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Accueil du site → Doctorat → Turquie → Afforestation success of ecto- and arbuscular mycorrhizae inoculated Black pine (Pinus nigra), cedar (Cedrus libani) and Turkish oak (quercus cerris) seedlings in semi-arid ecosystems

Düzce Üniversitesi (2016)

Afforestation success of ecto- and arbuscular mycorrhizae inoculated Black pine (Pinus nigra), cedar (Cedrus libani) and Turkish oak (quercus cerris) seedlings in semi-arid ecosystems

TOPRAK BÜLENT

Titre : Afforestation success of ecto- and arbuscular mycorrhizae inoculated Black pine (Pinus nigra), cedar (Cedrus libani) and Turkish oak (quercus cerris) seedlings in semi-arid ecosystems

Ekto- ve arbusküler mikoriza aşılanmış Karaçam (Pinus nigra), Toros sediri (Cedrus libani) ve Saçlı Meşe (Qercus cerris) fidanlarının İç Anadolu’nun yarı kurak sahalarındaki ağaçlandırma başarısı

Auteur : TOPRAK BÜLENT

Université de soutenance : Düzce Üniversitesi

Grade : DOKTORA TEZİ 2016

Résumé
About 2/3 of Anatolia which is far from maritime influence has either arid or semi-arid conditions. Besides climate, anthropogenic disturbances and animal pressure on vegetation cover has been exposed soils to both water and wind erosion on waste areas. Thus the biggest challenge for Turkish foresters now and in future is afforestation of these erosion prone arid and semiarid lands. Data from different parts of the world suggest that mycorrhizae inoculation can significantly increase the survival rate and growth of seedling in such a stressful environment. Thus using mycorrhizae inoculated seedling may increase plantation success. There is about 5,25 million ha land area (4,25 million ha forest and one million ha owned by treasury department) that are socially, economically and ecologically feasible for afforestation practices in Turkey. A considerable amount of these potential afforestation areas suffer from water deficiency during growing season. Therefore the objective of this study is to compare the differences of ecto- and arbuscular mycorrhizae inoculated and not-inoculated black pine, cedar and Turkish oak seedlings’ performance in nursery and inland afforestation sites. The current study had been conducted in projected (2012-2013) afforestation areas of Eskisehir Regional Directorate of Forestry. Inoculated and control (not-inoculated) seedlings were planted in three different water stressed regions (Eskişehir/Mihalıççık, Afyonkarahisar/Taşoluk and Kütahya/Sobran). With periodically collected data, the treatments were compared for seedling growth (diameter and height) and nutritional status. The soil productivity of the differently treated sites were compared via resin bag methods. First mycorrhizal colonization rates in different treatments were calculated. For each treatments, seedling root-collar diameter, height, biomass, nutrient content, and leaf area (LA) were determined. The same seedling variables were re-measured in the fields. For soil analyses, two sets of soil samples were collected to determine bulk density and other soil properties such as texture, pH, cation exchange capacity, and nutrient content. Ion exchange resin bags were used to catch inorganic nutrients in top soils April through June each growing season during. Analysis of the data indicated that mycorrhizal colonization were effective on seedlings’ morphological characteristics. Significant difference were detected for shoot height, root collar diameter, root length, leaf area index, shoot dry weight, root dry weight, shoot fresh weight, root fresh weight and shoot to root dry weight ratio and Dickson quality index of differently treated seedling. The results of field trials also suggest that ecto and arbuscular mycorhizae can effect seedling performance.

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Page publiée le 1er janvier 2023