110 uppsatser · sida 5 av 8
effekter på produktivitet och kvarvarande bestånd
… was covered with snow. The experiment was conducted in three Scots pine (Pinus sylvestris) dominated stands, which were in need of PCT through removal of deciduous trees. Within each stand, 20 plots (20*20 m) were marked out. The plots were ranked according to stand density and …
effekt av plantstorlek och behandling med metyljasmonat
… attacks by pine weevils, in relation to the size of seedlings of Scots pine (Pinus sylvestris). 2) Determine if application of methyljasmonate (MJ) on seedlings of Scots pine will result in higher resistance towards attacks by pine weevils and/or have any effect on the number of …
… often Norway spruce (Picea abies L. Karst), is planted on poor Scotch pine (Pinus Silvestries) sites and if it affects the yield of Norway spruce? In order to investigate this, data from 29 stands witch had a lower site index than T24 was collected. The investigated stands were …
… of methyl jasmonate (MJ) on growth and defence to pine weevils in Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) and to compare the effect of MJ between pine and spruce. In addition a complementary greenhouse experiment was conducted with the same aims as above …
… Board of Forestry, in Västerbotten, many natural regenerations of Scots pine (Pinus sylvestris) carried out on privately owned forest in the middle of 1990 in Västerbotten have rendered a bad regeneration outcome and will provide a low future forest production. The Board of …
The aim of this study is to describe a number of type stands of lodge pole pine in Norrbotten with respect on stem volume and total biomass. Further questions to answer is if there is stand characteristics that make the stands more suitable for pulpwood in early thinning, or if …
historia, nutid, framtid
… trees, vegetables and flowers grew. Trimmed hedges, pavilions and arbours (Carpinus betulus) surrounded the area and a strict system of walks gave structure to the interior of the garden. In the early 1900th Century, a landscape garden was created close to Listerby River west of …
Tree fiber lengths controls properties like strength and smoothness in paper and other wood products. For forest researchers it is of interest to be able to determine the fiber lengths in standing trees. Mörling et al. (2003), among others, have developed methods to estimate …
… old forest and 3) clear-cut areas. All sites were dominated by Scots pine, Pinus sylvestris, and had the same types of ground vegetation. Field inventories of vegetation coverage and proportion consumed lichens was conducted in study plots in early spring. The snow conditions …
… field and ground layer vegetation in comparable plantations with Scots pine (Pinus sylvestris (L.)) and lodgepole pine (P. contorta Dougl. ex Loud, var. latifolia Engelm). Data was collected at nine of SCA:s experimental sites, established in the beginning of the 1970?s. Scots …
This project was an assignment by Sveaskog and Svenska Skogsplantor. The purpose was to study the effect of protective fabric on the thawing stage of frozen pine seedlings. The function of the protective fabric is that it should protect the seedlings against strong sunlight and …
… from Umeå. I studied the browsing and different damage in young pine forests (Pinus Sylvestris). I also counted droppings from moose to get an index of the moose density. 20 stands were inventoried with 30 plots in each stand. The results showed that fresh browsing on pine had a …
In order to evaluate different afforestation methods for exposed heath lands a field experiment was established in Mosfell on southern Iceland in 1989. The trial comprised six different site preparation methods (control, herbicide application, tree shelters, patch scarification …
… on two alternate hosts; European aspen (Populus tremula) and Scots pine (Pinus sylvestris). Pine twisting rust has five different spore stages, two of them (uredinio- and teliospores) on the leaves of aspen. Injures on aspen caused by pine twisting rust is not extensive. On the …
… is today very dependent on tree species as Norway spruce and Scots pine (Pinus sylvestris), but in recent years the interest for other species has grown. One tree species that has become very interesting is hybrid larch (Larix × eurolepis Henry.), regarded as a fast growing …
