Soil organic carbon and morphology as affected by pine plantation establishment in Minas Gerais, Brazil

Zinn, Yuri Lopes; Guerra, Adriano Ribeiro; Silva, Carlos Alberto; Faria, Jéssica Amaral de; Silva, Thays A. C.

doi:10.1016/j.foreco.2014.01.034

Cited by 11 publications

(7 citation statements)

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“…During the incubation of the soil-carbonate mixture, soil moisture content was kept close to 70 % of the soil field capacity, with replacement of deionized water every week. The soil C content was determined using an Elementar Vario TOC Cube model analyzer by incinerating the soil samples (0.25 mm sieved) at 950 °C and quantifying the C evolved using an NDIR detector, following the methodology described by Zinn et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Soil Fertility and Electrical Conductivity Affected by Organic Waste Rates and Nutrient Inputs

Carmo

Lima

Silva

2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:The composition of organic waste (OW) and its effect on soil processes may change soil fertility and electrical conductivity (EC). The side effects of waste use in crop fertilization are poorly understood for Brazilian soils. This study examined the effect of the addition of 15 different organic wastes to Oxisols and a Neosol on pH, base saturation, EC, cation exchange capacity (CEC at pH 7), and the availability of Al, macro (P, K, Ca 2+ , Mg 2+ and S) and micronutrients (B, Fe 2+ , Mn 2+ , Cu 2+ and Zn 2+ ). Soil samples (150 g) were treated with chicken, pig, horse, cattle, and quail manures, sewage sludge 1 and 2, eucalyptus sawdust, plant substrate, coconut fiber, pine bark, coffee husk, peat, limed compost, and biochar. Wastes were added considering a fixed amount of C (2 g kg -1), which resulted in waste rates ranging from 2.5 to 25.6 Mg ha -1 . The soil-waste mixtures were incubated for 330 days in laboratory conditions. The waste liming or acidification values were soil-dependent. The use of some manures and compost increased the pH to levels above of those considered adequate for plant growth. The soil EC was slightly increased in the Neosol and in the medium textured Oxisol, but it was sharply changed (from 195 to 394 µS cm -1) by the addition of organic wastes in the clayey Oxisol, although the EC values were below the range considered safe for plant growth. Changes in the soil availability of P, K + , Ca 2+ and Zn 2+ were highly related to the inputs of these nutrients by the wastes, and other factors in soil changed due to waste use. Organic waste use simultaneously affects different soil fertility attributes; thus, in addition to the target nutrient added to the soil, the soil acidity buffering capacity and the waste liming and agronomic value must be taken into account in the waste rate definition.

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Section: Methodsmentioning

confidence: 99%

Soil Fertility and Electrical Conductivity Affected by Organic Waste Rates and Nutrient Inputs

Carmo

Lima

Silva

2016

Rev. Bras. Ciênc. Solo

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“…Generally, SOC stock initially declines following the conversion of a secondary coniferous forest to a pine plantation. Previous studies have shown that whole-tree harvesting causes a decrease in soil C stocks by approximately 6% [ 20 ], but these losses are regained afterwards as stands mature [ 12 , 17 ]. These results are consistent with our observations from the first 2 years following pine reforestation which SOC stocks decreased by 42.29% compared to secondary coniferous forest, and thereafter SOC stocks did not represent a net gain but rather a recovery of C loss as a result of reforestation [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

“…However, the impact of reforestation on soil C stock is not entirely clear and remains controversial. Previous studies have reached at least four different main viewpoints [ 3 ], stating that SOC stock is either a) increased [ 6 , 13 , 14 ], b) decreased [ 9 , 13 – 17 ], c) that changes in SOC stock are negligible [ 4 , 8 ], and d) that SOC stock level decreased initially to a significant degree, but then recovered to the original level [ 18 ]. Importantly, soil C is lost rapidly following deforestation during the process of conversion from primary forest to cropland, pasture and pine plantations [ 3 , 6 , 16 ], and may drop to 50% of the original level within the first 20 years following deforestation [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…Pine trees, regardless of exotic or native, are extensively planted on marginal or degraded lands that have inherently low soil fertility and SOC levels [ 17 ]. Most plantations are composed of pine trees in China, and forest biomass has sequestered 1.65±0.76 Pg C yr -1 since 1982 with a C accumulation rate of 57±26 g C m -2 yr -1 in standing tree biomass [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Changes in Biomass Carbon and Soil Organic Carbon Stocks following the Conversion from a Secondary Coniferous Forest to a Pine Plantation

Liu

et al. 2015

PLoS ONE

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The objectives of this study were to estimate changes of tree carbon (C) and soil organic carbon (SOC) stock following a conversion in land use, an issue that has been only insufficiently addressed. For this study, we examined a chronosequence of 2 to 54-year-old Pinus kesiya var. langbianensis plantations that replaced the original secondary coniferous forest (SCF) in Southwest China due to clearing. C stocks considered here consisted of tree, understory, litter, and SOC (0–1 m). The results showed that tree C stocks ranged from 0.02±0.001 Mg C ha-1 to 141.43±5.29 Mg C ha-1, and increased gradually with the stand age. Accumulation of tree C stocks occurred in 20 years after reforestaion and C stock level recoverd to SCF. The maximum of understory C stock was found in a 5-year-old stand (6.74±0.7 Mg C ha-1) with 5.8 times that of SCF, thereafter, understory C stock decreased with the growth of plantation. Litter C stock had no difference excluding effects of prescribed burning. Tree C stock exhibited a significant decline in the 2, 5-year-old stand following the conversion to plantation, but later, increased until a steady state-level in the 20, 26-year-old stand. The SOC stocks ranged from 81.08±10.13 Mg C ha-1 to 160.38±17.96 Mg C ha-1. Reforestation significantly decreased SOC stocks of plantation in the 2-year-old stand which lost 42.29 Mg C ha-1 in the 1 m soil depth compared with SCF by reason of soil disturbance from sites preparation, but then subsequently recovered to SCF level. SOC stocks of SCF had no significant difference with other plantation. The surface profile (0–0.1 m) contained s higher SOC stocks than deeper soil depth. C stock associated with tree biomass represented a higher proportion than SOC stocks as stand development proceeded.

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“…Бразильські вчені досліджують кількість органічного вуглецю, сполук Fe, вилугованість, фізичні та хімічні властивості ґрунтів у разі лісовідновлення з Pinus sp. (Zinn et al, 2014), морфологічні, мінералогічні та мікроморфологічні властивості ґрунтів прибережних північно-східних рівнин Бразилії (Silva et al, 2012), дощових червів як показник якості ґрунту в бразильських системах обробки ґрунту (Bartz et al, 2013). Проблеми рекультивації ґрунтів Південно-Східної Аляски після зсувів досліджували вчені США (Adams and Sidle, 1987).…”

Section: вступunclassified

Micromorphological and physical properties of southern ravine soils in Dnipropetrovsk region

Bozhko

2014

Biosys. divers.

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The article contains the results of determination of physical and micromorphological properties of soils under natural ravine vegetation in the southern part of Dnipropetrovsk region. The value of ravine forests for the steppe zone of Ukraine is analyzed, and the methods of investigation are shown. Forest typology characteristics of the vegetation stationary test areas, as well as macro- and micromorphological characteristic of the soil profile, structural condition of the soil, its aggregate composition, and water stability of aggregates, are determined. Soil-forming processes in ravine ecosystems of the southern variant in Dnipropetrovsk region are diagnosed. Micromorphological studies of soil in the intact state, as well as analysis of produced thin sections, revealed the high degree of aggregation of the upper (0–60 cm) soil horizons. Structure formation is of zoogenic origin. Large amount of soil aggregates of coprolite structure is clearly seen under the microscope. Well decomposed plant residues are visible in the aggregates. Soil over the entire area of the section is of dark brown, almost black color. This is due to the large amount (80%) of organic substances indicating the active processes of humification. Fine grained humus is represented by plenty of equally spaced bunches of humones. Humus is in mull form. Skeleton is composed of different sized minerals, with quartz and feldspars dominating in its structure. Plasma is of humus-clay type, uniform over the entire area of the section and anisotropic with point illumination. Visible pore surface area is significant (65%) in the upper layers of the soil profile. Pores feature round and oblong regular shape. Often (on 50% of the pore area) the outbreaks of small invertebrates are found. With the depth of the soil profile, visible pore area decreases, as well as the aggregation. While correlating with the micromorphological characteristics, water stability of the soil structural aggregates reaches very high (80%) indices in the upper horizons of the soil profile and gradually decreases with the soil profile depth. Active biogenic microstructure formation, defining significant aggregation and looseness of microstructure, was diagnosed.

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Soil organic carbon and morphology as affected by pine plantation establishment in Minas Gerais, Brazil

Cited by 11 publications

References 30 publications

Soil Fertility and Electrical Conductivity Affected by Organic Waste Rates and Nutrient Inputs

Soil Fertility and Electrical Conductivity Affected by Organic Waste Rates and Nutrient Inputs

Changes in Biomass Carbon and Soil Organic Carbon Stocks following the Conversion from a Secondary Coniferous Forest to a Pine Plantation

Micromorphological and physical properties of southern ravine soils in Dnipropetrovsk region

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