Post-harvest height growth of Norway spruce seedlings in northern Finland peatland forest canopy gaps and comparison to partial and complete canopy removals and plantations

The paper evaluates the results of a 6-year-monitoring of the eco-hydrological influence of Norway spruce (Picea abies (L.) Karst.) and European beech (Fagus silvatica L.) forest stands on the hydro-physical properties of snow cover. The experiment was carried out in the artificially regenerated 20-25-year-old forest stands approaching the pole timber stage in the middle mountain region of the Polana Mts. - Biosphere reserve situated at about 600 m a.s.l. during the period of maximum snow supply in winters of years 2004 - -2009. Forest canopy plays a decisive role at both the snow cover duration and spring snow melting and runoff generation. A spruce stand is the poorest of snow at the beginning of winter. High interception of spruce canopy hampers the throughfall of snow to soil. During the same period, the soil surface of a beech stand accumulates greater amount of snow. However, a spruce stand accumulates snow by creating snow heaps during the periods of maximum snow cumulation and stand´s microclimate slows down snow melting. These processes are in detail discussed in the paper. The forest stands of the whole biosphere reserve slow down to a significant extent both the snow cover melting and the spring runoff of the whole watershed.

Download Full-text

Weather-sensitive height growth modelling of Norway spruce using repeated airborne laser scanning data

Agricultural and Forest Meteorology ◽

10.1016/j.agrformet.2021.108568 ◽

2021 ◽

Vol 308-309 ◽

pp. 108568

Author(s):

Luiza Tymińska- Czabańska ◽

Jarosław Socha ◽

Paweł Hawryło ◽

Radomir Bałazy ◽

Mariusz Ciesielski ◽

...

Keyword(s):

Norway Spruce ◽

Laser Scanning ◽

Height Growth ◽

Airborne Laser Scanning ◽

Growth Modelling ◽

Airborne Laser

Download Full-text

Bryophytes in fir waves: Forest canopy indicator species and functional diversity decline in canopy gaps

Journal of Vegetation Science ◽

10.1111/jvs.12718 ◽

2019 ◽

Vol 30 (2) ◽

pp. 235-246

Author(s):

Monica B. Berdugo ◽

Martin Dovciak

Keyword(s):

Functional Diversity ◽

Indicator Species ◽

Forest Canopy ◽

Canopy Gaps

Download Full-text

Site Index Curves for Norway Spruce in Southern Ontario1

Northern Journal of Applied Forestry ◽

10.1093/njaf/6.1.23 ◽

1989 ◽

Vol 6 (1) ◽

pp. 23-26 ◽

Cited By ~ 1

Author(s):

Andrew M. Gordon ◽

Peter A. Williams ◽

Edward P. Taylor

Keyword(s):

Norway Spruce ◽

Soil Texture ◽

Sandy Soils ◽

Site Index ◽

Height Growth ◽

Stem Analysis ◽

Mean Values ◽

Breast Height ◽

Drainage Class ◽

The Mean

Abstract Four dominant or codominant Norway spruce trees from each of 55 sites were destructively sampled and the annual height growth determined by stem analysis. The sampled sites were stratified by soil textural class (coarse, medium, and fine) and depth to distinct mottling (0-16, 16-40, and 40 in.). Two sets of an-amorphic site index curves were constructed using a total age of 30 years (SI30), and breast height age of 25 years (SIBH25) as base ages. The mean SI30 from Ontario (53 ft) was found to be 17.8% higher than the mean values published from Vermont (45 ft) and currently used in Ontario. SIBH25 values had a range of 34.6 to 74.8 ft with a mean of 55.3 ft. Analysis of variance showed significant differences in SIBH25 due to soil texture and drainage class, and in years to breast height (BH) due to drainage class. SIBH25 was highest on sites with loamy soils and distinct mottling at 16-40 in. It took an average of 6.5 years for seedlings to reach BH with a range of 3 to 12 years. Years to BH was lowest on sites with sandy soils and those with distinct mottling below 40 in. North. J. Appl. For. 6(1):23-26, March 1989.

Download Full-text