Degradability of soils under oak and pine in Central Spain

Charro, E.; Gallardo, Juan F.; Moyano, Amelia

doi:10.1007/s10342-009-0320-4

Cited by 17 publications

(8 citation statements)

References 40 publications

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“…Regarding the SOC stocks, SOC 40 -S ranged from 20.41 Mg·ha −1 for P. sylvestris to 37.32 Mg·ha −1 for P. halepensis. These values are lower than those found in other studies, which determined the average SOC-S for a P. halepensis plantation (Northern Spain, 300 trees·ha −1 , dbh = 17.5 cm, 40.72 Mg·ha −1 [51]; SOC-S ranged between 90 and 166 Mg·ha −1 [52,53]) and for P. sylvestris (102 Mg·ha −1 [1]) and P. pinaster (107 Mg·ha −1 [49]). These differences may be related to the shallow soil layers (0-40 cm) in our study, which limit the SOC related to root density [54].…”

Section: The C Stocks In Biomass and Soc For Different Pinus Spcontrasting

confidence: 69%

Assessment of the Carbon Stock in Pine Plantations in Southern Spain through ALS Data and K-Nearest Neighbor Algorithm Based Models

Navarrete-Poyatos

Navarro-Cerrillo

Lara-Gómez³

et al. 2019

Geosciences

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Accurate estimation of forest biomass to enable the mapping of forest C stocks over large areas is of considerable interest nowadays. Airborne laser scanning (ALS) systems bring a new perspective to forest inventories and subsequent biomass estimation. The objective of this research was to combine growth models used to update old inventory data to a reference year, low-density ALS data, and k-nearest neighbor (kNN) algorithm Random Forest to conduct biomass inventories aimed at estimating the C sequestration capacity in large Pinus plantations. We obtained a C stock in biomass (W t -S) of 12.57 Mg·ha −1 , ranging significantly from 19.93 Mg·ha −1 for P. halepensis to 49.05 Mg·ha −1 for P. nigra, and a soil organic C stock of the composite soil samples (0-40 cm) ranging from 20.41 Mg·ha −1 in P. sylvestris to 37.32 Mg·ha −1 in P. halepensis. When generalizing these data to the whole area, we obtained an overall C-stock value of 48.01 MgC·ha −1 , ranging from 23.96 MgC·ha −1 for P. halepensis to 58.09 MgC·ha −1 for P. nigra. Considering the mean value of the on-site C stock, the study area sustains 1,289,604 Mg per hectare (corresponding to 4,732,869 Mg CO 2 ), with a net increase of 4.79 Mg·ha −1 ·year −1 . Such C cartography can help forest managers to improve forest silviculture with regard to C sequestration and, thus, climate change mitigation.In addition to biomass, C is also stored in litter and forest soils. In fact, soils are the largest reservoir of terrestrial C, for both organic and inorganic forms [6]. Soil organic carbon (SOC) can be stored in soils for thousands of years under, suitable conditions, and is a vital component of plant nutrient cycles [7]. Forest management aimed at increasing stand growth has been shown to be effective in increasing the C sequestration capacity [8,9]. Thinning treatments improve health and tree vigor, increasing forest productivity [10], while the soil C content shows a slight decrease in the first stages, recovering its level and increasing once the canopy is restored [11].Accurate estimation of forest biomass to produce spatially explicit mapping of forest C stocks over large study areas is of considerable interest nowadays [12]. In this regard, the field-based inventory is the most common method for evaluating the dendrometric characteristics and stand dynamics of forests. These classic forest inventories have a high demand for labor, are expensive, and require lots of field plots to obtain full inventory data for large areas on the ground [13,14]. Thus, with the advances in remote sensing techniques, these traditional methods are being replaced or supplemented with Light Detection and Ranging (LiDAR) techniques, which provide stand data over large areas, optimizing time and costs. LiDAR technology brings a new perspective to forest inventories by directly providing three-dimensional information on the entire surface [12].LiDAR (Laser Imaging Detection and Ranging) systems from an airborne platform (airborne laser scanning, ALS) are equipped with a scanning device th...

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Section: The C Stocks In Biomass and Soc For Different Pinus Spcontrasting

confidence: 69%

Assessment of the Carbon Stock in Pine Plantations in Southern Spain through ALS Data and K-Nearest Neighbor Algorithm Based Models

Navarrete-Poyatos

Navarro-Cerrillo

Lara-Gómez³

et al. 2019

Geosciences

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“…We can conclude that the studied J. thurifera forest does not have a large amount of C if it is compared with the other forests mentioned in this work; however, its organic matter is more stable than those for the oak and pine forests of a previous work [52]. The loss of C in the soil is due to degradation processes and it is increasing with global warming, as was pointed out in other works [5].…”

Section: Discussionmentioning

confidence: 44%

“…Table 7 shows the results obtained in the present study with those of a previous work, for which the same methodology was followed [52]. The data of the thurifera forests correspond to average values obtained from Profile 1.…”

Section: Discussionmentioning

confidence: 52%

The Potential of Juniperus thurifera to Sequester Carbon in Semi-Arid Forest Soil in Spain

Charro

Moyano

Cabezón

2017

Forests

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Abstract:The main purpose of this work is to show the influence of vegetation in the storage and stabilisation of organic carbon in semi-arid Juniperus thurifera (J. thurifera) forest soil in central Spain. The variability of the organic matter storage with factors such as sex, trunk diameter and the protection of the canopy of the tree has been analysed. The distribution of the soil organic carbon (SOC) into different fractions has also been determined, in order to estimate the stability of the organic matter. The results show that the SOC concentration has no dependence on the sex of the tree, but it increases with the diameter of the trunk and under the protection of the tree canopy. This study found that the organic matter of the J. thurifera forest soil has a high proportion of recalcitrant organic fraction, humin, which suggests that, given its organic matter stability, J. thurifera forest soils could be a real carbon sink. Consequently, the conservation of this type of old forest ecosystem is important for promoting carbon sequestration.

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“…According to Bejger et al [43], humification is understood as the transformation of macromorphologically identifiable organic matter into amorphous compounds, as a rule involving the changes that occur in vegetal residues or soil organic matter during the humification process. Also, the ratio among extractable carbon, humic acids carbon, fulvic acids carbon and total organic carbon is used to determine the degree of humification [44]. It is clear that the relative increase in the share of humic acids with respect to other humic substances is valuable from the agronomic and ecological viewpoint.…”

Section: Peatmentioning

confidence: 99%

The Status of Pachiterric Histosol Properties as Influenced by Different Land Use

Šlepetienė¹,

Amalevičiūtė-Volungė²,

Šlepetys³

et al. 2018

Peat

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Soil drainage as well as soil cultivation and fertilization has considerable influence on the organic matter mineralization rate and changes in the profile structure. Our research suggested that quantitative and qualitative characteristics of peat soil are changing in response to the renaturalization processes and different management. The study set out to estimate chemical and physical properties of Pachiterric Histosol, qualitative and quantitative changes in carbon resulting from different management and renaturalization processes. Wetland and peatland soils are among the largest organic carbon stocks, and their use contributes to carbon emissions or accumulation processes. The focus of our work is research into the peculiarities of organic carbon accumulation and transformation as influenced by different land use of peat soil. Results on the chemical properties of Pachiterric Histosol showed the influence of management and renaturalization on mobile and by pyrophosphate solution extractable humic and fulvic acids and humification degree. We are also exploring the specificities of organic carbon variation in the context of peat renaturalization and are seeking to answer the question as how to optimize the use of peat soils and how to match up this with the renaturalization processes in order to reduce greenhouse gas emissions and contribute to organic carbon accumulation and conservation in the soil.

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Degradability of soils under oak and pine in Central Spain

Cited by 17 publications

References 40 publications

Assessment of the Carbon Stock in Pine Plantations in Southern Spain through ALS Data and K-Nearest Neighbor Algorithm Based Models

Assessment of the Carbon Stock in Pine Plantations in Southern Spain through ALS Data and K-Nearest Neighbor Algorithm Based Models

The Potential of Juniperus thurifera to Sequester Carbon in Semi-Arid Forest Soil in Spain

The Status of Pachiterric Histosol Properties as Influenced by Different Land Use

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