Evaluation of carbon accrual in afforested agricultural soils

Morris, Sherri J.; Bohm, Susan; Haile-Mariam, S.; Paul, Eldor A.

doi:10.1111/j.1365-2486.2007.01359.x

Cited by 121 publications

(74 citation statements)

References 41 publications

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“…Consistently with our data, in other studies soil N concentration in the shallow layer was lower in agricultural lands than in Betula and Larix thinned closed canopy plantations and in Populus stands (Ritter et al, 2007;Sartori et al, 2007). Lower soil N was also detected in agricultural lands than in deciduous forests by Morris et al (2007). By contrast, soil N decreases were reported under Pinus and Eucalyptus afforestations (Binkley and Resh, 1999;Berthrong et al, 2009).…”

Section: Chemical Parameterssupporting

confidence: 80%

Changes in Soil Quality Following Poplar Short-Rotation Forestry Under Different Cutting Cycles

Bene

Pellegrino²,

Tozzini³

et al. 2011

Italian Journal of Agronomy

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In the last decade, the change of energy concept induced by global warming and fossil fuel depletion together with the advances in agriculture towards a multifunctional and a more sustainable use of rural areas promoted the development of biomass crops. In this regard, Populus is largely utilised in short-rotation forestry (SRF), as it is known to be a fast-growing tree, producing large yields and having a high energy potential. Most studies focused on economic-productive and energetic aspects of Populus plantations, whereas their impact on soil quality and health have been poorly investigated. In this study, the main soil chemical parameters, microbial biomass and activity were assessed aiming at evaluating the impact of Populus SRF under one, two and three-year cutting cycles (T1, T2 and T3) in comparison with an intensive food cropping system (wheat-soybean rotation, WS). In addition, arbuscular mycorrhizal (AM) fungal inoculum potential was measured using root colonisation (RC) and number of entry points (EP). In the 0-10 cm soil depth, pH, phosphorus (P), total nitrogen (N) and soil organic carbon (SOC) were significantly affected by the management. In comparison with WS, Populus SRF treatments produced significant pH decreases together with N and SOC increases, these last ones ranging from 11% to 34% and from 21% to 57%, respectively. Under T3 soil pH decreased of 0.25 units, while P, N and SOC increased of 10%, 34% and 57%, respectively, in comparison with WS. Microbial biomass and soil respiration under SRF showed also mean increases of 71% and 17%, respectively. Under SRF treatments, Lolium perenne, commonly observed in all field plots, was more than twofold colonised by AM fungi in comparison with WS, while the number of EP, observed on Lactuca sativa used as a test plant, showed values ranging from 8 to 21 times higher. The present study shows the potential of a Populus SRF to improve soil chemical, biochemical and biological quality parameters in comparison with an intensive food cropping system.

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Section: Chemical Parameterssupporting

confidence: 80%

Changes in Soil Quality Following Poplar Short-Rotation Forestry Under Different Cutting Cycles

Bene

Pellegrino²,

Tozzini³

et al. 2011

Italian Journal of Agronomy

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“…In addition to the influence that the chemical composition of plant residues has on the process of decomposition and incorporation of SOM, Morris et al (2007) showed that soil characteristics have a strong influence on the dynamics of carbon accumulation. Those authors found that the availability of calcium and nitrogen were strongly associated with higher carbon storage in soil.…”

Section: Introductionmentioning

confidence: 99%

Clay content drives carbon stocks in soils under a plantation of Eucalyptus saligna Labill. in southern Brazil

et al. 2014

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Soil carbon accumulation is largely dependent on net primary productivity. To our knowledge, there have been no studies investigating the dynamics of carbon accumulation in weathered subtropical soils, especially in managed eucalyptus plantations. We quantified the seasonal input of leaf litter, the leaf decomposition rate and soil carbon stocks in an commercial plantation of Eucalyptus saligna Labill. in southern Brazil. Our goal was to evaluate, through multiple linear regression, the influence that certain chemical characteristics of litter, as well as chemical and physical characteristics of soil, have on carbon accumulation in soil organic matter fractions. Variables related to the chemical composition of litter were not associated with the soil carbon stock in the particulate and mineral fractions. However, certain soil characteristics were significantly associated with the carbon stock in both fractions. The concentrations of nutrients associated with plant growth and productivity, such as phosphorus, sulfur, copper and zinc, were associated with variations in the labile carbon pool (particulate fraction). Clay content was strongly associated with the carbon stock in the mineral fraction. The carbon accumulation and stabilization in weathered subtropical Ultisol seems to be mainly associated with the intrinsic characteristics of the soil, particularly clay content, rather than with the quantity, chemical composition or decomposition rate of the litter.

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“…Some authors observed increases in TN stocks after the conversion of land into agroforestry systems (Sartori et al, 2007;Morris et al, 2007), while others reported decreases in TN stocks upon conversion (Smal & Olszewska, 2008). The low TN stocks could be related to low plant residue input, the accumulation of the aerial parts of plants and the lack of N fertilization, while the high stocks could be related to plant residue sedimentation and atmospheric N (Mao et al, 2010).…”

Section: Total Soil Nitrogen Levels and Stocksmentioning

confidence: 99%

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

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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

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Evaluation of carbon accrual in afforested agricultural soils

Cited by 121 publications

References 41 publications

Changes in Soil Quality Following Poplar Short-Rotation Forestry Under Different Cutting Cycles

Changes in Soil Quality Following Poplar Short-Rotation Forestry Under Different Cutting Cycles

Clay content drives carbon stocks in soils under a plantation of Eucalyptus saligna Labill. in southern Brazil

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

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