Temporal evolution of C stock in soils from the cork oak forest in a post-fire scenario

2021 ◽  
Author(s):  
Patricia Almeida ◽  
Erika S. Santos ◽  
Diego Arán ◽  
Vanda Acácio ◽  
Inês Duarte ◽  
...  
Keyword(s):  
Temporal Evolution ◽  
Cork Oak ◽  
Tree Level ◽  
Oak Forest ◽  
Soil System ◽  
Organic C ◽  
C Stock ◽  
Cork Oak Forest ◽  
Burnt Areas ◽  
The Impact

<p>Forest fires are increasing their recurrence, intensity and scale in Portugal, increasing also the vulnerability of this region of Southwestern Europe to the impacts of the climate change. In Portugal, several studies have been focusing the dynamic of cork oak forest after fires from tree level to landscape level. However few information is available about the impact of wildfires in the soil quality, namely C stock, and its evolution. This component of the ecosystem and the evolution of its characteristics can be related with the dynamics of the landscape in the post-fire period and its knowledge can help in the management and rehabilitation of plant-soil system.</p><p>Serra do Caldeirão is located in Algarve region (S of Portugal). The soils are classified as Leptosols with low fertility. The landscape is characterized by cork oak forests with shrub cover which is dominated by Cistus species. To assess the distribution of total organic C in the study area, several soil sampling were intersected, on two sampling dates (2012 and 2013), with the vector information of the burned area in 2004. This information was intended to assess the temporal evolution of C concentration, depending on its location in a burnt or non-burnt area.</p><p>In general, the burnt areas showed greater variability of C concentrations in soils collected in both the years, with maximum values ​​of 33.0 g/kg for 2012 and 36.5 g/kg for 2013. These maximum values ​​exceed those obtained for soils in non-burnt areas. Despite of this scenario, and independently of the year, no statistically significant differences were found in the C concentrations of the burnt plots and the control plots. For other chemical characteristics (e.g. nutrients), the variations depended on the area. Implementation of post-fire recovery measures and forest management of the areas can justify this variation.</p><p>Acknowledgment: This work is co-financed by project REMAS (SOE3/P4/E0954) from Interreg SUDOE 2014-2020 program and is also financed by the FEDER Funds through the Operational Competitiveness Factors Program - COMPETE and by National Funds through FCT - Foundation for Science and Technology within the scope of the project  UID/AGR/04129/2020 (LEAF) and  the project UID/BIA/50027/2019 (CEABN/InBIO).</p>

Silicon fertilizer and biochar effects on plant and soil PhytOC concentration and soil PhytOC stability and fractionation in subtropical bamboo plantations

2021 ◽  
Author(s):  
Chengpeng Huang ◽  
Li Wang ◽  
Xiaoqiang Gong ◽  
Zhangting Huang ◽  
Miaorong Zhou ◽  
...  
Keyword(s):  
Fertilizer Application ◽  
Moso Bamboo ◽  
Pool Size ◽  
Phyllostachys Pubescens ◽  
Soil System ◽  
Organic C ◽  
Soil Organic Nitrogen ◽  
Plant Soil ◽  
Application Rates ◽  
The Impact

<p>The use of exogenous silicon (Si) amendments, such as Si fertilizers and biochar, can effectively increase crop Si uptake and the formation of phytoliths, which are siliceous substances that are abundant in numerous plant species. Phytolith-occluded carbon (C) (PhytOC) accumulation in soil plays an important role in long-term soil organic C (SOC) storage. Nevertheless, the effects of both Si fertilizer and biochar application on PhytOC sequestration in forest plant-soil systems have not been studied. We investigated the impact of Si fertilizer and biochar applications on 1) the PhytOC pool size, the solubility of plant and soil phytoliths, and soil PhytOC in soil physical fractions (light (LFOM) and heavy fractions of organic matter (HFOM)) in Moso bamboo (<em>Phyllostachys pubescens</em>) forests; and 2) the relationships among plant and soil PhytOC concentrations and soil properties. We used a factorial design with three Si fertilizer application rates: 0 (S0), 225 (S1) and 450 (S2) kg Si ha<sup>−1</sup>, and two biochar application rates: 0 (B0) and 10 (B1) t ha<sup>−1</sup>. The concentrations of PhytOC in the bamboo plants and topsoil (0–10 cm) increased with increasing Si fertilizer addition, regardless of biochar application. Biochar addition increased the soil PhytOC pool size, as well as the LFOM- and HFOM-PhytOC fractions, regardless of Si fertilizer application. The Si fertilizer application increased or had no effect on soil phytolith solubility with or without biochar application, respectively. Soil PhytOC was correlated with the concentration of soil organic nitrogen (R<sup>2</sup>=0.32), SOC (R<sup>2</sup>=0.51), pH (R<sup>2</sup>=0.28), and available Si (R<sup>2</sup>=0.23). Furthermore, Si fertilizer application increased plant and soil PhytOC by increasing soil available Si. Moreover, biochar application increased soil PhytOC concentration in LFOM-PhytOC and the unstable fraction of PhytOC. We conclude that Si fertilizer and biochar application promoted PhytOC sequestration in the plant-soil system and changed its distribution in physical fractions in the Moso bamboo plantation in subtropical China.</p>

scholarly journals Diversité floristique des suberaies du Parc National de Tlemcen (Algerie)

2009 ◽  
Vol 34 ◽  
pp. 77-89 ◽  
Author(s):  
Assia Letreuch-Belarouci ◽  
Boumediene Medjahdi ◽  
Noureddine Letreuch-Belarouci ◽  
Kheloufi Benabdeli
Keyword(s):  
Iberian Peninsula ◽  
North Africa ◽  
Endemic Species ◽  
Forest Inventory ◽  
National Park ◽  
Cork Oak ◽  
Oak Forest ◽  
Floristic Diversity ◽  
Cork Oak Forest ◽  
Flora Diversity

RESUME. Diversité floristique des suberaies du Parc National de Tlemcen (Algérie). L’analyse de la diversité floristique des forêts de Hafir Zariffet a révélé l’existence de 211 taxons appartenant à 65 familles et 164 genres. Le nombre de taxons endémiques et/ou rares inventoriés comporte: 1 endémique algérien,7 algéro-marocains, 11 ibéro-algéro-marocains, 7 sont endémiques d’Afrique du Nord et 11 sont des endémiques d’Afrique du Nord et de la Péninsule ibérique. Le nombre des taxons rares s’élève à 26 dont 9 sont en même temps rares est menacés. Des efforts urgents de protection doivent êtres consentis pour préserver le chêne liège ainsi que les espèces endémiques qui lui sont inféodées.Mots clés. Subéraies, inventaire, diversité, Parc National de Tlemcen, Algérie.SUMMARY. Flora diversity of cork oak forest in the National Park of Tlemcen (Algeria). The analysis of the floristic diversity of forest massif “Hafir-Zariffet” in the Tlemcen National Park has revealed the existence of 211 taxa which belong to 65 families and 164 genera. The number of taxa endemic and/or rare includes: 1 endemic algerian, 7 algero-moroccan, 11 ibero-algero-moroccan, 7 are endemic in North Africa and 11 are endemic in Iberian Peninsula and North Africa. The number of rare taxa is 26, 9 are at the same time threatened. Urgent efforts are required to preserve the cork oak as well as endemic species confined to it.Key words. Cork oak forest, inventory, diversity, National Park of Tlemcen, Algeria.

scholarly journals Warm and Fertile Sub-Humid Conditions Enhance Litterfall to Sustain High Soil Respiration Fluxes in a Mediterranean Cork Oak Forest

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 2918-2940 ◽  
Author(s):  
Lobna Zribi ◽  
Florent Mouillot ◽  
Fatma Gharbi ◽  
Jean-Marc Ourcival ◽  
Belgacem Hanchi
Keyword(s):  
Soil Respiration ◽  
Cork Oak ◽  
Oak Forest ◽  
High Soil ◽  
Cork Oak Forest

Development of a robust chromatographic method for the detection of chlorophenols in cork oak forest soils

2013 ◽  
Vol 186 (2) ◽  
pp. 1281-1293 ◽  
Author(s):  
Iain McLellan ◽  
Andrew Hursthouse ◽  
Calum Morrison ◽  
Adélia Varela ◽  
Cristina Silva Pereira
Keyword(s):  
Forest Soils ◽  
Chromatographic Method ◽  
Cork Oak ◽  
Oak Forest ◽  
Cork Oak Forest
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