Annual growth rhythm of<i>Larix sibirica</i>and<i>Larix gmelinii</i>provenances in a field trial in southern Finland

Lukkarinen, Antti J.; Ruotsalainen, Seppo; Peltola, Heli; Nikkanen, Teijo

doi:10.1080/02827581.2013.786125

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…According to their growth and growth rhythm of variance analysis, 77 families were divided into three groups. The first group (Cluster I) included 11 families, which were 15,76,56,49,17,5,48,18,71,12, and 62; these were classified as a fast-growing type with a single plant volume range of 4872-5763 cm 3 . It was found that all growth traits of the first group were 8.95% higher than the overall average of 77 families, in which the DBH, the single plant volume, the crown width between plants, the crown width between rows was 14.10%, 46.82%, 7.55%, and 8.61% higher than the overall average, respectively.…”

Section: Growth Traits Showed Significant Differences In Various Fami...mentioning

confidence: 99%

“…Research on the growth rhythm of multiple tree species, such as Larix gmelinii (Rupr.) Kuzen, Picea abies mast, Tapiscia sinensis Oliv., Salix matsudana Pendula, and Zenia insignis Chun, has been developed, including at the seedling and young forest stages [17][18][19][20][21][22]. Ground diameter growth and seedling height conform to the S-shaped growth curve and seedling height and ground diameter are divided into different growth stages [23,24].…”

Section: Introductionmentioning

confidence: 99%

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Growth Rhythm Analysis of Young Stand and Selection of Superior Families in Choerospondias axillaris

Guang-you

et al. 2022

Forests

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As an important source of medicine, food, and high-quality wood, Choerospondias axillaris has been widely planted in South China. However, few studies of its growth traits and rhythm and concerning the selection of superior provenances/families were developed. In this study, 77 families from five provenances were studied and grouped. Tree height, diameter at breast height (DBH), and crown width within and between rows were measured. The relevance between growth traits and environmental factors was also analyzed. The results showed the height, DBH, and crown width within and between rows were divided into slow, mean, and fast growth periods, which was significantly related with sunshine hours in earlier months. Next, monthly rainfall showed an extremely positive correlation with the increase in tree height, DBH, and plant volume. Then, the monthly volume increment had a significantly positive correlation with five meteorological factors, excluding sunshine hours with increasing months, while the monthly growth of tree height and crown width within and between rows was significantly negatively correlated with sunshine hours. Based on these results, the superior families No. 15, 76, and 56, which originated from the Raoping provenance, were selected for their fast growth and available adaptation. These results provided the reliable growth rhythm of a young C. axillaris stand, which established a basis for fertilizing and forest tending. During these processes, meteorological factors, especially humidity and sunshine duration, had important effects on growth, implying that the external climate should be paid more attention to promote fast growth and prevent diseases and insect pests. Moreover, selecting superior families was helpful to further breeding and plantation.

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Section: Growth Traits Showed Significant Differences In Various Fami...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth Rhythm Analysis of Young Stand and Selection of Superior Families in Choerospondias axillaris

Guang-you

et al. 2022

Forests

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“…Dahurian larch, a highly adaptable tree species to harsh climatic and soil conditions, plays a crucial role in climate change in the Far East region of the Eurasian continent [42,43]. Currently, Dahurian larch has been introduced in several countries such as Sweden and Finland [44]. Moreover, Dahurian larch plantation forests are the most common and typical research objects in Northeastern China [45].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Potential Prediction and Calibration Methods of Crown Width for Dahurian Larch (Larix gmelinii Rupr.) in Northeastern China

Liu,

Wang,

Jiang

2023

Forests

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Crown width (CW) is an important indicator for assessing tree health, vitality, and stability, as well as being used to predict forestry models and evaluate forest dynamics. However, acquiring CW data is laborious and time-consuming, making it crucial to establish a convenient and accurate CW prediction model for forest management. In this study, we developed three models capable of conducting calibration: generalized models (GM), quantile regression models (QR), and mixed-effects models (MIXED). The aim was to effectively improve the prediction accuracy of CW using data from Dahurian larch (Larix gmelinii Rupr.) in Northeastern China. Different sampling designs were applied, including selecting the thickest, thinnest, intermediate, and random trees, with 1 to 10 sample trees for each design. The results showed that all models achieved accurate CW predictions. MIXED displayed the most superior fitting statistics than GM and QR. In model validation, with the increase in the number of sample trees, the model prediction accuracy gradually improved and the model differences gradually reduced. MIXED produced the smallest RMSE, MAE, and MAPE across all sampling designs. The intermediate tree sampling design with the best validation statistics for the given sample size was selected as the final sampling design. Under intermediate tree sampling design, MIXED required a minimum of five sample trees, while GM and QR required at least five and six sample trees for calibration, respectively. Generally, we suggested selecting MIXED as the final CW prediction model and using the intermediate tree sampling design of five trees per plot. This study could provide ideas and support for forest managers to accurately and efficiently predict CW.

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“…Several studies have shown that air temperatures during both winter and early spring months influence the development of larch needles (Hänni-nen, 1995;Chuine & Cour, 1999;Chmielewski & Rötzer, 2001;Rötzer et al, 2004;Migliavacca et al, 2008). Studies on annual growth of larch trees have been conducted in Europe, including studies in Italy and Finland that described the development of larch needles (Rossi et al, 2009) as well as the role of cumulative temperature and latitude on shoot growth in Larix sibirica and Larix gmelinii (Lukkarinen et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Variation of bud flushing in Larix decidua clones

Sierota¹,

Ukalska²,

Zagożdżon³

et al. 2017

Dendrobiology

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Abstract:In situ assessments of bud flushing in European larch Larix decidua Mill. clones growing under natural conditions were conducted in the Łęgajny seed orchard, Warmia-Masuria Province, Poland. The 27 assessed clones (among a total of 332 trees) were derived from superior plus trees from six selected stands in north eastern Poland. The analyses were carried out on 15-year-old clones grown in two seed orchard sectors differing in soil moisture conditions (no. 3, a nearly flat surface with southern exposure and no. 5, a flat surface, slightly inclined toward the north and periodically flooded by nearby bog-springs). Apical and axillary bud flushing was assessed in March/April 2014, using a 6-stage scale. Significant differences in bud burst were observed among clones, bud types (apical or axillary), clone provenances and growing conditions in seed orchard sectors. Generally, axillary buds flushed earlier than apical buds. Clones growing in section no. 3 showed earlier bud flushing than in section no. 5. Daily mean temperature during the initial bud burst period (stages 0-3) had no significant effect on bud flushing in a number of clones, however the cumulative temperature in that period was strong correlated with bud flushing for particular clones and provenances which suggests susceptibility to spring frost. Local site conditions (i.e. different soil moisture contents and insolation levels between sectors) as well as decreased temperatures in the first period of bud development had strong effects on bud flushing in European larch clones.

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Annual growth rhythm ofLarix sibiricaandLarix gmeliniiprovenances in a field trial in southern Finland

Cited by 5 publications

References 19 publications

Growth Rhythm Analysis of Young Stand and Selection of Superior Families in Choerospondias axillaris

Growth Rhythm Analysis of Young Stand and Selection of Superior Families in Choerospondias axillaris

Assessment of Potential Prediction and Calibration Methods of Crown Width for Dahurian Larch (Larix gmelinii Rupr.) in Northeastern China

Variation of bud flushing in Larix decidua clones

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