable rangeland management strategy. However, there is a knowledge gap as to the impact of currently ongoing land use changes on soil organic carbon stock, which is an important rangeland ecosystem service, particularly in the face of climate change. Thus, this study was conducted to assess the effect of land use change on soil organic carbon stock in three land use types, namely, enclosures, communal grazing and cultivated lands in Borana rangeland. The result indicated that there were significant interactions between land use types and depths for soil organic carbon stock (p<0.0001) and bulk density (p=0.0055) with mean losses of 60% and 69% in soil organic carbon stock from the surface layer (0-10 cm) of communal and cultivated lands, respectively, as compared to enclosure land use type. The results indicated that communal grazing and crop cultivation in the Borana rangeland resulted in significantly decreased soil organic carbon stock. Hence, the current trend must be curbed to put back the system on its right track of resilience and sustainability for its long-term benefit and to mitigate the unprecedented increase in CO 2. Therefore, the results of this study would be useful for the improvement of land use management in the future.

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Carbon and nitrogen sequestration in soils under different management in the semi-arid Pampa (Argentina)

Cited by 45 publications

References 26 publications

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Organic Matter Fractions of an Irrigated Oxisol Under No-Till and Conventional Tillage in the Brazilian Semi-Arid Region

Changes in Soil Organic Carbon Stock Under Different Land Use Types in Semiarid Borana Rangelands: Implications for CO2 Emission Mitigation in the Rangelands

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