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Showing 1 to 20 of 34 for “"Norway spruce"”.
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Factors affecting soil respiration and its components in silver birch and Norway spruce stands
Mulla CO2 voog ehk mullahingamine moodustab suure osa kogu metsaökosüsteemi hingamisest ja põhjapoolkera kõrgemate laiuskraadide metsad omavad olulist rolli globaalses süsinikuringes, mistõttu on selle voo kvantitatiivne hindamine väga aktuaalne teema. Käesolevas doktoritöös käsitleti kolme uudset …
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The basic density of Scotch pine, Norway spruce, common birch and white birch in southern Finland
Thesis (M.S.)--Michigan State University. Dept. of Forest Products, 1966
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Effects of elevated carbon dioxide concentration and temperature on needle morphology and shoot growth in Norway spruce
… at different heights in 40-year-old field-grown Norway spruce trees at the Flakaliden experimental site in northern Sweden. The present study was a part of a larger experiment examining the long-term morphological and physiological responses of the trees. Elevated T significantly increased SNA …
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An investigation of the durability of UK grown softwood distribution poles CCA-treated by sap-displacement
… of UK grown Corsican pine, Scots pine, Norway spruce and Sitka spruce poles treated with CCA by the high pressure sap-displacement process, was investigated using full size poles in a field site and representative pole sections in an accelerated decay system.<br/><br/>Analysis of cores …
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Nitrogen deposition and nitrification in coniferous forests’
… roots, b) the impacts of (NH4)2SO4 deposition on Norway spruce (Picea abies [L.] Karst) and Scots pine (Pinus sylvestris L.) fine roots, and c) the controls of nitrification in an acid forest soil. The work was part of the CEC project ‘CORE’, investigating the effects of atmospheric pollution on …
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Terpene analysis and transcript profiling of the conifer response to Heterobasidion annosum s.l. infection and Hylobius abietis feeding
… parviporum causes the majority of decay in Norway spruce (Picea abies), both causing severe economic losses. Another significant health problem of Scots pine is caused by Hylobius abietis, the large pine weevil, which damages newly established Scots pine stands. Several defence reactions in …
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Moisture conditions in rain exposed wood joints - Experimental methods and laboratory measurements
… two boards. The measurements were performed on Norway spruce (Picea abies (L.) Karst.) heartwood and sapwood. Both slow grown wood from northern Sweden and fast grown wood from southern Sweden were used in the experiments. The duration of high moisture contents was evaluated for all joints. In …
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Linking Carbon, Nitrogen, And Calcium Cycling In Northeastern U.S. Forests
… matter retention. In chapter 1, I show how Norway spruce, red oak, and sugar maple planted in a common garden influence soil C, N, and Ca pools. Norway spruce had the largest C and N stocks in the forest floor and upper mineral soils. No differences among species were observed in soil …
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Water use of forests along elevation gradients in the Berchtesgaden National Park
… the processes affecting the transpiration of Norway spruce (Picea abies) in the Berchtesgaden National Park along an elevation gradient were investigated. Sapflow and meteorological measurements were carried out during the summer of 2002. For each stand, structural differences (tree height, …
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Nutrient fluxes and soil microbial processes
… the plantation of coniferous stands, especially Norway spruce (Picea abies L. KARST.) with high production potentials has been a common European afforestation strategy. However, the characteristics of Norway spruce such as susceptibility to windfall, forest dieback, drought, as well as soil …
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Resin Flow Induction in Southern Pines: Implications for Defense Against Southern Pine Beetle
… with proper management. Recent research with Norway spruce (Picea abies) has provided additional insight into the chemical pathways involved in host resistance, and has determined that trees exposed to mechanical wounding or fungal inoculation show acquired resistance to future pathogen …
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Potential of temporal and spatial analysis techniques as tools for exploring changes in forest site productivity and following environmental interactions : Finnish-German comparative study
… techniques. Height and radial increments of Norway spruce (Picea abies L. Karst) and Scots pine (Pinus sylvestris L.) were used in to describe and model the sites with clear change of site quality, but also to find relationships between spatial patterns and space-time trajectories in forest …
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Extractives from Sitka spruce
… the distribution of extractives within Sitka spruce trees at different heights in the trunk, as well as the distribution between bark, rootwood, knotwood, heartwood and sapwood. The second aim of the work was to learn about the influence of yield class, site elevation, North/East location and …
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Carbon and nitrogen cycling in watersheds of contrasting vegetation types in the Fernow Experimental Forest, West Virginia
… adjacent watersheds containing (i) planted Norway spruce (Picea abies) and (ii) native Appalachian hardwoods. I also investigated spatial and temporal patterns of dissolved C and N across both watersheds and identified key soil properties associated with NO3-N in soil solution and …
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