Modelling long-term cation supply in acidified forest stands

1993 ◽  
Vol 80 (3) ◽  
pp. 209-221 ◽  
Author(s):  
Per Warfvinge ◽  
Ursula Falkengren-Grerup ◽  
Harald Sverdrup ◽  
Bent Andersen
Keyword(s):  
Forest Stands

Transpiration of trees and forest stands: short and long-term monitoring using sapflow methods

1996 ◽  
Vol 2 (3) ◽  
pp. 265-274 ◽  
Author(s):  
A. GRANIER ◽  
P. BIRON ◽  
N. BREDA ◽  
J.-Y. PONTAILLER ◽  
B. SAUGIER
Keyword(s):  
Forest Stands ◽  
Short And Long Term ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals Tree shape and form in ancient coppice woodlands

2017 ◽  
Vol 10 (2) ◽  
pp. 49-62 ◽  
Author(s):  
Petr Maděra ◽  
Tomáš Slach ◽  
Luboš Úradníček ◽  
Jan Lacina ◽  
Linda Černušáková ◽  
...  
Keyword(s):  
Tree Species ◽  
Field Survey ◽  
Scientific Literature ◽  
Forest Stands ◽  
Tree Shape ◽  
Lack Of Information ◽  
Basic Features

Abstract Ancient coppice woodlands are coppice-originated forest stands with a long-term continual development, and with the preserved typical natural and historic elements of old sprout forests. Prominent natural elements in the ancient coppice woodlands are namely old coppice stools. There is, in scientific literature, lack of information about features of ancient coppice stools. Therefore, our contribution aims to describe shape and form of ancient coppice stools, including the most important microhabitat of coppice woodlands – dendrothelms. Based on field survey of 20 localities of important coppice woodlands we recorded 135 ancient coppice stools of 13 tree species and a total of 80 dendrothelms in 9 tree species. Basic features of ancient coppice stools and dendrothlems were measured and evaluated.

scholarly journals Effect of Mg fertilization on yellowing disease of Norway spruce at higher elevations of the Šumava Mts., Czech Republic

2012 ◽  
Vol 52 (No. 10) ◽  
pp. 474-481 ◽  
Author(s):  
S. Vacek ◽  
V. Podrázský ◽  
M. Hejcman ◽  
J. Remeš
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Fertilizer Application ◽  
Forest Stands ◽  
Commercial Fertilizer ◽  
Mg Deficiency ◽  
Vegetation Zones ◽  
Yellowing Disease ◽  
Set Up

Norway spruce yellowing and defoliation caused by Mg deficiency was frequently recorded on many sites of the &Scaron;umava Mts. (Bohemian Forest Mts.) since 1980&rsquo;s. A forest experiment aimed at investigation response of spruce to Mg application (commercial fertilizer SILVAMIX<sup>&reg;</sup> Mg NPK) was set up in 1998. Fertilizer was applied manually in a dose of 96.5 kg Mg/ha in spruce (S) and beech-spruce (BS) vegetation altitudinal zones in spring 2000. Immediate decrease of yellowing was revealed in fertilized plots in both vegetation zones and yellowing almost completely disappeared at the end of the investigation in 2005. Further, fertilization resulted in stabile foliation while marked defoliation was reported from control plots in both vegetation zones. Mg deficiency can be effectively eliminated by appropriate fertilizer application. Balanced nutrition contributes to long-term vigour and stability of forest stands.

Long-term cyclic dynamics of simulated riparian forest stands

1992 ◽  
Vol 48 (3-4) ◽  
pp. 217-231 ◽  
Author(s):  
Zhi-Jun Liu ◽  
George P. Malanson
Keyword(s):  
Riparian Forest ◽  
Forest Stands ◽  
Cyclic Dynamics

scholarly journals Improving Economic Management Decisions in Forestry with the SorSim Assortment Model

2019 ◽  
Vol 41 (1) ◽  
pp. 71-83
Author(s):  
Renato Lemm ◽  
Clemens Blattert ◽  
Stefan Holm ◽  
Leo Bont ◽  
Oliver Thees
Keyword(s):  
Optimal Allocation ◽  
Timber Harvest ◽  
Timber Harvesting ◽  
Forest Stands ◽  
Economic Management ◽  
Practical Advantage ◽  
Potential Applications ◽  
Forest Enterprises ◽  
Individual Trees

The sustainable supply of timber is one of the most important forest ecosystem services and a decisive factor determining the long-term profitability of forest enterprises. If timber production is to be economically viable, there must always be a way to analyse forest stands and trees felled for exploitation with regard to the wood assortments they contain. Only then can the expected timber yields, achieved by various silvicultural strategies or actions and different sorting options, be quantified with sufficient accuracy. The SorSim assortment simulator was developed for forest practitioners and forest scientists in Switzerland to realistically simulate the sorting of individual trees and entire forest stands based on defined specifications. SorSim has a simple user interface and comes in a number of different language versions (G, E, F). The software is implemented in Java, making it platform-independent. It can be downloaded for free at (https://www.wsl.ch/en/projects/sortimentsimulator-sorsim.html). This article provides an overview of how the simulator works and demonstrates its potential applications based on a practical and a scientific example. A particular practical advantage is that the composition of the assortments of the planned harvests can be estimated according to quantity and value. When used in strategic planning and especially in research, SorSim provides a basis for analysing either long-term developments in yields from forest stands or silvicultural treatment methods. Based on an even-aged and a selection forest stand, the scientific example shows how strongly the assessment of the advantageousness of two different silvicultural strategies depends on the time when the calculation was made (using historical and current assortment revenues and timber harvesting costs). In particular, the combination of SorSim with timber harvest productivity models enables differentiated forest economic insights. Various approaches for value-based optimisation in the sorting of individual trees and for the optimal allocation of harvesting activities to defined customer demands are currently being examined as further SorSim developments.

scholarly journals Ancient Coppice Woodlands in the Landscape of the Czech Republic

2017 ◽  
Vol 9 (4) ◽  
pp. 617-646
Author(s):  
Antonín Buček ◽  
Linda Černušáková ◽  
Michal Friedl ◽  
Martin Machala ◽  
Petr Maděra
Keyword(s):  
Czech Republic ◽  
Cultural Heritage ◽  
Animal Species ◽  
Forest Stands ◽  
The Czech Republic

Abstract Ancient coppice woodlands are forest stands of coppice origin with a long-term continual development and preserved typical natural and historic elements of old coppices. Significant natural elements in ancient coppices include polycormons of coppice shoots, pollard trees, trees with holes, dendrotelms, reserved trees, ecotones, glades and significant plant and animal species. Significant historic elements of localities with ancient coppices include archaeological monuments, boundary ditches and walls, boundary stones, boundary trees, myths and legends, sacral objects, old roads and paths, technical objects and plough land remainders. The paper presents differentiation of assumptions for the occurrence of ancient coppices in the territory of the Czech Republic using the COPF coefficient and examples of results from basic regional inventory (Kuřim region) and detailed local survey (locality Lebeďák) of coppice-originated forests. The extinction of the phenomenon of ancient coppice woodlands would mean irreparable impoverishment of the natural and cultural heritage.

scholarly journals Retention Forestry Supports Bird Diversity in Managed, Temperate Hardwood Floodplain Forests

Forests ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 300 ◽  
Author(s):  
Ivo Machar ◽  
Martin Schlossarek ◽  
Vilem Pechanec ◽  
Lubos Uradnicek ◽  
Ludek Praus ◽  
...  
Keyword(s):  
Hardwood Forests ◽  
Bird Diversity ◽  
Floodplain Forests ◽  
Forest Stands ◽  
Old Growth ◽  
Clear Cutting ◽  
Old Growth Forest ◽  
Oak Trees ◽  
Retention Forestry

The retention forestry approach is considered as one of the potentially effective tools for sustainable forest management for conservation of biodiversity in managed temperate and boreal forests. Retention of old-growth forest structures (e.g., very large old living trees) in forest stands during clear-cutting provides maintenance of key habitats for many old-growth forest interior-species. Most of ecological studies on green tree retention (GTR) consequences for biodiversity have been focused on birds. However, the long-term studies of GTR impacts on forest birds are very poor. In this paper, we focused on assessment of the long-term consequences of leaving legacy oak trees on the cut areas for bird diversity 18–22 years after clear-cutting in managed temperate European hardwood floodplain forests. Results based on bird counting using mapping of bird nesting territories revealed a key importance of legacy oak trees for maintaining bird diversity in the study area. These results are widely applicable for managed temperate hardwood forests with serious dominance of oak (Quercus sp.) in forest stands. Legacy oak trees in this habitat type are keystone structures for bird diversity. Retention approach focused on these trees is potentially an important conservation tool for preserving forest bird diversity and other associated species in temperate hardwood forests managed by clear-cutting.

scholarly journals Reproduction of silver fir (Abies alba Mill) forests in the Ukrainian Carpathians

2019 ◽  
Vol 61 (2) ◽  
pp. 156-158 ◽  
Author(s):  
Vasyl Mohytych ◽  
Małgorzata Sułkowska ◽  
Marcin Klisz
Keyword(s):  
Forest Cover ◽  
Abies Alba ◽  
Silver Fir ◽  
Forest Stands ◽  
Artificial Regeneration ◽  
Seed Orchards ◽  
Historical Changes ◽  
Current State

Abstract Existing knowledge of the Ukrainian foresters related to the historical changes and current state of silver fir forests, as well as on the various methods of restoration of such forests in the Ukrainian Carpathians were discussed. Forest cover of fir stands in this region has been diminishing in the last two centuries. Only in the period from 1947 to 1956, the area of fir stands in Ukrainian Carpathians decreased by 38.8%. Currently, the restoration of fir stands in these areas are crucial for Ukrainian forestry. Therefore, the natural as well as artificial regeneration using seeds obtained from seed orchards are currently used. Thus, improving the forest stands’ conditions mostly composed of single-spruce plantations need to be improved through changing the species compositions. However, the restoration of fir stands is time and labour-intensive, and require a long-term strategy.

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