The role of a stand dynamics model in the spruce budworm decision support system

1996 ◽  
Vol 26 (10) ◽  
pp. 1731-1741 ◽  
Author(s):  
David A. MacLean
Keyword(s):  
Decision Support ◽  
Forest Management ◽  
Spruce Budworm ◽  
Stand Dynamics ◽  
Published Data ◽  
Management Options ◽  
Forest Management Planning ◽  
Forest Development ◽  
Forest Inventories ◽  
Management Plans

Stand dynamics models that predict effects of pests on forest development are key components of pest and forest management planning decision support systems (DSS). Such stand models are required to quantify the marginal effects and costs–benefits of alternative strategies, and thereby to assist in evaluating management options and defining tactics and strategies. The spruce budworm (Choristoneurafumiferana (Clem.)) DSS allows users to project forest inventories under alternative budworm and protection (insecticide use) scenarios, to plan protection programs based on marginal timber supply benefits, to incorporate budworm effects on stand or forest development into management plans, and to evaluate silvicultural and forest management alternatives to limit damage. The STAMAN stand model is an integral part of the spruce budworm DSS, used to calculate stand impact matrices used by two DSS components. Simulations, using STAMAN, for 13 classes of spruce–fir stands under various levels of constant, cumulative defoliation for a 10-year period, resulted in predicted volume reductions of 1–6% with 20% defoliation, 27–42% with 60% defoliation, and 82–99% with 90% defoliation. Another set of simulations using a 30-year cyclical defoliation pattern (including 5 years of light defoliation, 8 years of moderate–severe defoliation, and 17 years of very light or nil defoliation) resulted in volume reductions similar to published data for actual spruce budworm outbreaks.

scholarly journals Stand Structural Characteristics Are the Most Practical Biodiversity Indicators for Forest Management Planning in Europe

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 343 ◽  
Author(s):  
Marija Ćosović ◽  
Miguel Bugalho ◽  
Dominik Thom ◽  
José Borges
Keyword(s):  
Forest Management ◽  
Data Collection ◽  
Structural Characteristics ◽  
Canopy Openness ◽  
Biodiversity Indicators ◽  
Management Planning ◽  
Forest Management Planning ◽  
Forest Inventories ◽  
Large Trees ◽  
Management Plans

Including biodiversity assessments in forest management planning is becoming increasingly important due to the importance of biodiversity for forest ecosystem resilience provision and sustainable functioning. Here we investigated the potential to include biodiversity indicators into forest management planning in Europe. In particular, we aimed to (i) identify biodiversity indicators and data collection methods for biodiversity assessments at the stand and landscape levels, and (ii) evaluate the practicality of those indicators for forest management planning. We performed a literature review in which we screened 188 research studies published between 1990 and 2020. We selected 94 studies that fulfilled the inclusion criteria and examined in more detail. We considered three aspects of biodiversity: structure, composition, and function, and four forest management categories: unmanaged, managed, plantation, and silvopastoral. We used three criteria to evaluate the practicality of forest biodiversity indicators: cost-effectiveness, ease of application, and time-effectiveness. We identified differences in the practicality of biodiversity indicators for their incorporation into management plans. Stand-level indicators are more practical than landscape-level indicators. Moreover, structural biodiversity indicators (e.g., large trees, canopy openness, and old forest stands) are more useful in management plans than compositional indicators, as these are easily observable by non-professionals and can be obtained by forest inventories. Compositional indicators such are vascular plants, fungi, bryophyte, lichens, and invertebrate species are hard to identify by non-professionals and thus are impractical. Functional indicators (e.g., nutrient cycling) are not sufficiently addressed in the literature. Using recently updated existing databases (e.g., national forest inventories and bird atlases) is very time and cost-efficient. Remote sensing and other technology (e.g., smartphone applications) are promising for efficient data collection in the future. However, more research is needed to make these tools more accurate and applicable to a variety of ecological conditions and scales. Until then, forest stand structural variables derived from inventories can help improve management plans to prepare European forests towards an uncertain future.

scholarly journals Utilisation of mathematical models and growth simulators for creating forest management plans and planning the tending felling

2012 ◽  
Vol 50 (No. 8) ◽  
pp. 374-381
Author(s):  
R. Šmudla
Keyword(s):  
Forest Management ◽  
Data Collection ◽  
Mathematical Models ◽  
Management Planning ◽  
Forest Management Planning ◽  
Forest Development ◽  
Management Plans ◽  
Commercial Species ◽  
Growth Simulator

The paper describes modelling of forest development and its utilisation for forest management planning, specifically modelling of growth mensurational variables of the two main commercial species – spruce and beech. Further, utilisation of growth simulator SILVA 2.2 for modelling the tending felling is described, focusing on data collection and main outputs of the modelling. Researched methodology was applied to a sample forest near the Racková municipality, property of Kroměříž Municipal Forests.

A GIS-BASED DECISION SUPPORT SYSTEM FOR FOREST MANAGEMENT PLANS IN TURKEY

2010 ◽  
Vol 9 (7) ◽  
pp. 929-937 ◽  
Author(s):  
Fatih Sivrikaya ◽  
Emin Zeki Baskent ◽  
Ugur Sevik ◽  
Caner Akgul ◽  
Ali Ihsan Kadiogullari ◽  
...  
Keyword(s):  
Decision Support ◽  
Forest Management ◽  
Decision Support System ◽  
Support System ◽  
Management Plans

scholarly journals Coppice Forest Management Planning and the Regeneration Potential of Pure and Mixed Oak Coppice Forests in North Macedonia

2019 ◽  
Vol 10 (2) ◽  
pp. 165-172
Author(s):  
Pande Trajkov ◽  
Tomislav Dubravac ◽  
Zdravko Trajanov ◽  
Kiril Sotirovski ◽  
Ljupco Nestororvski ◽  
...  
Keyword(s):  
Forest Management ◽  
Forest Cover ◽  
Direct Conversion ◽  
Field Trials ◽  
Quercus Petraea ◽  
Mixed Stands ◽  
Forest Management Planning ◽  
Clear Cutting ◽  
Management Plans ◽  
Experimental Plots

Background and Purpose: Coppicing is the most widely used silvicultural system in North Macedonia and coppice forests together with shrubs cover cca. 69% of the forest cover area. Pure and mixed stands of oak coppice forests alone cover about 50% of the total forest area subject to current Forest Management Plans. In general, coppices are routinely managed, especially when coppicing as a system is planned to be continued. However, sustainability can be threatened if attention is not paid regarding the age of trees/stands and the presence of undesired tree species. The purpose of this study was to determine: (1) quantitative and qualitative aspects of planned management activities in oak coppices throughout the country, (2) the resprouting potential of over-mature oak coppices, and (3) their potential for generative regeneration. Materials and Methods : We analyzed all official forest management plans in the country, in order to assess planned activities and the methods of management. Additionally, 21 experimental plots were set in order to determine the resprouting potential of over-mature (85 to 95 years) coppices of Quercus petraea and Q. frainneto which previously have been subject of clear-cutting. We took a total count of sprouts on all experimental plots, while generative regeneration seedlings were counted on 4 schematically positioned subplots in each experimental plot. Sprouts and generative seedlings were categorized by height. Results and Conclusions: According to the data from forest management plans, coppicing is planned to remain as a management system on 401,636 ha, of the total of 450,975 ha of oak coppice forests. Indirect conversion to high forests is planned on 39,137 ha, while direct conversion with substitution is planned for 10,202 ha. In field trials, resprouting was registered on only 38% of the stools. Generative regeneration was recorded in both oak species in numbers which indicate good potential for conversion of oak coppice stands into high forests by seed felling. However, numerous sprouts of other species ( Corylus avellana, Fraxinus ornus, Acer heldreichii), which reach up to 3 meters in height within two seasons, are potentially dangerous for dominating oak seedlings.

scholarly journals Web-Based Forest Resources Management Decision Support System

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1079 ◽  
Author(s):  
Marco Marto ◽  
Keith Reynolds ◽  
José Borges ◽  
Vladimir Bushenkov ◽  
Susete Marques ◽  
...  
Keyword(s):  
Decision Support ◽  
Ecosystem Services ◽  
Forest Management ◽  
Decision Support System ◽  
Support System ◽  
Remote Access ◽  
Web Based ◽  
Management Planning ◽  
Forest Management Planning ◽  
The Web

In this paper, we present a web-based decision support system (DSS)—wSADfLOR—to facilitate the access of stakeholders to tools that may contribute to enhancing forest management planning. The emphasis is on a web-based architecture and a web graphic user interface (wGUI) that may effectively support the analysis of trade-offs between ecosystem services in order to address participatory and sustainable forest management objectives. For that purpose, the wGUI provides remote access to a management information system, enabling users to analyze environmental and biometric data and topological information as well. Moreover, the wGUI provides remote access to forest simulators so that users may define and simulate prescriptions such as chronological sequences of management options and the corresponding forest ecosystem services outcomes. Remote access to management planning methods is further provided so that users may input their objectives and constraints. The wGUI delivers information about tradeoffs between ecosystem services in the form of decision maps so that users in different locations may negotiate bundles of ecosystem services as well as the plan needed to provide them. The multiple criteria programming routines provide proposals for management plans that may be assessed further, using geographical and alphanumeric information provided by the wGUI. Results for an application to a forested landscape extending to 14,388 ha are presented and discussed. This landscape provides several ecosystem services and the development of its management plan involves multiple stakeholders. Results show that the web-based architecture and the wGUI provide effective access for stakeholders to information about the forest management planning area and to decision support tools that may contribute to addressing complex multi-objective and multiple-decision-maker management planning contexts. They also highlight that the involvement and participation of stakeholders in the design of the web-based architecture contributes to assuring the quality and the usability of the system.

scholarly journals Forest management strategies to reduce spruce budworm damage in the Fundy Model Forest

1996 ◽  
Vol 72 (4) ◽  
pp. 399-405 ◽  
Author(s):  
David A. MacLean
Keyword(s):  
Decision Support ◽  
Forest Management ◽  
Decision Support System ◽  
Support System ◽  
Tree Mortality ◽  
Choristoneura Fumiferana ◽  
Management Strategies ◽  
Spruce Budworm ◽  
Stand Age ◽  
Timber Supply

Spruce budworm (Choristoneura fumiferana) outbreaks cannot be prevented, but the amount of damage that occurs can be managed. Tree species, stand age, hardwood content, and drainage class, as well as the outbreak severity and length, determine the amount of tree mortality during budworm outbreaks. Silviculture and forest management can be used to reduce the incidence of the most damaged stand types across the landscape. The amount of defoliation in mixed balsam fir-hardwood stands is strongly negatively related to hardwood content, especially with hardwoods > 40%. The Spruce Budworm Decision Support System (DSS) links models of stand and forest response to budworm outbreaks and inventory interpretation to a GIS, and can be used to evaluate effects of outbreaks and management on forest structure and timber supply. An example using the Spruce Budworm DSS for a portion of the Fundy Model Forest indicated that losses from a future budworm outbreak could be reduced 34% by directing harvesting and silviculture towards conversion of one-half of the most vulnerable stand types into low susceptibility or non-susceptible species. Key words: decision support system, vulnerability, silviculture, insect damage

MANAGEMENT PLANS—THE PATH TO THE FUTURE

1962 ◽  
Vol 38 (1) ◽  
pp. 25-33
Author(s):  
Murray B. Morison
Keyword(s):  
Forest Management ◽  
Management Unit ◽  
Management Units ◽  
Local Conditions ◽  
Management Planning ◽  
Forest Management Planning ◽  
The Future ◽  
Management Plans ◽  
New Procedures ◽  
Forestry Practice

The Department of Lands and Forests of the Province of Ontario, has completed one cycle in forest management planning and inventory compilation which was initiated in 1946.As a result of the experience gained since 1946 by the forestry staff, a nucleus of which has been working continually since the beginning of the original program, the Department now has what is believed to be a satisfactory revision which will obtain realistic management plans. These plans will have guiding objectives in line with good forestry practice and will also recognize the limitations imposed by social and economic conditions.In 1958, the Department commenced the re-inventory and is applying the new procedures to new photography, ground sampling and compilation. The revision of management plans is also proceeding as an integral part of the total program.This paper describes some of the factors involved in making decisions for management plans, it refers to the new inventory procedures, and highlights as an example, the plan for the Englehart Management Unit. Other Management units are briefly described to indicate some of the variations necessary in the application of plans to meet local conditions.

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