Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer, terracing and organic amendments

Roldán, A.; Querejeta, José Ignacio; Albaladejo, J.; Castillo, V.

doi:10.1051/forest:19960605

Cited by 36 publications

(23 citation statements)

References 15 publications

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“…STOCKOSORB AGRO and MICRO (0.2-0.3 mm) are used for direct application to planting holes before planting. These hydrogels are frequently used for afforestation in semi-arid areas (Roldan et al 1996;Tognetti et al 1997). On the other hand, little information is available about the use of these hydrogels under environmental conditions in Central Europe.…”

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confidence: 99%

Effect of hydrogel application on survival and growth of pine seedlings in reclamations

Sarvaš¹,

Pavlenda²,

Takáčová³

2007

J. For. Sci.

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Soil and moisture conditions are key factors for vegetation establishment in reclamations of lands after mining. These factors play a more important role if the area is under extreme environmental conditions. Záhorská lowland belongs to the most extreme areas in Slovakia and it is characterized by drought and warm climate.Besides high average temperature and precipitation deficit this area is negatively affected by wind. Light sandy soil is damaged by wind erosion (Serdel 1973). These factors affect artificial forest regeneration and reclamation. Therefore it is needful to draw up new or modified procedures for the improvement of soil moisture conditions. The aims of these procedures should be to increase planting stock survival and field performance after planting.In the last years, a new generation of hydrogels was developed, highly cross-linked polyacrylamides with 40% of the amides hydrolyzed to carboxylic groups. According to Bouranis et al. (1995) these hydrogels are able to absorb and store water up to 400 times their own weight, and consequently, reduce water stress for the trees. Hydrogels of STOCKOSORB belong to these new hydrogels.Different hydrogel fractions are used commensurate with an application -STOCKOSORB Powder (fraction size < 0.2 mm, for the root system protection during planting, handling, storing and transporting). STOCKOSORB AGRO and MICRO (0.2-0.3 mm) are used for direct application to planting holes before planting. These hydrogels are frequently used for afforestation in semi-arid areas (Roldan et al. 1996;Tognetti et al. 1997). On the other hand, little information is available about the use of these hydrogels under environmental conditions in Central Europe.The aim of this study was to determine the effect of hydrogel STOCKOSORB application on the survival and growth of pine (Pinus sylvestris L.) seedlings in the reclamation of a sand pit. MATERIAL AND METHODS Pieskovňa I -Plantation 2002On In this study results of hydrogel application in reclamations are presented. The application of hydrogel affected the survival of pine seedlings during two vegetation periods after planting. Double application of STOCKOSORB AGRO (gel) on the root system after lifting caused an about 19% higher survival rate compared to control variants. The application of 7 g/planting hole of STOCKOSORB MICRO granules caused overdosage and plant mortality. The application of hydrogel granules is simple but it is very complicated not to cause the overdosage because of the very high swelling capacity of hydrogel. Research should be carried out to determine suitable hydrogel application rates for different environmental conditions and tree species. To design a technology with regard to the economic effectiveness of application will be a very important task.

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mentioning

confidence: 99%

Effect of hydrogel application on survival and growth of pine seedlings in reclamations

Sarvaš¹,

Pavlenda²,

Takáčová³

2007

J. For. Sci.

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“…The main reason for the improvement of growth in microbasins is clearly better availability of water in the soil which can be used up by the plants [9,12,30,33], as, even if in these cases the soil has been removed, which also improves growth, [4,6,29], the volume of growth affected is the same in both cases. In the other hand, when a water constraint is imposed there is less shoot growth [15].…”

Section: Discussionmentioning

confidence: 99%

“…The main limiting factor in the Mediterranean climate is the lack of water, especially during the summer months [3,10,19,29]. This is the reason why the introduction of seedlings linked to the site preparation focused on concentrating runoff water on the seedling bed can not only improve the afforestation and avoid its failure [2,9] but also increase the afforestation growth [12,30].…”

Section: Introductionmentioning

confidence: 99%

“…Site preparation must be directed not only to concentrate runoff water and to improve infiltration where needed but also to increase the volume of the soil in the parts where the roots are developed [14,27,29] and to avoid the alteration of vegetation, as it protects from erosion and improves the seedling planting [5,35]. The soil preparation must be also appropriate to preserve the area biodiversity [18,25].…”

Section: Introductionmentioning

confidence: 99%

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Effects of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate

et al. 2006

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-A forested area at the Sierra de Gador, Almería, Spain, was afforested with Aleppo pine (Pinus halepensis Mill.) 13 years ago using a technique never before used in Europe for forested areas: banks with micro-basins. This technique is compared in our study to the banks without micro-basins, both in sunny and shady slopes. It is also analysed whether this site preparation modifies the specific composition of the pre-existing vegetation. The average height of the pines planted on shady plots with micro-basins is 3.06 m whereas in shady plots without micro-basins the average height is 2.37 m, in sunny slope average height are 2.52 m compared to 1.61 m with and without micro-basins. These differences are significant, as are the ones in diameter: 11.1 cm compared to 8.5 cm in the first case and 11.0 compared to 7.0 cm in the second. Micro-basins supply possibly enough water to the banks so that the annual increase of the growth rings does not depend on the rainfall, not even during a particularly dry year. In plots without micro-basins there is a close relationship between the annual trunk growth and the spring rainfall. Using a multivariate analysis it is shown that neither land removal or a change in the hydric accumulations affect the composition of the preexisting vegetation.micro-basins / site preparation / semiarid / Pinus halepensis / soil compensation Résumé -Effets de la préparation du terrain sur des micro-bassins dans des reboisements de Pinus halepensis Miller en conditions de climat semi-aride. Un reboisement avec du pin d'Alep a été réalisé en 1988 dans une région forestière de la chaîne de montagnes espagnole de Gâdor, Almeria. Cette opération a utilisé pour la première fois en Europe la technique de « la banquette de micro-bassins ». On peut comparer l'effet de cette technique avec celle des banquettes sans micro-bassins à l'adret ou à l'ubac de vallées sur la croissance des pins et sur la composition spécifique de la végétation. La hauteur moyenne des pins des parcelles à l'ubac était de 3,06 m avec microbassins et de 2,37 m sans micro-bassins. Dans les parcelles à l'adret, la hauteur moyenne était respectivement de 2,52 et de 1,61 m. Les différences sont également significatives pour les diamètres à l'ubac, soit 11,1 cm contre 8,5 cm respectivement avec et sans microbassins, et à l'adret 11,0 contre 7,0 cm. Les micro-bassins fournissent l'eau nécessaire à la banquette pour que la croissance annuelle des arbres ne soit pas dépendante des précipitations, même lors d'une année sèche. En revanche, il existe une corrélation entre l'accroissement annuel du tronc et les précipitations du printemps dans les parcelles sans micro-bassins. Les analyses multifactorielles ont montré que ni le terrassement ni le changement des flux hydriques ne modifient la composition spécifique de la végétation. micro-bassins / préparation du terrain / semi-aride / Pinus halepensis / compensation du sol

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“…It can reconstitute a forest in deteriorated soil in a short time, and can contribute to soil conservation against erosion and to the subsequent establishment of oaks in Mediterranean conditions [1,9,16]. Considering these ecologically beneficial features, P. halepensis has been effectively used for reforestation and desertification control in harsh Mediterranean environments characterized by drought stress and nutrient deficiency [1,9,24]. However, its autecology is dependent on its ability to contract mutualistic associations with ectomycorrhizal fungi.…”

Section: Introductionmentioning

confidence: 99%

Diversity of ectomycorrhizal symbionts in a disturbed Pinus halepensis plantation in the Mediterranean region

2004

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-Ectomycorrhizal diversity (ED) associated with Pinus halepensis trees was examined 1.5 years after outplanting at a fire-disturbed site of Rieucoulon (Hérault, France). ED analysis was examined on non-inoculated and Suillus collinitus-inoculated plants, and on naturally regenerated trees. A total of 461 single ectomycorrhizas was typed using PCR-RFLP analysis and sequencing of the internal transcribed spacer (ITS) of the nuclear rDNA. Twelve ITS RFLP-taxa were detected. The ectomycorrhizal fungus S. collinitus (ITS RFLP-taxon 1) was the most abundant (45.8-59.7%) species in the three treatments, suggesting that it is a strong ectomycorrhizal competitor in this site. S. mediterraneensis (ITS RFLP-taxon 2) was restricted to control and naturally regenerated trees and was unequally moderate (11.7-31.9%). The remaining belowground ITS RFLP-taxa were uncommon and rare (0.0-9.6%). The current experimental P. halepensis plantation showed a species-poor community dominated by two Suillus species. Ecological strategies of these symbionts are discussed. Pinus halepensis M. / plantation / ectomycorrhizal diversity / PCR-RFLP-sequencing / rDNA (ITS)Résumé -Diversité ectomycorhizienne dans une plantation à Pinus halepensis. La diversité génétique des ectomycorhizes de plants de P. halepensis a été examinée une année et demie après introduction dans un site incendié de Rieucoulon (Hérault, France). Cette diversité a été caractérisée à l'aide du polymorphisme de fragments de restriction (RFLP) et du séquençage de l'espaceur interne transcrit (ITS) de l'ADN ribosomal nucléaire. Trois traitements ont été examinés : des plants témoins, des plants mycorhizés avec Suillus collinitus et des plants en régénération naturelle. Au total, 461 ectomycorhizes ont été soumises au typage moléculaire. Douze ribotypes d'ITS ont été détectés. S. collinitus (ribotype 1) est l'espèce dominante (45,8-59,7 %) dans les trois traitements suggérant une forte capacité de colonisation dans ce site. La présence de S. mediterraneensis (ribotype 2) est limitée aux plants témoins et aux autres issus de la régénération naturelle et sa fréquence est modérée (11,7-31,9 %). Les autres symbiotes ectomycorhiziens sont rares (0,0-9,6 %) et leur abondance diffère d'un traitement à l'autre. Cette étude révèle une faible diversité des symbiotes ectomycorhiziens dans la plantation à P. halepensis; elle est dominée par deux espèces du genre Suillus. Les stratégies écologiques de ces symbiotes sont discutées. Pinus halepensis M. / plantation / diversité des ectomycorhizes / PCR-RFLP-séquençage / ADNr (ITS)

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Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer, terracing and organic amendments

Cited by 36 publications

References 15 publications

Effect of hydrogel application on survival and growth of pine seedlings in reclamations

Effect of hydrogel application on survival and growth of pine seedlings in reclamations

Effects of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate

Diversity of ectomycorrhizal symbionts in a disturbed Pinus halepensis plantation in the Mediterranean region

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