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Comparison of Growth Rate of Black Locust (Robinia Pseudoacacia L.) on Productive and Marginal Cultivated Lands for Sustainable Agroforestry Systems

Kortoci Kellezi Mirvjena, Kortoci Ylli

Ecological Engineering & Environmental Technology

2022

Vol. 23, iss. 2

206--211

Robinia pseudoacacia is considered as a multipurpose tree because of its great adaptability to face environmental stresses and restore degraded sites, its valuable wood, easy propagation, excellent coppicing potential especially for high yield biomass production, high seedling survival etc. This tree represents an interesting perspective in ecological engineering, agroforestry and urban forest. For this reason, understanding its growth dynamics falls within the criteria of forest and peri-urban sustainability. The effects of soil condition on the survival and growth of Robinia pseudoacacia planted on degraded and cultivated land, respectively in Monte Romano site and Azienda Agraria didattico-sperimentale "Nello Lupori" site, in Italy, were studied in a field transplant experiment using the analysis of variance. Cultivated land showed higher survival rate because of the better soil, topography and climatic conditions. Height and diameter growth responded differently to soil conditions and monitoring period. Mean height and diameter increases were higher in cultivated land. A significant difference in height was found between the initial and final periods in cultivated land. This study is considered important because the selected species can help improving the soil conditions of the selected site so in the future this area can be reforested with valuable wood species. This has to be taken into consideration especially for Albania when illegal logging has created a strong decrease of forest surface associated with soil erosion phenomenon, overflooding, as well as overuse of the forest for firewood to fulfill the people demand, especially in rural areas. In addition, honey production is an important agroforestry aspect and the flowers of Robinia pseudoacacia are known for the production of good quality honey; moreover they can be used as medicinal plants.

Nowe zestawy pojazdów przeznaczone dla szkółek leśnych do transportu sadzonek drzew

Dubowski A. P., Grzelak J., Karbowski R., Pawłowski T., Rakowicz A., Weymann S., Wojtkowiak R., Zembrowski K.

Logistyka

2009

nr 6

CD-CD

Nowe zestawy pojazdów złożone z samochodu skrzyniowego i naczepy typu gęsia szyja opracowano w PIMR z przeznaczeniem dla transportu sadzonek drzewek w szkółkach leśnych. Leśny zestaw pojazdów wyposażono w nowej kategorii system sprzęgu kulowego (średnica kuli 60mm) oraz nowoczesny elektroniczny układ sterujący hydraulicznymi hamulcami naczepy. Dla potrzeb wstępnych badań drogowych i leśnych zbudowano wirtualne i rzeczywiste modele: naczepy typu gęsia szyja, stalowego kontenera, lekkiego składanego żurawika. Kontenery są chronione opończami wykonanymi z agrotkaniny STRADOMAGRO, w trzech kolorach-białym czarnym i zielonym. Wstępne drogowe i leśne badania wykazały, że tkaniny te dobrze chronią przewożone sadzonki drzewek leśnych. Nowe zestawy drogowe powinny zmniejszyć nakłady pracy ludzkiej, poprawić jej jakość oraz bezpieczeństwo i efektywność transportu w szkółkach leśnych w Polsce.

New transportation units for forestry tree nursery were designed and build in PIMR that are based on light trucks coupled with gooseneck trailers. Forestry transportation unit is equipped with new category of ball hitch and its coupler (60 mm in dia) as well as with modern electronic system for steering hydraulic brakes in gooseneck trailer . Virtual models as well as real steel models of gooseneck trailer, steel container , light collapsible lift were made for preliminary road and forestry tests. Containers were equipped with new protective covers made from three different colors (white, black, green) nonwoven agrotextiles STRADOMAGRO for secure transportation of Styrofoam blocks with forestry trees. Road and forestry preliminary tests shown that such kind of agrotextiles are well protecting small trees during transportation. New road units should reduce human work, improve its quality and improve of safety and efficiency of forestry nurseries transportation in Poland.