Small-scale Forestry Research Articles

Factors That Shaped the Forestry Extension System in Japan: Adoption and Adaptation of the United States Model After World War II

Systems for small-scale forestry are occasionally shaped by adopting models used by other countries. Such adoption is localized and adapted to suit needs and conditions of the country and reflects its specific characteristics instead of being simply copied. In this study, we examine the process of the adoption and adaptation of the forestry extension system in Japan and discuss the meaning of policy transfer across countries and the factors influencing policy development. Although the adoption of the forestry extension system was de facto a direct coercion enforced by the occupying United States (US) government in the early post-war era, in-depth analysis revealed it was a joint effort between Japanese and US foresters. The enthusiasm of foresters in charge of forestry extension enabled them to improve it into an idealized form. This first adaptation phase can be regarded as a very progressive step in view of trends indicated by a previous study. The adoption of the US model inspired and legitimized the new system. Results imply that policy development occurs at the level of the ruler, who sets the direction of the forestry extension, and the level of the practitioner, who is in charge of the extension activities in the field. Moreover, it demonstrates the importance of examining the significance and effectiveness of policy transfers and the adaptation of adopted institutions at each level. However, motivation and perception of practitioners toward their work and allowance for voluntary initiatives given to them is the key to this notion.

Recent Applications of Smart Technologies for Monitoring the Sustainability of Forest Operations

Precision forestry is a useful technique to help forest stakeholders with proper sustainable forest management. Modern sensors and technologies, with special reference to the sustainability of forest operations, can be applied on a variety of levels, including the monitoring of forest activities regarding the three pillars (economy, environment, and society). In this review, we summarised the current level of knowledge regarding the use of precision forestry techniques for monitoring forest operations. We concentrated on recent data from the last five years (2019–2023). We demonstrated how an Industry 4.0 strategy for remote and proximal monitoring of working performance can be effective when using CAN-bus and StanForD data collected by modern forest machines. The same information can be effectively used to create maps of soil trafficability and to evaluate the patterns of skid tracks or strip roads built as a result of forest intervention. Similar information can be gathered in the case of small-scale forestry by using GNSS-RF (Global Navigation Satellite Systems—Radio Frequency) or even monitoring systems based on smartwatches or smartphones. LiDAR and Structure for Motion (SfM) photogrammetry are both useful tools for tracking soil rutting and disturbances caused by the passage of forest machinery. SfM offers denser point clouds and a more approachable method, whereas laser scanning can be considerably faster but needs a more experienced operator and better data-processing skills. Finally, in terms of the social component of sustainability, the use of location sharing technologies is strongly advised, based for instance on GNSS—RF to monitor the security of forest workers as they operate.

One Size Does not Fit all: Constraints and Opportunities for Small-Scale Forestry in British Columbia, Canada

One Size Does not Fit all: Constraints and Opportunities for Small-Scale Forestry in British Columbia, Canada

Devolution of tenure rights in forestland in China: Impact on investment and forest growth

I investigate whether devolution of forestland tenure rights to households in China triggered forest investment and the impact on forest conditions. I use a panel dataset of a two-round survey of over 10,000 forestland plots held by 1500 households in eight provinces before and after the devolution. Using a quasi-experimental regression approach, I find that forestland devolved to households has higher per-area-unit, yearly labor input and capital investment. I also find larger forest cover in regions devolving more. The findings support that clearly-defined and well-protected household property rights offer an effective alternative to common-pool resources management in small-scale forestry.

Air-Borne Particle Size Distribution of Wood Dust Emitted during Small Scale Forestry Operations

Practices such as tree felling, pruning, logging and chipping wood can produce significant amount of wood particles that can be inhaled by agricultural and forestry workers, triggering an important risk to the health of workers. Especially finest fractions of dust, less than 4 µm in diameter (the respirable fraction) may cause respiratory and dermal diseases, until to the risk of developing nose and sinus adenocancer. The aim of this work was to assess the particle size distribution of wood dust produced during chainsaw operations. In two separate trials (July and December), wood logs of three different species (Eucalyptus sp., Pinus radiata and Quercus cerris) were employed in cutting tests. Two chainsaws, one electric powered by batteries and one endothermic, were employed. To characterize the particle size distribution, samplings were carried out with a dust particle counter placed in the area surrounding the tests’ site. Results showed that the dust was characterized by a major fraction of fine particles around 0.3 µm (72% of the particles from 0.3 to 10 µm). The chainsaw with endothermic engine produced more fine dust of the electric one. Obtained amounts of inhalable wood dust were very variable in values, however attention should be paid to the exposure to wood dust considering potential risks, especially in case of long times of exposure.

Work productivity assessment of small forwarders in forest operations: An international review

There are two types of forwarders available in the practice including conventional forestry forwarders and farm tractors equipped with a trailer/grapple loader that operate as a forwarder. Forwarders loading capacity can vary depending on the machine size. This paper aimed to review the work productivity of small size forwarders (payload< 10 tonnes and engine power< 120 HP) to create an overview of their performance for small scale operations within the small-scale forestry/ plantations management or agroforestry systems. According to the review, small forwarders were mainly used for harvesting small trees over gentle slopes. Main machine types include light tractor-trailer and purpose-built forwarders. The reported productivity by international scholars ranged from 3.4 to 19.2 m3/PMH0. Main variables impacting the productivity of small forwarders included forwarding distance, load volume, piece volume, number of logs per turn, season, operator skills and harvesting intensity. This report has summarised recommendations from literatures on proper application of small forwarders to improve harvesting efficiency which can be of use to the forest industrial and academic users for practical and research purposes.

Lessons from project-scale reducing emissions from deforestation and forest degradation: A case study in northern Lao People’s Democratic Republic

The reducing emissions from deforestation and forest degradation (REDD+) framework has been implemented over the past decade, and has led to a restructuring of forest governance systems in host countries. In the case of Lao People’s Democratic Republic, which is promoting REDD+, activities have been implemented at project, sub-national, and national scales. Project-scale REDD+ is assumed to be compatible with small-scale forestry, and usually targets local people to enhance participatory forest management through technology transfer. Such projects were also supported by foreign governments under bilateral cooperation or by private funding. In the case of sub-national- or national-scale REDD+, the Lao People’s Democratic Republic government aims to develop a system of forest monitoring, as well as related structures required by international REDD+ entities. These activities are supported by substantial funding from multilateral organizations. Lessons learned from project-scale REDD+ in northern Lao People’s Democratic Republic showed a gap in expectations among different donors and recipients regarding how to implement REDD+, in particular how to reduce dependency on forest resources in rural areas, and how to estimate and account for greenhouse gas emissions reductions with consistent methodologies at different scales. Such differences are related to the attitudes of local people toward participation, and those of the private entities that fund projects and ground-based activities. In future REDD+ schemes, the structural network or structural social capital among project-, sub- national-, and national-scale activities should be reconsidered to enhance the continued participation of stakeholders and make use of their accumulated experience and knowledge of small-scale forestry management.

The Influence of Harvesting Systems on Productivity, Costs, and Soil Compaction in Small-Scale Forestry

The Influence of Harvesting Systems on Productivity, Costs, and Soil Compaction in Small-Scale Forestry

Assessment of Working Performance and Costs of Two Small-Scale Harvesting Systems for Medium Rotation Poplar Plantations

Considering the increasing need to produce energy from renewable sources, the interest towards Medium Rotation Coppices (MRC) plantations has increased. One of the main issues that require tackling for the comprehensive sustainability of these plantations is related to the development of sustainable harvesting systems. Indeed, as a consequence of the average tree diameters at a breast height (dbh) of about 15 cm, single-pass harvesting typical of short rotation coppice is not applicable. Therefore, these plantations are generally harvested with machinery specifically developed for forest operations, as for instance harvesters, feller-bunchers and forwarders. In the Mediterranean area, the availability of such machines is still limited to a few big forest enterprises. Indeed, the majority of forest contractors carry out their activities in the framework of small-scale forestry, without the financial possibility of purchasing expensive machineries. Thus, the present study had the objective to evaluate the performance of two small-scale harvesting systems in a 7-year-old poplar plantation in Central Italy. The difference between the two systems was the different machinery applied for wood extraction, i.e., a forestry-fitted farm tractor equipped with winch (WINCH) and a fork lift prototype, attached to a crawler tractor (CFL). Extraction via CFL system reached very high working performance with about 21.5 m3 SMH−1 (Scheduled Machine Hours, including delays), comparable to the productivities reported in the literature for forwarders working in similar plantations. Harvesting costs with CFL were 24.74 EUR m−3, of which 4.48 EUR m−3 was for felling with chainsaw, 4.61 EUR m−3 for extraction with CFL prototype and 15.64 EUR m−3 for wood chipping. WINCH showed unsatisfactory results instead, possessing a wood chip production cost of 41.95 EUR m−3, which is practically equivalent to the market price of wood chips.

Effects of tree species diversity and stand structure on carbon stocks of homestead forests in Maheshkhali Island, Southern Bangladesh

BackgroundThe homestead forests of Bangladesh occupy 0.27 million hectares (10% of the total forested area) and have potential to store carbon (C) and conserve biodiversity. Small scale forestry practices, however, are lacking reliable estimation of C stocks and tree species diversity. This may hinder successful implementation of REDD + and similar mechanisms as they concentrate on large-scale forests. This study aimed to estimate the above- and below-ground carbon stocks in homestead forests of Maheshkhali Island in Bangladesh and how tree species diversity and stand structural variation affect these C stocks. We randomly surveyed a total of 239 homestead forests in the hillside, beachside, and inland in 2019.ResultsTree biomass C stocks were 48–67% greater in the inland and hillside forests than in the beachside due to significantly greater stand density, basal area, tree diameter. In total we found 52 tree species, but most abundant species in the inland and hillside forests, Mangifera indica, Samanea saman, and Artocarpus heterophyllus stored the most C in tree biomass. Greater tree species richness and diversity index in the inland and hillside forests indicated greater above- and below-ground tree biomass C stocks. An increase in tree species richness and diversity index by one unit was found to increase the tree biomass C stock by 22 and 30 Mg C ha−1, respectively. The total soil C stock was also affected by tree species diversity, stand density, and their interaction with soil properties. Total soil C stocks were greatest (51 Mg ha−1) in the inland forests, having also the greatest stand density and tree species richness. C stock in soil surface was greatest in the hillside forests due to the greatest litterfall, but the average share of litterfall from the total biomass C was only 0.1%.ConclusionsHomestead forest ecosystems could store 96 Mg C ha−1 in total, which can contribute to climate change mitigation by generating C credits for small-scale homestead forests owners. Above- and below-ground tree biomass C stocks were found to correlate with tree species diversity, which may also contribute to biodiversity conservation in the REDD + in Bangladesh and countries alike.

What drives reindeer management in Finland towards social and ecological tipping points?

Reindeer management (RM) in northern Fennoscandia is an example of social-ecological systems (SESs) providing social, cultural, ecological, and economic values. Changing climate and pasture conditions and societal changes continue to transform the operational environment of RM. These key drivers, and resulting transformations including alternative SES states, have not been studied in detail before. Our comprehensive literature review and interviews with herders reveal that land use, climate change, and governance drive the emergence of SES tipping points. The basis of successful RM depends on the quantity and quality of pastures to secure animal fitness. However, intensive forestry, extreme weather, and predators constrain the availability of forage and suitable calving grounds. Maintaining RM by means of predation compensation mechanisms and regular supplementary winter feeding to adapt to changes brought about by land use and warming climate comprises an alternative system state. However, if negative impacts increase remarkably or rapidly and compensatory mechanisms become insufficient, long-term impacts on system identity, and even local collapses, are expected. Although some environmental and societal changes are perceived as pressures by herders, they can be beneficial for other livelihoods in the region. Therefore, our study raises questions for future studies on social justice, such as who has the right to decide what constitutes a desirable system state, or what collaborative efforts to maintain RM in Fennoscandia would entail. Our work is applicable also in other Arctic/sub-Arctic regions where nature-based livelihoods, such as small-scale forestry and agriculture, hunting, traditional fishing, and gathering are practiced.

Further Development of a New Concept in Small Scale Forestry: “Forest-Management-Service-Contracts” in Bavaria

The forests in Bavaria cover about one third of its land area or 2.56 Mio hectares (ha) and the major part of this forest is held by private forest owners. Around 700 000 landlords manage approximately 1.4 Mio ha. In Bavaria, about 130 Forest Owner Associations (FOAs) play a key role in managing the small scale forests. In the last years, a new concept in small scale forest management arose, “Forest-Management-Service-Contract” (FMSC). The statutory corporations needed a proper management for their forests accordingly the German forest laws and the FOA took the chance to adopt a new business concept. In Bavaria exist about 3000 forest-management-service-contracts, covering over 40.000 hectares. In a current project “Further development of the successful concept – Forest-Management-Service-Contracts – through economic analysis” will be elaborated a data base for the better understanding of the crucial to success factors of FMSC. The economic analysis of the FMSC will base on business process analysis related to the administration of FMSC, on economic operating figures deviated from a single contract analysis and performance data. This information base aims to optimize the contracting process and to reduce the risks related to unknown hazards of the single FMSC.

The Influence of Old and New Machines on Productivity and Costs of Four Yarding Methods in Small-Scale Forestry in a Maine Forest

Small forest landowners and loggers require information on the cost and productivity of available timber harvesting systems in order to make the best equipment allocation decisions, especially when the current generation of highly productive, capital-intensive harvesting machinery is well suited for clearcutting in large stands. Conversely, small-scale equipment is becoming more readily available that can help minimize the capital and operating costs associated with partial cuts and intermediate stand treatments or when operating in small-scale forests. The present study evaluated the productivity and yardings costs of four different yarding systems for old machines—a farm tractor, bulldozer, cable-skidder and forwarder—working in a group selection harvest of a mixed hardwood stand in the state of Maine, USA. A sensitivity analysis using the break-even technique and considering the same harvesting productivity and machines brands and models was used in this study to assess study differences between yarding machines costs in two different scenarios: old and new machines. Results indicate that the total machine and yarding costs for old machines were lower than for the new machines. For old machines, the yarding cost per unit delivered to the landing was lowest for the forwarder method ($2.34/m3) and highest for the cable-skidder method ($4.46/m3). In the case of new machines, the yarding cost per unit was lowest for the forwarder method ($3.95/m3) and highest for the cable-skidder method ($9.46/m3). The older machines might be a better option than new machines, particularly for small landowners who need to harvest small areas with low levels of harvesting.

Evaluation of different wood harvesting systems in typical Mediterranean small-scale forests: a Southern Italian case study

Use of small-scale harvesting equipment in forestry is increasing in many regions of the world and tractor-based systems are the most common type of small-scale forestry equipment. This equipment is smaller, less expensive and less productive than advanced forestry machines and the choice of method depends on forest site-specific conditions. In southern Italy the prevailing conditions are those characteristic of small-scale forestry: harvested areas and volume are limited and ground-based extraction is still the most common harvesting technique. Two harvesting systems conventionally adopted in Italian small-scale forestry are those using either winch or grapple fitted farm tractors for wood extraction. A continuous time study was adopted to determine productivity rates and wood extraction costs and develop skidding time prediction models for these two different wood harvesting systems as used in typical Mediterranean forests, in chestnut and silver fir thinning operations. Comparing winch and grapple extraction revealed considerable differences in productivity (2.91 and 5.92 m3 h-1 respectively). Factors significantly affecting productivity differences were extraction distance and payload per turn. The study concluded that farm tractors can be used for small scale harvesting operations and its results can be used to set piece rates, design and rationalize work and estimate costs. In order to sustain small-scale harvesting equipment effectiveness, skid trails should be planned in forests. The use of farm tractors needs to be encouraged as an alternative self-sufficient productivity method in small-scale forestry operations.

Whole tree system evaluation of thinning a pine plantation in southern Italy

In Italy, some silvicultural treatment as thinning could be carried out in an economic way adopting systems based on small-scale mechanization. This paper examines the productivity standards of wood biomass in coniferous plantation thinning in Southern Italy under the conditions of small-scale forestry. The objectives of the study were to evaluate the incidence of different silvicultural treatments on productivity and harvesting costs and create productivity models for typical harvesting system used for wood thinned from Calabrian pine. Three different sites were monitored on the Sila Massif forest, and the experimental plan included three area tests, subjected in the last thirty years to intermediate cuttings with different thinning grade: light thinning (A thesis), moderate thinning (B thesis), heavy thinning (C thesis). The authors developed a productivity model for motor-manual felling and skidding timber with wheeled farm tractors, equipped with winch using a time motion study. Whole tree extraction system in coniferous plantation applied with typical felling system traditional has guaranteed productivity standards at a reasonable cost reducing high operational cost per unit harvested. The results, therefore, underlined that it economic possible to wood biomass harvest relatively small-diameter from thinning stands favoring moderate and heavy thinning.

Population and Stand-Level Inference in Forest Inventory with Penalized Splines

AbstractPenalized splines have potential to decrease estimates of variance in forest inventories with a design-based population-level inference, and a model-based domain-level inference by decreasing the likelihood of a model misspecification. We provide examples with second-order (B2) B-splines and radial basis (RB) functions as extensions to a linear working model (WM). Bias was not prominent, yet greater with B2 and in particular with RB than with WM, and decreased with sample size. Important reductions in the variance of a population mean were achieved with both B2 and RB, but at the domain-level only with RB. The proposed regression estimator of variance generated estimates of variance being slightly smaller than the observed variance. A consistent and larger underestimation was seen with the popular difference estimator of variance.Study Implications: Forest inventories supported by light detection and range (LiDAR) data require—in the estimation phase—a model for linking LiDAR metrics to attributes of interest. Formulating a parametric model can be a challenge and unsatisfactory if the goodness of fit varies across the range of the attribute of interest. A semiparametric model provides more flexibility and lessens the chance of a model misspecification, albeit with the potential of overfitting. A penalty directed at reducing overfitting is required. A flexible semiparametric model is potentially also better suited for applications to small areas like stands than a parametric model. We demonstrate that important reductions in variance are indeed possible, but also that they depend on the form of the nonparametric part of the chosen model and the level of inference (population versus domains). With regard to practical application, reliable estimates of forest attributes at stand-level are of special interest within the scope of forest-management planning, as silvicultural treatments are always stand-oriented, at least with small-scale forestry under Central European conditions, and stand-related volume (basal area, tree density) belongs to the set of relevant parameters for management decisions regarding harvest and regeneration measures.

Transformations Towards a New Era in Small Scale Forestry: Introduction to the Small-Scale Forestry Special Issue

Transformations Towards a New Era in Small Scale Forestry: Introduction to the Small-Scale Forestry Special Issue

Sustainability of Small-Scale Forestry and Its Influencing Factors in Lithuania

Small-scale private forestry is widespread in many countries and occupies 40.3% of the total forest area in Lithuania. The pursuit of sustainability has become one of the main goals of forest policy. In order for small-scale private forestry to be based upon sustainability principles, its sustainability must first be assessed and analyzed. This study assesses the sustainability of 385 small forest holdings of Lithuania using established forest sustainability assessment methods and performs an analysis of the factors influencing the sustainability of small forest holdings using correlation analysis. The Lithuanian small-scale forest holdings were categorized in terms of their level of sustainability as being very high and high (assessed on a five-point scale as 3.5–5 points)—13.6%, middle (2.5–3.5 points)—28.8%, or low and very low (1.0–2.5 points)—57.6%, with the corresponding proportion of holdings indicated as a percentage. A total of 40 independent variables were hypothesized, and their correlation with the sustainability assessments of the holdings was verified. The correlation analysis found mostly weak but reliable (p < 0.05) relationships with 23 independent variables: very weak—12 variables, weak—7 variables, middle—2 variables, and strong—2 variables. Moderate and strong correlations were found for the following variables: the owner’s view of the forest’s economic importance (correlation coefficient: 0.862), income per hectare (0.840), the importance of forestry in the common activity of the owners (0.525), the percentage of mature stands (0.476), the diversity of activities in forest holdings (0.361), and how the wood is used (0.328).

Smallholder tree-farmers and forest certification in Southeast Asia: alternative approaches to deliver more benefits to growers

ABSTRACT The smallholder tree-farm resources of Southeast Asia are generating substantial benefits for growers and support many successful domestic wood processors. They could provide even greater benefits at all levels of the supply and value chains if they enjoyed a sympathetic policy framework; technical and specialised support and training to promote productivity gains; and greater knowledge of market trends and access requirements. This paper reviews current forest certification systems as applied to smallholder tree-farmers in Southeast Asia, with a focus on the Lao People’s Democratic Republic, Thailand and Viet Nam, and questions whether perceived benefits match operational realities. A critical issue in any form of transactional relationship between two or more people or institutions is to answer to mutual satisfaction the question, ‘Who benefits?’ This is particularly important in transactions between relatively weak and vulnerable and relatively strong and powerful individuals and groups, such as the relationships between smallholder tree-farmers in Southeast Asia and purchasers of certified wood products. We explore factors that drive certification and how they intersect with salient characteristics of smallholder tree-farms restricting the adoption of certification. We argue that new approaches are required to deliver the benefits necessary to expand smallholder participation in wood production supply chains, such as national codes of practice for small-scale forestry and agreed standards that encourage mutual recognition between verification systems. Innovative approaches should be adopted to deliver a fair, equitable and inclusive model that is relevant, practical, feasible and cost-effective for smallholder tree-farmers. As currently practised, certification has many positive aspects for some types of forests and wood producers but rarely for smallholder tree-farmers. A new approach to smallholder forest certification is required to ensure that the answer to the question, ‘Who benefits?’ is, ‘All participants in the supply and value chain, including smallholder tree-farmers’. To achieve this outcome, certification organisations and forest products businesses should remove existing barriers to smallholder participation and develop initiatives to more fairly link smallholder tree-farmers with others in the supply chain, based on enabling and mutually supportive partnerships.

The “Coming Age of Wood” and Family Forest Owners: An Implications Wheel® Exploration

The context within which family forest owners operate is constantly changing due to many internal and external factors. Many emerging social, economic, environmental, and technological changes could have profound effects on family forest owners and their land in the future. This paper explores a possible transformative technological change: A “Coming Age of Wood” in which a large number of technological innovations in wood products result in a significant increase in the use of wood-based materials throughout the global economy, substituting for a significant share of non-renewable materials. This high impact development could be transformative for forests and forestry, including small-scale forestry. We used a participatory Futures Research method called the Implications Wheel® to explore the potential direct and indirect implications of a Coming Age of Wood for family forest owners. A total of 195 possible higher-order implications were uncovered, including implications related to major themes of negative ecological effects, positive economic effects, increased conflict between different stakeholders, and negative effects on rural communities. Anticipating some of the possibilities in advance can provide early warnings of the kinds of changes that may be coming, and help enable planners, managers and policy makers to be proactive and build barriers to undesirable change and bridges to facilitate positive change.