Comparison of Wood Resource Assessment in National Forest Inventories

Redmond, John; Gschwantner, Thomas; Riedel, Thomas; Alberdi, Iciar; Vidal, Claude; Bošeľa, Michal; Fischer, Christoph; Hernández, Laura; Kučera, Miloš; Kuliešis, Andrius; Tomter, Stein Michael; Vestman, Martin; Lanz, Adrian

doi:10.1007/978-3-319-44015-6_2

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…The Forest Act (1991) is an official state document that requires the development of a forest management plan (FMP) every 10 years for each forest holding in Poland. Similar binding documents are in effect in other countries (Redmond et al 2016). For instance, the creation of an FMP, or at least local forest inventory data, is mandatory in the following European countries: Bosnia and Herzegovina, Bulgaria, Croatia, the Czech Republic, Estonia, France, Hungary, Latvia, Macedonia, Poland, Portugal, Romania, Slovakia, Slovenia and Switzerland (Nichiforel et al 2018).…”

Section: Forest Inventorymentioning

confidence: 99%

“…Many forest inventories use a designbased approach, where survey crews are contracted to collect data by means of field measurements on sample plots, entailing the use of increasingly expensive human resources (Eurostat 2018). This approach is widely applied across many European countries (FAO 2004;McInerney et al 2011;FMM 2012;Redmond et al 2016;Vidal et al 2016). Although the design-based approach may be sufficient to describe attributes of an entire population, e.g., the forest district, it may not be precise enough to sufficiently describe attributes of elements or small areas, for instance, single trees or stands, especially in areas with a low sample coverage (McRoberts et al 2013).…”

Section: Growing Stock Volumementioning

confidence: 99%

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Influence of sampling intensity on performance of two-phase forest inventory using airborne laser scanning

et al. 2020

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Background Forest inventories have always been a primary information source concerning the forest ecosystem state. Various applied survey approaches arise from the numerous important factors during sampling scheme planning. Paramount aspects include the survey goal and scale, target population inherent variation and patterns, and available resources. The last factor commonly inhibits the goal, and compromises have to be made. Airborne laser scanning (ALS) has been intensively tested as a cost-effective option for forest inventories. Despite existing foundations, research has provided disparate results. Environmental conditions are one of the factors greatly influencing inventory performance. Therefore, a need for site-related sampling optimization is well founded. Moreover, as stands are the basic operational unit of managed forest holdings, few related studies have presented stand-level results. As such, herein, we tested the sampling intensity influence on the performance of the ALS-enhanced stand-level inventory. Results Distributions of possible errors were plotted by comparing ALS model estimates, with reference values derived from field surveys of 3300 sample plots and more than 300 control stands located in 5 forest districts. No improvement in results was observed due to the scanning density. The variance in obtained errors stabilized in the interval of 200–300 sample plots, maintaining the bias within +/− 5% and the precision above 80%. The sample plot area affected scores mostly when transitioning from 100 to 200 m2. Only a slight gain was observed when bigger plots were used. Conclusions ALS-enhanced inventories effectively address the demand for comprehensive and detailed information on the structure of single stands over vast areas. Knowledge of the relation between the sampling intensity and accuracy of ALS estimates allows the determination of certain sampling intensity thresholds. This should be useful when matching the required sample size and accuracy with available resources. Site optimization may be necessary, as certain errors may occur due to the sampling scheme, estimator type or forest site, making these factors worth further consideration.

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Section: Forest Inventorymentioning

confidence: 99%

Section: Growing Stock Volumementioning

confidence: 99%

Influence of sampling intensity on performance of two-phase forest inventory using airborne laser scanning

et al. 2020

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“…Efforts to quantify forest area and extent from the local to the global scale have frequently used the Food and Agriculture Organisation of the United Nations (FAO) definition of forest (FAO, 2000;Redmond et al, 2016;Stibig et al, 2004). Despite its criticisms (Colson et al, 2009;Fairhead & Leach, 1998;MacDicken, 2015;Sloan & Sayer, 2015) the definition has remained consistent and therefore temporally reliable since 2000 (MacDicken, 2015).…”

Section: Forest Definitions For Classificationmentioning

confidence: 99%

An examination of forest cover change at Angkor, Cambodia, using satellite imagery, interviews and interpretation of historical events

Wales

2020

Applied Geography

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In the three decades since the mid-1970s through to the early 2000s forest cover at the Angkor World Heritage Site, Cambodia has not progressed linearly but in response to different historical events. This research uses multiple methods in comparing satellite image classification with key informant interviews and other forms of data at the landscape scale and at case studies to provide an historical perspective on forest cover change. The earliest date corresponds to the beginning of the civil war in Cambodia through to a time when a number of events had contributed to significant change in forest pattern and extent at Angkor. The change observed is a result of regulatory controls on land use, ongoing subsistence resource use activities and other events and processes, and more broadly reflects a country in transition and a history of conflict relating to resource governance. The research demonstrates that multiple methods combining medium resolution satellite imagery with interview data and processes detectable at specific time periods can be used to understand patterns of forest change and establish links to processes on the ground.

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“…Despite these studies, it should be mentioned that it is difficult to establish clear threshold values for slope, distance to roads and property size in terms of their effects on wood availability and feasibility, since this can vary regionally [10,11]. For example, Ireland establishes a slope threshold of 30 degrees for the whole country [22]. However, Spain defines different slope thresholds within the country, the limit being 45%-50% in all of Spain except for in the Atlantic region, where it is 75%-80% [23].…”

Section: Introductionmentioning

confidence: 99%

Mapping Feasibility for Wood Supply: A High-Resolution Geospatial Approach to Enhance Sustainable Forest Management in Galicia (NW Spain)

Rodríguez-Dorna,

Alonso,

Picos

et al. 2023

Forests

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The forest value chain is key to the European transition to a climate-neutral economy. Sustainable forest management is essential for this task. To plan sustainable forest management, it is essential to track forest resources in relation to their feasibility for wood supply. This means considering the constraints that may limit the incorporation of these resources into the forest value chain. Maps adapted to specific regional constraints and to the characteristics of specific forests are essential for performing sustainable forest management at a local scale. This study presents a methodology for the integrated analysis of geospatial data focused on classifying the land and the forest resources of a region according to their feasibility for wood supply. It produces maps of the feasibility for wood supply in an area and of the existing forest resources at a 10 m spatial resolution. This was done by integrating information about the legal and technical constraints present in the area according to decision rules. The land was classified into three classes: favorable, intermediate or unfavorable. Additionally, updated forest-oriented land cover maps were produced to analyze the feasibility for wood supply of the forest resources present in the region. It was found that 42% of the Eucalyptus spp., 48% of the conifers and 30% of the broadleaves in the study area were located in favorable areas. These maps would help in the quest for more sustainable forest management in the region and aid in boosting the competitiveness of the regional forest value chain.

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Comparison of Wood Resource Assessment in National Forest Inventories

Cited by 4 publications

References 12 publications

Influence of sampling intensity on performance of two-phase forest inventory using airborne laser scanning

Influence of sampling intensity on performance of two-phase forest inventory using airborne laser scanning

An examination of forest cover change at Angkor, Cambodia, using satellite imagery, interviews and interpretation of historical events

Mapping Feasibility for Wood Supply: A High-Resolution Geospatial Approach to Enhance Sustainable Forest Management in Galicia (NW Spain)

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