scholarly journals A comparison of two growing stock assessments by stratified sampling– how does accuracy of inventory affect our interpretation of the results

2013 ◽  
Vol 74 (1) ◽  
pp. 17-25
Author(s):  
Marek Jabłoński
Keyword(s):  
Information System ◽  
Forest Management ◽  
Sustainable Forest Management ◽  
The State ◽  
Stratified Sampling ◽  
Age Classes ◽  
Continuous Increase ◽  
Growing Stock ◽  
Age Class ◽  
Management Plans

Abstract Since 1967, when the Polish State Forests were first inventoried, a continuous increase in the volume of growing stock has been recorded. This increase in timber resources is mainly the result of sustainable forest management. However, during this time period inventory methods have been changed a few times and this may have affected the estimates of of wood resources. Since 2011 new instructions have been in place for forest management plans in the Polish State Forests. Despite this, the method of taking forest inventories remained consistent with the previous guidelines. This should allow us to consider changes in the volume of growing stock in relation to inventory methods and their accuracy. In this paper, the results of growing stock estimations based on two assessments made using stratified random sampling are compared. After five years of inventories made for forest management plans, 422 sample plots in two forest districts were measured within 15 strata. Predicted age classes structure at the beginning of successive management plans was used to determine new strata. Data from two inventories were compared on the basis of age class. In addition, data from the State Forests Information System i.e. updated stand level inventory data (on felling and tree growth) were analyzed. Comparing data from the two inventories, in three of seven age classes there was a decrease in the volume of growing stock after a five year period. We found no rational explanation for this. The extent of felling in the analyzed stand was very low, as confirmed by data from State Forests database. However, the largest decrease in volume was 1.5%, whereas the accuracy of growing stock assessment of discussed age class was estimated at some 9% in 2006 and 8% in 2011. Hence, from statistical viewpoint there was no differences between the results of both inventories. However, the differences between volume of growing stock of examined age classes, updated in the Information System of the State Forests and results of assessments by stratified sampling are less than 95% confidence intervals for means of samples. Because of that, updated information could be used in the long term management planning. The results clearly suggest that changes of growing stock, estimated as a difference between two assessments, should be interpreted in conjunction with the accuracy of these inventories. The accuracy of sampling should be also taken into account when creating management plans.

Estimating harvest schedules and profitability under the risk of fire disturbance

2005 ◽  
Vol 35 (6) ◽  
pp. 1378-1388 ◽  
Author(s):  
Brian Peter ◽  
John Nelson
Keyword(s):  
Forest Management ◽  
Sustainable Forest Management ◽  
Fire Suppression ◽  
Management Strategies ◽  
Risk Tolerance ◽  
Fire Disturbance ◽  
Growing Stock ◽  
Modelling Framework ◽  
Management Plans ◽  
Disturbance Model

Incorporating fire disturbance into sustainable forest management plans is necessary to provide estimates of variation around indicators for harvest levels, growing stock, profitability, and landscape structure. A fire disturbance model linked to a harvest simulator was used to estimate the probability of harvest shortages under a range of harvest levels and fire suppression scenarios. Results were then used to estimate "sustainable" harvest levels based on a risk tolerance to harvest shortages and the effects of fire suppression. On a 288 000 ha forest in northeastern British Columbia, the cost of historical fire disturbance was estimated at $4 million per year in terms of foregone harvest profits. Suppressing 98.3% of disturbance events to 30% of their historical size had a value of $1.8 million per year. Higher levels of risk tolerance were associated with increased harvest levels and short-term profits, but as timber inventories were drawn down, average long-term profits became volatile. The modelling framework developed here can help to determine resilient forest management strategies and estimate the future flow and variability of harvest volumes, profits, and landscape conditions.

Forest fuel management for wildfire prevention in Spain: a quantitative SWOT analysis

2014 ◽  
Vol 23 (3) ◽  
pp. 373 ◽  
Author(s):  
Eva Marino ◽  
Carmen Hernando ◽  
Rosa Planelles ◽  
Javier Madrigal ◽  
Mercedes Guijarro ◽  
...  
Keyword(s):  
Forest Management ◽  
Prescribed Burning ◽  
Swot Analysis ◽  
Sustainable Forest Management ◽  
Fire Suppression ◽  
Fuel Management ◽  
Mediterranean Countries ◽  
Forest Fuel ◽  
Management Plans ◽  
Additional Funding

Spain is one of the Mediterranean countries most severely affected by wildfires during the last 30 years, despite enhanced fire suppression efforts. At present, forest area is increasing more in Spain than in any other European country, and also has one of the highest densities of fire ignitions. However, forest management plans have been developed for only 13% of Spanish forest areas. The objective of the present study was to assess the role of forest fuel management for wildfire prevention in Spain. Different fuel management techniques, including mechanical treatments, prescribed burning and controlled grazing, were considered. A quantitative SWOT (Strengths, Weaknesses, Opportunities and Threats) analysis was performed, based on a thorough documentation review and on the opinions of forest fire experts. Results enabled the identification of obstacles that hinder the implementation of effective fuel management, and suggested strategic recommendations to overcome them. New opportunities related to rural development activities (e.g. promotion of ‘FIRESMART’ products) would be highly relevant in fire-prone forest areas. These opportunities should provide additional funding for sustainable forest management and could foster fuel management activities that would directly involve and benefit rural populations.

scholarly journals Pan-European sustainable forest management indicators for assessing Climate-Smart Forestry in Europe

2020 ◽  
pp. 1-10
Author(s):  
G. Santopuoli ◽  
C. Temperli ◽  
I. Alberdi ◽  
I. Barbeito ◽  
M. Bosela ◽  
...  
Keyword(s):  
Forest Management ◽  
Sustainable Forest Management ◽  
Management Strategies ◽  
Forest Policy ◽  
The State ◽  
Forest Damage ◽  
Tree Species Composition ◽  
Mitigation And Adaptation ◽  
Management Indicators ◽  
Using Data

The increasing demand for innovative forest management strategies to adapt to and mitigate climate change and benefit forest production, the so-called Climate-Smart Forestry, calls for a tool to monitor and evaluate their implementation and their effects on forest development over time. The pan-European set of criteria and indicators for sustainable forest management is considered one of the most important tools for assessing many aspects of forest management and sustainability. This study offers an analytical approach to selecting a subset of indicators to support the implementation of Climate-Smart Forestry. Based on a literature review and the analytical hierarchical approach, 10 indicators were selected to assess, in particular, mitigation and adaptation. These indicators were used to assess the state of the Climate-Smart Forestry trend in Europe from 1990 to 2015 using data from the reports on the State of Europe’s Forests. Forest damage, tree species composition, and carbon stock were the most important indicators. Though the trend was overall positive with regard to adaptation and mitigation, its evaluation was partly hindered by the lack of data. We advocate for increased efforts to harmonize international reporting and for further integrating the goals of Climate-Smart Forestry into national- and European-level forest policy making.

scholarly journals Public participation in British Columbia forest management

2010 ◽  
Vol 86 (6) ◽  
pp. 697-708 ◽  
Author(s):  
H W Harshaw
Keyword(s):  
Decision Making ◽  
British Columbia ◽  
Resource Management ◽  
Forest Management ◽  
Public Participation ◽  
Sustainable Forest Management ◽  
Consensus Building ◽  
Management Plans ◽  
Forest Planning And Management ◽  
Planning Processes

Conceptions and challenges of public participation in British Columbia are reviewed to identify those characteristicsof planning processes that serve to benefit or constrain the interests and needs of public stakeholders. Perspectives onpublic participation, including representative and participatory democracies, and approaches to incorporating publicperspectives in decision-making (i.e., shared decision-making, consensus-building, and interest-based negotiation) arepresented to demonstrate the different approaches (and their benefits and challenges) available for providing opportunitiesfor public participation. Lessons from other natural resource management contexts are distilled and used to evaluatethe BC context. Three principal forest planning and management frameworks (the Commission on Resources and theEnvironment, Land and Resource Management Plans, and sustainable forest management certification) are examinedin light of whether meaningful opportunities for public participation were provided.Key words: public participation, British Columbia, Commission on Resources and the Environment, Land and ResourceManagement Plans, sustainable forest management certification

Past, current, and future fire frequencies in Quebec's commercial forests: implications for the cumulative effects of harvesting and fire on age-class structure and natural disturbance-based management

2006 ◽  
Vol 36 (11) ◽  
pp. 2737-2744 ◽  
Author(s):  
Yves Bergeron ◽  
Dominic Cyr ◽  
C Ronnie Drever ◽  
Mike Flannigan ◽  
Sylvie Gauthier ◽  
...  
Keyword(s):  
Forest Management ◽  
Sustainable Forest Management ◽  
Natural Disturbance ◽  
Fire Frequency ◽  
Ecological Functions ◽  
The Past ◽  
Class Distribution ◽  
Age Class ◽  
If Current ◽  
In Fire

The past decade has seen an increasing interest in forest management based on historical or natural disturbance dynamics. The rationale is that management that favours landscape compositions and stand structures similar to those found historically should also maintain biodiversity and essential ecological functions. In fire-dominated landscapes, this approach is feasible only if current and future fire frequencies are sufficiently low compared with the preindustrial fire frequency, so a substitution of fire by forest management can occur without elevating the overall frequency of disturbance. We address this question by comparing current and simulated future fire frequency based on 2 × CO2 and 3 × CO2 scenarios to historical reconstructions of fire frequency in the commercial forests of Quebec. For most regions, current and simulated future fire frequencies are lower than the historical fire frequency, suggesting that forest management could potentially be used to maintain or recreate the age-class distribution of fire-dominated preindustrial landscapes. Current even-aged management, however, tends to reduce forest variability by, for example, truncating the natural age-class distribution and eliminating mature and old-growth forests from the landscape. Therefore, in the context of sustainable forest management, silvicultural techniques that retain a spectrum of forest compositions and structures at different scales are necessary to maintain this variability and thereby allow a substitution of fire by harvesting.

scholarly journals Managing Forest Conflicts: Perspectives of Indonesia’s Forest Management Unit Directors

2017 ◽  
Vol 1 (1) ◽  
pp. 8 ◽  
Author(s):  
Larry A. Fisher ◽  
Yeon-Su Kim ◽  
Sitti Latifah ◽  
Madani Mukarom
Keyword(s):  
Forest Management ◽  
Sustainable Forest Management ◽  
Local Level ◽  
Critical Issue ◽  
Provincial Government ◽  
Structural Element ◽  
Stage Of Development ◽  
Management Plans ◽  
Wide Perspective ◽  
Management Conflicts

Recent expansion of the forestry and plantation sectors in Indonesia has intensified agrarian and natural resource conflicts, and created increased awareness of the social, economic and environmental impacts of these disputes. Addressing these disputes is a critical issue in advancing Indonesia’s commitment to sustainable forest management.  The Forest Management Units (Kesatuan Pengelolaan Hutan, or KPH), have become the pivotal structural element for managing all state forests at the local level, with responsibility for conventional forest management and policy implementation (establishing management boundaries, conducting forest inventory, and developing forest management plans), as well as the legal mandate to communicate and work with indigenous people and local communities.  This paper presents the results of a national survey of all currently functioning KPH units, the first of its kind ever conducted with KPH leadership, to obtain a system-wide perspective of the KPHs’ role, mandate, and capacity for serving as effective intermediaries in managing forest conflicts in Indonesia. The survey results show that the KPHs are still in a very initial stage of development, and are struggling with a complex and rapidly evolving policy and institutional framework. The most common conflicts noted by respondents included forest encroachment, tenure disputes, boundary conflicts, and illegal logging and land clearing.  KPH leadership views conflict resolution as among their primary duties and functions, and underscored the importance of more proactive and collaborative approaches for addressing conflict, many seeing themselves as capable facilitators and mediators. Overall, these results juxtapose a generally constructive view by KPH leadership over their role and responsibility in addressing forest management conflicts, with an extremely challenging social, institutional, and political setting. The KPHs can certainly play an important role as local intermediaries, and in some cases, as facilitative mediators in resolving local conflicts, but only with a more concerted effort from central and provincial government authorities to provide greater consistency in policies and regulations, improved policy communication, and a sustained commitment to strengthening the capacity of individual KPHs. 

scholarly journals RISK FACTORS OF PUBLIC ADMINISTRATION AND THEIR ASSESSMENT IN FORESTRY IN RUSSIA

2021 ◽  
Vol 9 (2) ◽  
pp. 76-91
Author(s):  
Svetlana Morkovina ◽  
Oksana Netrebskaya
Keyword(s):  
Risk Factors ◽  
Forest Management ◽  
Sustainable Forest Management ◽  
Forest Policy ◽  
Risk Groups ◽  
The State ◽  
Development Programs ◽  
Security Risks ◽  
Meso Level ◽  
Micro Level

The article deals with the complex groups of risks of state forest management: strategic; managerial; operational (natural and climatic), legal (legal), property (related to property, forest resources and land), financial, commercial, technological; informational; security risks; design (software); reputational. Macro-level risk factors determine the state forest policy, transformed into strategies, development programs and implemented at the level of the Ministry of Natural Resources. Risk factors at the meso-level of forest management determine the effectiveness of the interaction of the Federal Forestry Agency with participants in forestry relations in order to ensure rational, continuous and sustainable forest management, reproduction, protection and protection of forests. Micro-level factors are implemented in regional forestry systems. For the purpose of assessing their significance and probability of occurrence, an expert method was used, implemented at the meso and micro levels of state forest management. The most priority for the state forest management at the meso-level are strategic (programmatic), financial, commercial risk factors, as well as security risks, while for the micro-level, natural-climatic and personnel risk factors are also among the priorities. To create a unified state risk management system in forest management, it is necessary to develop a unified approach that takes into account complex risk groups differentiated in the context of regional systems.

scholarly journals The pertinent role of forest inventory in making choice of silvicultural operations in community forests of Nepal

2018 ◽  
pp. 65-75 ◽  
Author(s):  
S. G. Baral ◽  
H. Vacik ◽  
B. B. K. Chhetri ◽  
K. Gauli
Keyword(s):  
Time Series ◽  
Forest Management ◽  
Forest Inventory ◽  
Sustainable Forest Management ◽  
Forest Stand ◽  
Inventory Data ◽  
Community Forests ◽  
Management Objectives ◽  
Management Plans ◽  
Stand Conditions

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

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