scholarly journals Comparative Analysis of Throughfall Observations in six Different Forest Stands: Influence of Seasons, Rainfall‐, and Stand Characteristics

2021 ◽  
Author(s):  
Theresa Blume ◽  
Lisa Schneider ◽  
Andreas Güntner
Keyword(s):  
Comparative Analysis ◽  
Forest Stands ◽  
Stand Characteristics

Erratum to “Comparative analysis of IKONOS, SPOT, and ETM+ data leaf area index estimation in temperature coniferous and deciduous forest stands” [Remote Sensing of Environment 102 (2006) 161–175]

2006 ◽  
Vol 103 (4) ◽  
pp. 497 ◽  
Author(s):  
Kamel Soudani ◽  
Christopher François ◽  
Guerric le Maire ◽  
Valérie Le Dantec ◽  
Eric Dufrêne
Keyword(s):  
Remote Sensing ◽  
Comparative Analysis ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Deciduous Forest ◽  
Forest Stands ◽  
Area Index ◽  
Index Estimation

scholarly journals Regeneration under a shelterwood system of spruce-dominated forest stands at middle altitudes

2008 ◽  
Vol 53 (No. 10) ◽  
pp. 467-475 ◽  
Author(s):  
J. Souček
Keyword(s):  
Forest Stand ◽  
Control Plot ◽  
Annual Rings ◽  
Forest Stands ◽  
Pronounced Increase ◽  
Diameter Increment ◽  
Varied Structure ◽  
Mature Stand ◽  
Commercial Species ◽  
Stand Characteristics

An experiment with regeneration under the shelterwood of spruce-dominated mature stand was established at middle altitudes of the Žďárské vrchy Hills in 1971. The paper brings a comparison of the development of basic forest stand characteristics for the plot under shelterwood and for the control plot. Analyses of annual rings demonstrated a higher diameter increment of sample trees on the plot under shelterwood, a more pronounced increase in the increment being however observed only 12 years after release. A subsequent forest from the combined regeneration occurs on 88% of the plot under shelterwood and on 67% of the control plot. The required proportion of beech and fir is established on both plots with spruce as the main commercial species having been retained. The subsequent forest stand is differentiated in terms of height and diameter and the two plots exhibit a rather varied structure.

scholarly journals Determining basic forest stand characteristics using airborne laser scanning in mixed forest stands of Central Europe

2018 ◽  
Vol 11 (1) ◽  
pp. 181-188 ◽  
Author(s):  
R Smreček ◽  
Z Michnová ◽  
I Sačkov ◽  
Z Danihelová ◽  
M Levická ◽  
...  
Keyword(s):  
Central Europe ◽  
Laser Scanning ◽  
Mixed Forest ◽  
Forest Stand ◽  
Airborne Laser Scanning ◽  
Forest Stands ◽  
Airborne Laser ◽  
Stand Characteristics

Comparative analysis of two approaches to large-scale mapping of forest vegetation in the Southern Nechernozemye of Russia

2020 ◽  
pp. 3-23
Author(s):  
Yu. A. Semenishchenkov ◽  
R. S. Korsikov
Keyword(s):  
Comparative Analysis ◽  
Plant Communities ◽  
Large Scale ◽  
Forest Vegetation ◽  
Indigenous Species ◽  
Forest Communities ◽  
Forest Stands ◽  
Edaphic Conditions ◽  
Floristic Classification ◽  
Forest Conditions

The results of the comparative analysis of traditional forest typology data and the data of floristic classification by the J. Braun-Blanquet approach for large-scale mapping of forest vegetation from the Southern Nechernozemye of Russia are presented. 3 model forest areas located in the forestries in borders of different botanic-geographical districts with specific climatic and edaphic conditions have been chosen to make the comparative analysis of cartographic materials (Bryansk and Smolensk Regions). A comparison of existing afforestation plans and created geobotanical maps demonstrates the difference in the number of recognized typological units. In all cases, a smaller number of units are noted for the geobotanical maps with a scale 1 : 25 000. A decrease in the number of typological units can be explain by the lack of information on the age of tree stands. Another reason is, probably, the assignment of some forest stands with the predominance of different indigenous species to a single association. However, the same typological units, distinguished by the predominance of tree species, may correspond to different units of floristic classification, which may increase the number of typological units on the geobotanical map. Some features of the Braun-Blanquet approach such as the allocation of units, primarily based on a comparison of the floristic composition of plant communities, allows attributing both natural stands and forest cultures to a single syntaxon. This also reduces the number of typological units on the geobotanical map. The plans of afforestation show the present-day species composition and the age of the studied stands, but the dynamic interrelations of forest communities are not reflected there. Therefore, it is more effective to reflect the dynamics of vegetation of forest communities in accordance with the methodology adopted when creating geobotanical maps. In this case, the succession state of communities and their links to classification units of higher ranks has been taken into account by the allocation of temporary facies with the predominance of small-leaved species at the site of indigenous broad-leaved or coniferous forests. The deductive approach with the identification of non-rank «communities» also makes it possible to separate into separate syntaxa and time-unstable, unformed or poorly floristic communities. Typically, such forests are formed by coniferous cultures in the zone of deciduous forests. The unformed «semi-forest» communities in the lowland swamps are also placed into the same category. They are often formed after felling, initiating or intensifying bogging under conditions of fluctuating moisture. The use of a single colorimetric scheme for forest stands in different climatic and edaphic conditions, reflected in the TLU (forest conditions) system, can be considered not quite correct. Stands with the predominance of the same species can correspond to different zonal-conditioned TLUs. At the same time, communities of some syntaxomomical taxa of floristic classification can be formed in different TLUs and their diversity corresponds to the width of the ecological amplitude of the types of plant communities. The more stenotopic communities, the smaller number of TLUs corresponding to their habitats. The afforestation plans and geobotanical maps can be used by different ways in forestry. The traditional afforestation plans are widely used in forestry planning. However, the geobotanical map supplemented with information on the dynamic relationships of stands allows making more efficient prediction of scenarios of forest stand development under known forest conditions. In addition, cartographic materials on the proposed geobotanical basis reflect the general botanical and geographical trends of vegetation, and the syntaxa of the floristic classification always have a certain chorological content, thus, they can be used as zonal-climatic indicators. This feature is reflected in their compliance with TLU, which are specifically distinguished for different natural zones.

scholarly journals Respiration of wood ant nest material affected by material and forest stand characteristics

Biologia ◽  
2013 ◽  
Vol 68 (6) ◽  
Author(s):  
Veronika Jilkova ◽  
Timo Domisch ◽  
Zuzana Horicka ◽  
Jan Frouz
Keyword(s):  
Carbon Content ◽  
C:N Ratio ◽  
Mineral Soil ◽  
Forest Stand ◽  
Nest Material ◽  
Forest Stands ◽  
Ant Nests ◽  
Ant Nest ◽  
Different Parts ◽  
Stand Characteristics

AbstractWe studied differences in respiration of materials from different parts of wood ant nest (top, bottom, and rim) and from the nest surroundings (humus layer and mineral soil). Samples were taken from 8 wood ant (Formica aquilonia) nests in each of the two types of forest (birch and pine) in eastern Finland. The differences were related to material and forest stand characteristics (i.e., moisture, pH, carbon content, and C:N ratio). As a result, the highest respiration per g DW was measured at the top of ant nests in the birch forest. However, respiration did not significantly differ between the parts of ant nests in the pine forest. Respiration of the humus layers in both forest stands was on average higher, whereas respiration of the mineral soils in both forest stands was lower in comparison with respiration of the nest materials. The respiration per g C did not show any significant differences between different parts of nests and surrounding soil. The most important factors influencing respiration of the materials appeared to be moisture, carbon content, and pH. In conclusion, respiration of wood ant nest material is affected by the specific material and forest stand characteristics.

scholarly journals Comparative analysis of IKONOS, SPOT, and ETM+ data for leaf area index estimation in temperate coniferous and deciduous forest stands

2006 ◽  
Vol 102 (1-2) ◽  
pp. 161-175 ◽  
Author(s):  
Kamel Soudani ◽  
Christophe François ◽  
Guerric le Maire ◽  
Valérie Le Dantec ◽  
Eric Dufrêne
Keyword(s):  
Comparative Analysis ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Deciduous Forest ◽  
Forest Stands ◽  
Area Index ◽  
Index Estimation

1207: Failed Pyeloplasty in Children: Comparative Analysis of Retrograde Endopyelotomy VS. Re-do Pyeloplasty

2007 ◽  
Vol 177 (4S) ◽  
pp. 398-398
Author(s):  
Luis H. Braga ◽  
Joao L. Pippi Salle ◽  
Sumit Dave ◽  
Sean Skeldon ◽  
Armando J. Lorenzo ◽  
...  
Keyword(s):  
Comparative Analysis
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