FTIR spectroscopy of early and latewood of<i>Larix gmelinii</i>growing along the polar treeline: the correlation between absorption bands and climatic factors

Tyutkova, E. A.; Loskutov, S. R.; Shestakov, N. P.

doi:10.1080/17480272.2018.1562495

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Table 3 summarizes the main chemical and functional groups found in the wood of H. brasiliensis clones according to Tyutkova et al (2019), being identified by the number of waves of the carboxylic groups: = C-H (902 cm -1 ), C-O-O (1114 cm -1 ), -C-H (1464 cm -1 ), C = O (1743 cm -1 ), C-H (2924 cm -1 ) and O-H (3370 cm -1 ).…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Wood quality of ten clonal progenies of rubber tree as raw material for bioenergy

Amorim¹,

Longui²,

Freitas³

et al. 2023

Maderas, Cienc. tecnol.

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The use of wood as a bioenergetic source requires knowledge of its technical properties. The rubber tree Hevea brasiliensis has an economic life cycle of 25 to 30 years in Brazil. It is used for extracting rubber and generating residual wood for fuel. Our goal was to characterize the wood quality of 10 clonal progenies as a source of raw material for bioenergy. Ten clonal progenies of 12-year-old Hevea brasiliensis from an experimental planting in Selvíria municipality were evaluated. Three trees per clone were evaluated for individual properties of Higher Heating Value, immediate chemical analysis, chemical composition, fiber di-

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Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Wood quality of ten clonal progenies of rubber tree as raw material for bioenergy

Amorim¹,

Longui²,

Freitas³

et al. 2023

Maderas, Cienc. tecnol.

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“…Therefore, microspectroscopy appears to be a good alternative in studies where the aim is to clarify the effects of temperature and precipitation on xylem cell wall composition, as these techniques offer the spatial resolution required [24]. This approach seems not to have been attempted until recently [25]. Chemical imaging studies of conifer tracheid secondary cell wall have shown significantly higher relative lignin content in earlywood than latewood [26,27], emphasizing the need to study these two wood types separately in order to minimize the noise when attempting to link cell wall chemistry to climate signal.…”

Section: Introductionmentioning

confidence: 99%

Annual Variations in Norway Spruce Xylem Studied Using Infrared Micro-spectroscopy

Huang

Pedersen

Fredriksson

et al. 2019

Forests

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In temperate environments, ring width, cell size and cell wall thickness within the xylem of trees are known to be affected by climate conditions. Less is known about the effect of climate conditions on the chemical characteristics of the xylem, which are important for the susceptibility of the tissue towards fungal infections as well as for the degradability of the material within the forest ecosystem. We explored the use of infrared microspectroscopy to investigate the possible effects of temperature and drought on the relative amount of cell wall biopolymers, i.e. the ratios between cellulose, hemicellulose and lignin in the earlywood xylem cell walls of Norway spruce (Picea abies (L.) Karst.) in temperate forests. Drought and warm temperatures were significantly correlated to the hemicellulose to lignin ratio of the earlywood formed the following year, perhaps due to a reduced amount of stored resources being available for xylem formation.

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Mapping Forest Stock Volume Using Phenological Features Derived from Time-Serial Sentinel-2 Imagery in Planted Larch

Li,

Lin,

Long

et al. 2024

Forests

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As one of the important types of forest resources, mapping forest stock volume (FSV) in larch (Larix decidua) forests holds significant importance for forest resource management, carbon cycle research, and climate change monitoring. However, the accuracy of FSV mapping using common spectral and texture features is often limited due to their failure in fully capturing seasonal changes and growth cycle characteristics of vegetation. Phenological features can effectively provide essential information regarding the growth status of forests. In this study, multi-temporal Sentinel-2 satellite imagery were initially acquired in the Wangyedian Forest Farm in Chifeng City, Inner Mongolia. Subsequently, various phenological features were extracted from time series variables constructed by Gaussian Process Regression (GPR) using Savitzky–Golay filters, stepwise differentiation, and Fourier transform techniques. The alternative features were further refined through Pearson’s correlation coefficient analysis and the forward selection algorithm, resulting in six groups of optimal subsets. Finally, four models including the Random Forest (RF), K-Nearest Neighbors (KNN), Support Vector Machine (SVM), and Multiple Linear Regression (MLR) algorithms were developed to estimate FSV. The results demonstrated that incorporating phenological features significantly enhanced model performance, with the SVM model exhibiting the best performance—achieving an R2 value of 0.77 along with an RMSE value of 46.36 m3/hm2 and rRMSE value of 22.78%. Compared to models without phenological features, inclusion of these features led to a 0.25 increase in R2 value while reducing RMSE by 10.40 m3/hm2 and rRMSE by 5%. Overall, integration of phenological feature variables not only improves the accuracy of larch forest FSV mapping but also has potential implications for delaying saturation phenomena.

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FTIR spectroscopy of early and latewood ofLarix gmeliniigrowing along the polar treeline: the correlation between absorption bands and climatic factors

Cited by 3 publications

References 19 publications

Wood quality of ten clonal progenies of rubber tree as raw material for bioenergy

Wood quality of ten clonal progenies of rubber tree as raw material for bioenergy

Annual Variations in Norway Spruce Xylem Studied Using Infrared Micro-spectroscopy

Mapping Forest Stock Volume Using Phenological Features Derived from Time-Serial Sentinel-2 Imagery in Planted Larch

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