Organic carbon pools in a Luvisol under agroforestry and conventional farming systems in the semi-arid region of Ceará, Brazil

Maia, Stoécio Malta Ferreira; Xavier, Francisco Alisson S.; Oliveira, Teógenes Senna de; Mendonça, E. S.; Filho, João Ambrósio Araújo

doi:10.1007/s10457-007-9063-8

Cited by 117 publications

(97 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results corroborated those reported by Maia et al (2007) and Heinze et al (2010), even in the case of the traditional agricultural system. The traditional soil use system tends to partly stabilize the levels of TOC and other elements at deeper depths, likely due in part to topsoil tillage (Rangel et al, 2007).…”

Section: Soil Total Organic Carbon Levels and Stockssupporting

confidence: 91%

“…These conditions result in decreased levels of C and N and, consequently, increased C-CO 2 emissions into the atmosphere and decreased N cycling (Sharma et al, 2005). Conversely, conservation systems that prioritize the organic residue input and reduced tillage, including no-tillage (Souza et al, 2009;Maia et al, 2010), agrosilvopastoral systems (Maia et al, 2007;Aguiar et al, 2010), silvopastoral systems Tonucci et al, 2011), and organic farming , have proved efficient in maintaining and sometimes raising the soil C and N levels (Maia et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Studies conducted in the semiarid region of Brazil addressed the impacts of AFSs on soil quality ; nutrient redistribution (Nogueira et al, 2008); soil, water and nutrient losses by water erosion (Aguiar et al, 2010); N fractions (Maia et al, 2008); organic C reservoirs (Maia et al, 2007); and on soil physical quality (Silva et al, 2011). These studies indicated that AFSs may be viable and sustainable alternatives for soil and water use in this region.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soil carbon and nitrogen stocks in traditional agricultural and agroforestry systems in the semiarid region of Brazil

Sacramento¹,

Araújo²,

Escobar

et al. 2013

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

SUMMARYIn the semiarid region of Brazil, inadequate management of cropping systems and low plant biomass production can contribute to reduce soil carbon (C) and nitrogen (N) stocks; therefore, management systems that preserve C and N must be adopted. This study aimed to evaluate the changes in soil C and N stocks that were promoted by agroforestry (agrosilvopastoral and silvopastoral) and traditional agricultural systems (slash-and-burn clearing and cultivation for two and three years) and to compare these systems with the natural Caatinga vegetation after 13 years of cultivation. The experiment was carried out on a typical Ortic Chromic Luvisol in the municipality of Sobral, Ceará, Brazil. Soil samples were collected (layers 0-6, 6-12, 12-20, 20-40 and 40-60 cm) with four replications. The plain, convex and concave landforms in each study situation were analyzed, and the total organic C, total N and densities of the soil samples were assessed. The silvopastoral system promoted the greatest long-term reductions in C and N stocks, while the agrosilvopastoral system promoted the smallest losses and therefore represents a sustainable alternative for soil C and N sequestration in these semiarid conditions. The traditional agricultural system produced reductions of 58.87 and 9.57 Mg ha -1 in the organic C and total N stocks, respectively, which suggests that this system is inadequate for these semiarid conditions. The organic C stocks were largest in the concave landform in the agrosilvopastoral system and in the plain landform in the silvopastoral system, while the total N values were highest in the concave landform in the native, agrosilvopastoral and silvopastoral systems.Index terms: carbon sequestration, conservation management, shifting cultivation. 0-6, 6-12, 12-20, 20-40 e 40-60 cm, em RESUMO: ESTOQUES DE CARBONO E NITROGÊNIO DO SOLO EM SISTEMAS AGRÍCOLAS TRADICIONAL E AGROFLORESTAIS NO

show abstract

Section: Soil Total Organic Carbon Levels and Stockssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil carbon and nitrogen stocks in traditional agricultural and agroforestry systems in the semiarid region of Brazil

Sacramento¹,

Araújo²,

Escobar

et al. 2013

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…Especificamente para o bioma Caatinga, os autores discutem tanto ganhos como perdas nos estoques de C e N nos diferentes usos do solo (Maia et al, , 2007Assis et al, 2010;Sousa et al, 2012), sem que haja consenso sobre a dinâmica da MOS em função da mudança de uso. Além disso, inexistem informações em solos cultivados com mamona, principalmente devido às especificidades no manejo dessa cultura.…”

Section: Introductionunclassified

Estoques de carbono e nitrogênio no solo cultivado com mamona na Caatinga

Fracetto¹,

Fracetto²,

Cerri

et al. 2012

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…Its content is proportional to the quantity of microbial biomass in soil (Lovell and Jarvis 1998) and therefore it is an important factor of potential soil fertility. Many authors consider the higher content of the labile fraction of the soil carbon (SOC) as a feature of soil quality (Ghani et al 2003, Haynes 2005, Maia et al 2007). Unfortunately, it cannot be stated that it is a steady feature of quality.…”

mentioning

confidence: 99%

Relationships between quality and quantity of soil labile fraction of the soil carbon in Cambisols after liming during a 5-year period

Kolář¹,

Vaněk²,

Kužel³

et al. 2011

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

The labile fraction of soil organic carbon (SOC) in terms of its quantity is a sensitive but dynamic indicator of the reactive agent in soils. If it is to be considered as a feature of soil quality, the value of its quantity should be completed by data on its quality. It can be expressed by the value of the rate constant of microbial oxidation k bio of this fraction or by data on chemical stability during hydrolysis or oxidation. If the quality of SOC labile fraction is not determined, at least the ratio of C MIC : C org should be given. The adjustment of soil acidity increases the microbial activity of soils, therefore the quantity of SOC labile fraction decreases and at the same time k bio decreases proportionately to the increasing stability of soil organic matters. During a 5-year period after the liming the soils acidify again and this process passes the faster the lesser their ion exchange capacity and buffering are. The quantity of the labile fraction of SOC raises again, its stability decreases and k bio raises again. The conversion pH value has secondary relevance.

show abstract

Organic carbon pools in a Luvisol under agroforestry and conventional farming systems in the semi-arid region of Ceará, Brazil

Cited by 117 publications

References 22 publications

Soil carbon and nitrogen stocks in traditional agricultural and agroforestry systems in the semiarid region of Brazil

Soil carbon and nitrogen stocks in traditional agricultural and agroforestry systems in the semiarid region of Brazil

Estoques de carbono e nitrogênio no solo cultivado com mamona na Caatinga

Relationships between quality and quantity of soil labile fraction of the soil carbon in Cambisols after liming during a 5-year period

Contact Info

Product

Resources

About