Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway

Aza, Ana; Kallio, Maarit; Pukkala, Timo; Hietala, Ari M.; Gobakken, Terje; Astrup, Rasmus

doi:10.14214/sf.10732

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…For a machine to correctly plant seedlings, they need reliable information about the site, which digital data sources could provide (Skogforsk, 2022). Other variables not brought up in Paper I should also be further investigated, for example using harvester data for tree species selection (Saksa et al, 2021;Aza et al, 2022). Applying high resolution data to species distribution models could also provide possible support in tree species selection (Gastón et al, 2014).…”

Section: Digital Tools and Forest Regenerationmentioning

confidence: 99%

Regeneration measures in time and space: Site preparation, planting and digital tools

Nordin¹

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Regeneration success depends on decisions made based on factors on aregional, site, and microenvironmental level. Therefore, understanding andmapping of such factors between and within sites can guide decisions forbetter seedling establishment. Thus, the aim of this thesis was to findcombinations of regeneration measures that result in low seedling mortalityand high growth. Additionally, to explore the potential of digital tools inregeneration planning. Aims were handled using field experiments and asurvey, by integrating digital tools in the analysis and experimental set-up. Increased precipitation and decreased air temperatures between April andOctober during the planting year lowered seedling mortality. Planting inmineral soil also lowered the mortality rate, which emphasized theimportance of planting and site preparation quality (Paper I). Selection ofsite preparation method was found to be of minor importance. The sitepreparation’s ability to create suitable planting spots was most important forseedling survival and growth. Selection of site preparation affected soildisturbance, and natural regeneration was promoted with all methods usedin the experiments (Paper II). Adapting planting position choice, followingsite preparation, to within-site variation was valuable to decrease mortalityrates and promote growth (Paper II-III). In wet conditions, elevatedplanting positions were advantageous compared to lower ones, but moreflexibility could be applied in drier conditions. Norway spruce, Scots pine,and silver birch reacted differently to planting position choice (Paper III).Paper I-III indicated that digital tools could be used in regenerationplanning. A depth-to-water-raster successfully explained seedling mortalityand growth in the extreme ends of the soil moisture spectrum. Using remotesensing derived variables can be valuable for further mapping andunderstanding of between and within-site variation in future regenerationplanning. There were no long-term negative effects on stand productivityafter 30 years following site preparation. The standing volume was largestafter ploughing but disc trenching and mounding also had higher standingvolume than the unscarified control (Paper IV). I conclude that regenerationdecisions made today, regarding species selection and regeneration method,should strive for increased precision for the benefit of the forests oftomorrow.

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Section: Digital Tools and Forest Regenerationmentioning

confidence: 99%

Regeneration measures in time and space: Site preparation, planting and digital tools

Nordin¹

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Optimal species composition for stand establishment in root-rot infected forest areas

Ahtikoski,

Honkaniemi,

Holmström

et al. 2024

New Forests

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Heterobasidion root rot causes severe problems in the coniferous dominated forests of Northern hemisphere by decreasing timber value, reducing tree growth and making trees prone to other disturbance agents such as wind and bark beetles. According to current practices an infected stand is protected by treating fresh stumps at final cutting and generating the stand with tree species other than the host to reduce the current infection levels. However, prevailing guidelines do not provide instructions how to manage the neighbouring stands around the already infected stand. In contrast to earlier studies, we expand the analysis to an entity (a landscape) consisting of both infected and uninfected stands so that stand establishment of uninfected area is taken into account, too. The objective of the study is to optimize stand establishment of the uninfected area so that the revenue losses are simultaneously minimized when the average carbon storage is maximized within the whole landscape (infected + uninfected). Our results demonstrate the complexity of Heterobasidion root rot management: the optimum stand establishment strategy differs depending on the geographic location and interest rate (i.e., yield on capital). Further, the results implicate that for successful fight against Heterobasidion root rot the magnitude of infected area as well as the severity of the infection need to be taken into account.

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PixSim: Enhancing high-resolution large-scale forest simulations

Cattaneo,

Astrup,

Antón-Fernández

2024

Software Impacts

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Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway

Cited by 5 publications

References 18 publications

Regeneration measures in time and space: Site preparation, planting and digital tools

Regeneration measures in time and space: Site preparation, planting and digital tools

Optimal species composition for stand establishment in root-rot infected forest areas

PixSim: Enhancing high-resolution large-scale forest simulations

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