Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 4 uppsatser.

Lodgepole pine is exotic species of pine originating from North America (Canada, United States, United Mexican States), where it occurs along the Pacific coast. This is a very compatible species because, despite a plethora of geomorphological habitats has created a total of five subspecies, while the Czech Republic there are three of them. They are: Shore pine (Pinus contorta subsp. contorta), Lodgepole pine (Pinus contorta subsp. latifolia), Murray pine (Pinus contorta subsp. murrayana). Occurrence of Pinus contorta was recorded in nine counties, twenty and twenty-three districts of municipalities with extended powers. The total stand area was found to 128.66 hectares. When finding that Pinus contorta in our conditions is described as exotic plants. As a gateway for non-native landscape landscape that is post-mining areas. Use of Lodgepole pine was thus deemed appropriate. Uncultured landscape together with wood unoriginal see to it that the uncultured landscape becomes a landscape rich in diversity. Lodgepole pine, of course, is not the only species that was about it all taken care of. Its suitability was chosen because of its low demands on soil, hydrological and climatic conditions, including frost hollows at elevations 2,500 meters above sea level. Which in the Czech Republic or cannot be used because it is our highest point 1,602 meters above sea level. The effort was to map Lodgepole pine throughout the Czech Republic, where it would be clearly seen where the forest vegetation on which the administrative territory of the Lodgepole pine occur. This reliance on the willingness of administrators data information, which for our purposes were considered Institute of Forest Management, where we were given virtually everything to us this institution has been able to provide. Another institution, where we were given also all the military management of forests and farms. Unfortunately, the state enterprise Forestry of the Czech Republic, as majority owner of primary forests in the Czech Republic, was not willing to provide the requested information on the matter on Lodgepole pine, forest management Děčín only the necessary information. Given that this work was originally conceived to Pinus contorta subsp. latifolia, while work was concluded that Pinus contorta subsp. latifolia is a segmentation occurring geographic subspecies that was not able to clearly identify the data that we had available so this work deals with Lodgepole pine at the species level and the resulting map outputs in the results of the work 7 were processed in the geographic information systems, which managed to get stand up to the level surface (ha) in the regions of municipalities with extended powers.

Det finns ett stort intresse för exoter inom skogsbruket och i denna rapport behandlas klippgran (Abies laciocarpa) och Contorta (Pinus contorta). Vid undersökningen av dessa trädsorter jämfördes diameter och höjdtillväxt med gran (Picea abies) och björk (Betula pubescens). Mätningarna utfördes på lokaler i Strömsunds kommun i Jämtlands län vid Näxåsen (Strömsund) och runt Jorm i Frostviken på SCA:s marker

This diploma thesis deals with the detection of the dynamics of the growth and development of lodgepole pine, which is intended for the purposes of the forestry reclamation on anthropogenic soils spoil banks. In the first stage it is approached the issue of growth and development of woody plants on spoil banks. Are described recent formations, their cutting and editing, further forestry reclamation and associated issues, on which follows the description of the entitlements of tree species in different territories, further criteria necessary for the correct evaluation of the conditions on the habitats directive and appropriate ways of establishing the stands. Subsequently, we approached lodgepole pine, its description, extension, variability, etc. In the second part of the thesis is studied and evaluated growth of lodgepole pine. The first is characterized by the interest of the territory and its natural conditions. On the plots in the forestry arboretum on the spout Antonin samples were taken in the form of stem discs, which served as the basis for determining the necessary values. Values were obtained from tree rings.

Den här studien är en uppföljning av föryngringsresultatet efter maskinell sådd av contorta ( Pinus contorta Dougl. var. latifolia Engelm.) i Härjedalen. Efter tre växtsäsonger uppgick det totala antalet såddplantor till 3 700 per ha och antalet huvudplantor uppgick till 1 800 per ha. Andelen nollytor uppgick till 2 %. Det var ingen skillnad i föryngringsresultat mellan låg och hög altitud. Generellt gav maskinell sådd av contorta ett tillfredsställande föryngringsresultat. På mindre bördig mark var såväl det totala antalet såddplantor som antalet huvudplantor högre än på bördigare mark. / Mechanical regeneration by seeding of lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) in the province of Härjedalen in Sweden was studied. After three growing seasons the total number of seedlings were 3 700 per ha and the number of main seedlings were 1 800 per ha. 2% of the sample plots had no plants within 3 m. No difference could be found between objects on high and low altitudes. In general mechanical seeding gave satisfactory regeneration. On low fertile soils the total number of seedlings as well as the future main seedlings was higher than on more fertile soils.

This thesis examines the ethnobotany, physiology, anatomy, and nutritional value of edible lodgepole pine (Pinus contorta Douglas ex Louden var. latifolia Engelm. ex S. Watson ) cambium. Many First Peoples of the Pacific Northwest historically used lodgepole pine cambium. It was so popular among interior First Peoples of British Columbia that it was considered a universal food. Even though harvesting and consumption of pine cambium is diminishing in popularity today, I was able to learn from some Tsilhqot‟in First Peoples on Redstone Reserve who had prior experience with pine cambium. Nutritional analysis of lodgepole pine cambium revealed the tissues to be high in protein and sugar as well as a suite of micronutrients, which contribute to overall immunity and electrolyte balance. While lodgepole pine cambium is considered a sweet, seasonal treat by many First Peoples it is evident through my analysis that there are added nutritional benefits beyond the pleasure of consumption. This research illustrates an important case study of an endangered traditional food, which can be integrated into modern diets today. It also explores the integration of multiple disciplines of knowledge to inform this subject matter, providing multiple dimensions to understanding cambium production, timing of harvest, and benefit of consumption. / Graduate

The canopy cover of the Pinus contorta forests of west-central Alberta, dictates colonization of the forest floor ground layer. This dynamic ground layer is a mosaic of feather mosses and reindeer lichens in a system driven by disturbance. In this project, anthropogenic was used to control canopy cover change and study its effects on the ground layer. Timber companies selectively mechanically thinned sections producing three experimental areas with uncut controls. Data were collected from 182, 6.5 m2 plots located in the four thinning areas. Six general areas of inquiry were posed around determining ground layer responses to canopy opening: 1) vegetation, 2) plant species richness, 3) plant abundance, 4) diaspore availability, 5) environmental limiting factors, 6) moss and lichen establishment. In 1997, three timber companies were involved in selective tree removal at three different stand percentages (20/40/60%), however, these were not consistent when measured in 2005. This variation in operational logging along with changes over the seven year time period, resulted in strong disparity for each of the thinning regimes. Percent canopy cover change for all thinned plots was ranked and three new groups created; least, moderate, most canopy change. These new groups formed the basis for the data presented in Chapter 3. The three thinning groups had little to no effect on species richness, but overall showed a small decrease from measurements taken pre-harvest. Numbers of locally rare species were similar to pre-harvest levels, but there were some gains and losses of species between pre-harvest and seven years post-harvest. In contrast to the lack of change in diversity, the abundance of dominant species and major vegetation components underwent dramatic changes. Dominant species of both vascular plants and bryophytes decreased with increasing canopy openness, with vascular plants being gradually affected while mosses were more affected at less intense canopy opening. Abundances of lichens showed no change. When measuring limiting factors (biotic and abiotic) for ground layer mosses and lichens, diaspores (spores and fragments) were plentiful in all stands, but differed in abundance at the micro-scale. The position of feather mosses and reindeer lichen in the forest floor mosaic appears to be due to an intermingling of environmental influences (at both the meso- and micro-scale). With less environmental constraints on lichens and the widespread availability of lichen fragments, lichens are more tolerant to the conditions evoked by thinning than are mosses. Mosses are more restricted by environmental conditions and have more constrained diaspore dispersal than lichens. Thus, mosses are more limited both by diaspore dispersal and by harsh environmental conditions in open canopy habitats. Whereas relative humidity (RH) did not differ at the stand level, moss dominated areas had higher RH no matter where they occurred, lichen-dominated areas did not--suggesting the moss occurrence is at least partially controlled by micro-scale level factors. Moss establishment is effected by the "ghosts" of past events and substrates. Mosses are widespread in formerly moss-dominated areas that contain organic substrates and high canopy cover. Lichen establishment is limited in previously moss-dominated areas. Species interactions weighed more heavily on moss establishment than on that of lichens. Therefore, the effects of canopy change on the ground layer are variable corresponding to moss decreases, but not lichens. Seven years post-harvest species diversity is unchanged, but vegetation, as a whole, has been affected.

Memoria para optar al Título Profesional de Ingeniero Forestal / La degradación de los suelos en Chile fue causada principalmente por la acción conjunta del clima y la colonización humana, para combatir dichos efectos se implementó en la zona centro y sur del país un programa de forestación con especies exóticas. Entre las especies más importantes plantadas en la Región de Aysén se destacó pino ponderosa, pino silvestre, pino oregón y pino contorta. En un ensayo de Pinus contorta ubicado en la Reserva Nacional de Coyhaique, se estudió el efecto de aplicar 4 tratamientos silvícolas en el crecimiento en diámetro y altura. Éstos fueron: T1 (Poda + Raleo + Fertilización), T2 (Raleo + Fertilización), T3 (Raleo en densidad de 2.400 arb/ha) y T4 (Raleo en densidad de 2.000 arb/ha). La información recolectada se evaluó a través de un análisis descriptivo e inferencial. El mejor resultado fue T2 cuyo tratamiento consistió en 72% de raleo y fertilización (Super Nitro 600 kg/ha), demostrando que una intervención más moderada y sin poda responde con mejores crecimientos.

I arbetet studerades volymtillväxt hos några försök med lärk och deras hybrider i Siljansfors försökspark (SLU). Mätningar gjordes hösten 2021 på ett lärkförsök, anlagt våren 2015. Syftet var att för första gången i Sverige testa och jämföra på en och samma lokal produktionspotentialen hos japansk (Larix kaempferi), europeisk (Larix decidua) och rysk lärk (Larix sukaczewii), samt korsningar mellan dessa i relation till tall (Pinus sylvestris), gran (Picea abies) och contorta (Pinus contorta). Jämförelser gjordes också med mätningar på två tidigare försök på samma försökspark anlagda 1963 och 1965 bestående av rysk- och europeisk lärk, tall, gran, vårtbjörk och glasbjörk, dock inga hybrider. Resultatet från jämförelserna i försök 9297 från 2015 visar att europeisk lärk har den största volymutvecklingen mellan 2015 och 2021.

Tack vare vissa önskade egenskaper gjordes en storsatsning på contortatall (Pinus contorta) i Sverige på 70-talet. Idag finns cirka 600 000 ha i Sverige som det gjorts provsågningar på och är nu dags att hitta användningsområden till. Syftet med denna studie var att undersöka skillnaden i utbyte mellan contortatall och gran (Picea abies) efter hyvling. Målet var att undersöka om sidobrädor av contortatall kan vara ett substitut till sidobrädor av gran vid hyvling ämnat för den amerikanska marknaden.Efter skanning av brädor samt manuell visuell sortering visade det sig att 92 % av granbrädorna var utan defekt medan 24 % av contortatallen var det. 34 % av contortatallen nedklassades för hål och 3 % av granen. Slutsatsen av studien visar att mängden och storleken på kvistarna är ett problem för contortatallvirket. För att få ett högkvalitativt virke behövs en djupare översyn av tillvägagångssättet för torkning och trädens tillväxtförhållanden.