scholarly journals Relation between selected indicators of forest stand diversity and quality of timber production in young stands aged up to 40 years

2013 ◽  
Vol 59 (No. 12) ◽  
pp. 503-513 ◽  
Author(s):  
J. Merganič ◽  
R. Marušák ◽  
K. Merganičová ◽  
R. Stolariková ◽  
L. Tipmann

The present study examines the relationships between the indicators of tree species and structural diversity and the quality of timber production in young even-aged forest stands with the average age below 40 years. The study is based on the forest inventory data from University Forest Enterprise Kostelec nad Černými lesy, Czech Republic, performed from 2009 to 2011. The examined young stands were recorded in 256 sample plots representing 21.2% of the enterprise area. On each sample plot, we quantified 171 partial biodiversity indicators. In total, we analysed 16,416 different variants of the relationship between the diversity indicator and the quality of timber production. The analysis revealed that similarity indicators such as the range of tree heights, Canberra distance, Bray and Curtis index, and index of species evenness and heterogeneity were the most frequent basic indicators occurring in significant correlations. The results indicate a positive relationship between the proportions of assortments in quality classes I to IV and stand diversity expressed by the number of tree species and Canberra distance.

2001 ◽  
Vol 152 (5) ◽  
pp. 169-176 ◽  
Author(s):  
Monika Frehner

The article shows that knowledge of the site of a particular forest stand, together with research results and experience, can provide information that is important for the cultivation of mountain forests, including knowledge of the composition of the tree species and the structure and growth capacity of natural forest. Furthermore, certain sites can, thus, be characterized by factors that influence restocking, such as snow mould,lush ground vegetation or low temperature. The guidelines«minimale Pflegemassnahmen» – «Minimal tending of protection forests» (WASSER und FREHNER, 1996) are based on this principle. For individual sites, warnings about natural dangers such as rock fall or statements concerning nature conservation can be made (e.g., the occurrence of tree species, suitability as a biotope for Capercaille). In conclusion, two research projects on the relationship between site and natural dangers will be presented.


2011 ◽  
Vol 183-185 ◽  
pp. 220-224
Author(s):  
Ming Ze Li ◽  
Wen Yi Fan ◽  
Ying Yu

The forest biomass (which is referred to the arbor aboveground biomass in this research) is one of the most primary factors to determine the forest ecosystem carbon storages. There are many kinds of estimating methods adapted to various scales. It is a suitable method to estimate forest biomass of the farm or the forestry bureau in middle and last scales. First each subcompartment forest biomass should be estimated, and then the farm or the forestry bureau forest biomass was estimated. In this research, based on maoershan farm region, first the single tree biomass equation of main tree species was established or collected. The biomass of each specie was calculated according to the materials of tally, such as height, diameter and so on in the forest inventory data. Secondly, each specie’s biomass and total biomass in subcompartment were calculated according to the tree species composition in forest management investigation data. Thus the forest biomass spatial distribution was obtained by taking subcompartment as a unit. And last the forest total biomass was estimated.


2011 ◽  
Vol 69 (2) ◽  
pp. 195-205 ◽  
Author(s):  
Marie Charru ◽  
Ingrid Seynave ◽  
François Morneau ◽  
Michaël Rivoire ◽  
Jean-Daniel Bontemps

2016 ◽  
Vol 62 (No. 3) ◽  
pp. 97-106 ◽  
Author(s):  
J. Merganič ◽  
K. Merganičová ◽  
R. Marušák ◽  
L. Tipmann ◽  
L. Šálek ◽  
...  

2010 ◽  
Vol 259 (4) ◽  
pp. 778-785 ◽  
Author(s):  
C.W. Woodall ◽  
C.M. Oswalt ◽  
J.A. Westfall ◽  
C.H. Perry ◽  
M.D. Nelson ◽  
...  

2018 ◽  
pp. 65-75 ◽  
Author(s):  
S. G. Baral ◽  
H. Vacik ◽  
B. B. K. Chhetri ◽  
K. Gauli

This paper explores the application of forest inventory to design silvicultural operations and its implementation to community forests. Four-time series forest inventory data (2005, 2010, 2013 and 2016) of Terai community forests were analysed, focusing on the type and size of tree removals from the forests. In addition, content analysis of the management plans of the forests was carried out and consultations were held with key informants. Though the forest inventory was prepared during the preparation of management plans, the results did not provide proper guidance on the selection of silvicultural operations, which were decided without a clear definition of the management objectives. They were very generic and largely ignored site-specific forest stand conditions. Most commonly practised silvicultural operations were cleaning and selective harvesting, which were similar for all forest blocks, though they varied in respect of forest stand conditions. The time series analysis of the inventory data showed that pole-sized trees were consistently removed in all four periods and emphasis was on extracting good quality trees without considering its effects on the stand. The study concludes that the current forest inventory is not very relevant in making a choice about silvicultural operations and the current practices might cause economic and ecological losses. Hence, we argued for identifying minimum forest management requirement necessary for the sustainable forest management that the silvicultural operations should be decided based on the management objectives and conditions of the forest, considering the ecological and economic value of the forest. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page : 65-75


2019 ◽  
Vol 28 (9) ◽  
pp. 1259-1271 ◽  
Author(s):  
Thibaut Fréjaville ◽  
Bruno Fady ◽  
Antoine Kremer ◽  
Alexis Ducousso ◽  
Marta Benito Garzón

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