scholarly journals INTERNAL CAUSE ANALYSIS OF DAMAGE OF WOODEN COMPONENTS IN DANXIA TEMPLE ANCIENT ARCHITECTURES: TREE SPECIES

Wood Research ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 297-308
Author(s):  
Yan Yang ◽  
He Sun ◽  
Shuang Yang ◽  
Aifeng Wang ◽  
Rui Zhao ◽  
...  
Keyword(s):  
Tree Species ◽  
Cell Walls ◽  
Chemical Compositions ◽  
Bright Field ◽  
Decay Fungi ◽  
Cause Analysis ◽  
Fluorescence Light ◽  
Quercus Spp ◽  
Populus Spp ◽  
Salix Spp

In the study, part of degraded wooden components of Danxia Temple ancient architectures in China were indentified through the bright field microscope, and chemical compositions in cell walls were observed using polarized and fluorescence lights, respectively. The results showed that samples were belonged to Quercus spp., Ulmus spp., Salix spp., and Populus spp., respectively. Cellulose composition in Quercus spp. was seriously consumed by brown decay fungi, cellulose and lignin compositions in Ulmus spp. were consumed by white decay fungi under polarized and fluorescence light observations. All of these four kind of tree species themselves were easily vulnerable to be attacked by insects.

scholarly journals Coppice Woods and Pollard Trees in the Visual Arts

2016 ◽  
Vol 9 (2) ◽  
pp. 97-108 ◽  
Author(s):  
Jan Lacina
Keyword(s):  
Visual Arts ◽  
Tree Species ◽  
Castanea Sativa ◽  
European Beech ◽  
Symbolic Meaning ◽  
European Chestnut ◽  
Sprouting Capacity ◽  
Ancient Times ◽  
Quercus Spp ◽  
Salix Spp

AbstractThe sprouting capacity of some broadleaves has been used for their regeneration since ancient times. Often concurrently with taking advantage of sprouting stools, the trees used to be shaped also by pruning their stems, namely on pasturelands and in grazing forests. The activity of woodcutters and shepherds was obviously rather common in warmer climates with broadleaved stands because coppice and pollard trees appear relatively often in the visual arts from ancient works through the period if the Italian and German Renaissance up to the romantic and realistic landscape painting of the 19thcentury overlapping into the 20thcentury. For centuries, most frequently illustrated in European and Czech paintings have been pollard willows (Salix spp.). Other coppice and pollard tree species identified in paintings are oaks (Quercus spp.), hornbeam (Carpinus betulus), European beech (Fagus sylvatica), European chestnut (Castanea sativa), and rarely other species, too. Artists apparently often used bizarrely shaped woods to increase the dramatic atmosphere of their landscape sceneries as well as figural compositions, and the coppice and pollard trees had certainly also a symbolic meaning in some of their works.

Biscogniauxia (Hypoxylon) Canker or Dieback in Trees

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Claudia Paez ◽  
Jason A. Smith
Keyword(s):  
Water Stress ◽  
Tree Species ◽  
Soil Compaction ◽  
Urban Areas ◽  
Root Disease ◽  
Poor Health ◽  
Green Spaces ◽  
Opportunistic Pathogens ◽  
Wide Range ◽  
Quercus Spp

Biscogniauxia canker or dieback (formerly called Hypoxylon canker or dieback) is a common contributor to poor health and decay in a wide range of tree species (Balbalian & Henn 2014). This disease is caused by several species of fungi in the genus Biscogniauxia (formerly Hypoxylon). B. atropunctata or B. mediterranea are usually the species found on Quercus spp. and other hosts in Florida, affecting trees growing in many different habitats, such as forests, parks, green spaces and urban areas (McBride & Appel, 2009).  Typically, species of Biscogniauxia are opportunistic pathogens that do not affect healthy and vigorous trees; some species are more virulent than others. However, once they infect trees under stress (water stress, root disease, soil compaction, construction damage etc.) they can quickly colonize the host. Once a tree is infected and fruiting structures of the fungus are evident, the tree is not likely to survive especially if the infection is in the tree's trunk (Anderson et al., 1995).

Auswirkungen von Weiden (Salix spp.) und Pappeln (Populus spp.) im Kurzumtrieb auf die biologische Vielfalt am Beispiel von Laufkäfern (Carabidae)

2012 ◽  
Vol 64 (3) ◽  
pp. 129-139 ◽  
Author(s):  
Kristin Nerlich ◽  
Frieder Seidl ◽  
Klaus Mastel ◽  
Simone Graeff-Hönninger ◽  
Wilhelm Claupein
Keyword(s):  
Biologische Vielfalt ◽  
Populus Spp ◽  
Salix Spp

scholarly journals Comparative studies on microstructures and chemical compositions of cell walls of two solid wood floorings

2018 ◽  
Vol 64 (5) ◽  
pp. 501-508 ◽  
Author(s):  
Yurong Wang ◽  
Minglei Su ◽  
Haiyan Sun ◽  
Haiqing Ren
Keyword(s):  
Comparative Studies ◽  
Cell Walls ◽  
Solid Wood ◽  
Chemical Compositions

Effects of elevated CO2 concentration and nitrogen addition on the chemical compositions, construction cost, and payback time of subtropical trees in Cd-contaminated mesocosm soil

2021 ◽  
Author(s):  
Xiaowei Zang ◽  
Xianzhen Luo ◽  
Enqing Hou ◽  
Guihua Zhang ◽  
Xiaofeng Zhang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Elevated Co2 ◽  
Photosynthetic Rate ◽  
Tree Species ◽  
Co2 Concentration ◽  
Atmospheric Co2 ◽  
Physiological Characteristics ◽  
Chemical Compositions ◽  
N Addition ◽  
Payback Time

Abstract Rising atmospheric CO2 concentration ([CO2]) and nitrogen (N) deposition are changing plant growth, physiological characteristics, and chemical compositions; however, few studies have explored such impacts in a heavy-metal-contaminated environment. In this study, we conducted an open-top chamber experiment to explore the impacts of two years of elevated atmospheric [CO2] and N addition on the growth, physiological characteristics, and chemical compositions of five subtropical tree species in a cadmium (Cd)-contaminated environment. Results showed that N addition significantly increased concentration of leaf N and protein in five tree species, and also decreased payback time (PBT) and leaf C:N ratios and increased tree relative height growth rate (RGR-H) and basal diameter growth rate (RGR-B) in Liquidambar formosana and Syzygium hainanense. Elevated [CO2] increased leaf maximum photosynthetic rate (Amax) and concentration of total non-structural carbohydrates (TNC) and shortened PBT to offset the negative effect of Cd contamination on RGR-B in A. auriculiformis. The combined effects of elevated [CO2] and N addition did not exceed their separate effects on RGR-H and RGR-B in Castanopsis hystrix and Cinnamomum camphora. N addition significantly increased the concentration of leaf Cd by 162.1% and 338.0%, and plant Cd bio-concentration factor (BCF) by 464% and 861% in C. hystrix, and C. camphora, respectively, compared to Cd addition. Among the five tree species, the decreases in PBT and the increases in Amax, RGR-B, and concentrations of leaf protein in response to N and Cd addition under elevated [CO2] were average higher 86.7% in A. auriculiformis than other species, suggesting that the mitigation of the negative effects of Cd pollution by elevated [CO2] and N addition among five species was species-specific. Overall, we concluded that N addition and elevated [CO2] reduced Cd toxicity, and increased the growth rate in A. auriculiformis, S. hainanense and L. formosana, while maintained the growth rate in C. hystrix, and C. camphora by differently increasing photosynthetic rate, altering the leaf chemical compositions, and shortening PBT.

scholarly journals Exploratory Sampling of Spalting Fungi in the Southern Peruvian Amazon Forest

Challenges ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 32
Author(s):  
Sarath M. Vega Gutierrez ◽  
Javier F. Illescas Guevara ◽  
Claudia C. Andersen ◽  
Jose Koechlin von Stein ◽  
Seri C. Robinson
Keyword(s):  
Tree Species ◽  
Economic Value ◽  
Economic Importance ◽  
Edible Mushrooms ◽  
Amazon Forest ◽  
Peruvian Amazon ◽  
Fruiting Bodies ◽  
Wood Decomposition ◽  
Decay Fungi ◽  
Madre De Dios

Most of the research related to Peruvian Amazon fungi is focused on edible mushrooms and pathogens. Other important fungi, such as the spalting type (decay fungi that pigment wood internally), are not broadly studied, as most of them do not produce fruiting bodies and can be difficult to locate. Spalting fungi, however, are of broad economic importance due to their ability to produce pigments that enhance wood aesthetics, resulting in an increased economic value. In order to begin understanding the diversity of spalting fungi within certain regions of the Amazon, a sampling of downed trees and branches (through the opening of the xylem to identify potential pigmenting and zone line producing fungi) was done in the district of Las Piedras, Madre de Dios, Peru. Fungi suspected of causing internal pigment and zone lines were collected, cultured, isolated, and sequenced. The species found belonged to the orders Helotiales, Xylariales, Hypocreales, Russulales, Polyporales, Botryosphaeriales and two specimens of the class Leotiomycetes. The fungi collected produced pigments or zone lines in wild conditions and all of them were capable of wood decomposition. Interestingly, these are the same orders and genera as North American spalting fungi, which may indicate a correlation within species that pigment wood. The results obtained start a specific database of spalted fungi in the Amazon and, with it, help support an effort to increase the forest value of ecosystems primarily used for a few high-valued tree species.

Occurrence and Inhibition of Chitin in Cell Walls of Wood-Decay Fungi

Holzforschung ◽  
1983 ◽  
Vol 37 (5) ◽  
pp. 255-259 ◽  
Author(s):  
Bruce R. Johnson ◽  
George C. Chen
Keyword(s):  
Cell Walls ◽  
Wood Decay ◽  
Decay Fungi ◽  
Wood Decay Fungi

N2 fixation associated with wood decayed by some common fungi in western Montana

1978 ◽  
Vol 8 (3) ◽  
pp. 341-345 ◽  
Author(s):  
Michael J. Larsen ◽  
Martin F. Jurgensen ◽  
Alan E. Harvey
Keyword(s):  
Nitrogen Fixation ◽  
N2 Fixation ◽  
Tree Species ◽  
Western Montana ◽  
Decay Fungi ◽  
Woody Substrates

Decay caused by some common wood-destroying fungi in several associated tree hosts of the Intermountain forests of western Montana was evaluated as a potential environment for the fixation of dinitrogen. Differences in the rates of fixation were demonstrated between various decay stages, tree species, decay fungi, and brown and white rots. Advanced brown-rotted wood was a more favorable system for nitrogen fixation than wood partially brown rotted. Also, brown-rotted substrates proved to be more favorable than did white rotted, particularly Pseudotsugamenziesii (Mirb.) Franco wood decayed by Fomitopsispinicola (Swartz ex Fr.) Karst. Data demonstrate that a nitrogenase function coexists naturally with decay fungi in woody substrates and that appreciable and significant amounts of nitrogen are fixed in these substrates.

Basidiomycete decay fungi within stems of Nothofagus windfalls in a Southern Hemisphere beech forest

2008 ◽  
Vol 38 (7) ◽  
pp. 1897-1910 ◽  
Author(s):  
I. A. Hood ◽  
P. N. Beets ◽  
J. F. Gardner ◽  
M. O. Kimberley ◽  
M. W.P. Power ◽  
...  
Keyword(s):  
New Zealand ◽  
Southern Hemisphere ◽  
Tree Species ◽  
Coarse Woody Debris ◽  
Woody Debris ◽  
Beech Forest ◽  
Study Data ◽  
Decay Fungi ◽  
Mean Diameter

Fungi were isolated to determine the predominant decomposer species active in the coarse woody debris in a beech forest in the central North Island of New Zealand. Basidiomycetes were obtained in 55% of 4569 isolation attempts from discs cut from six trees each of Nothofagus fusca (Hook. F.) Oerst. and Nothofagus menziesii (Hook. F.) Oerst. uprooted during a storm 24 years earlier. Percentage yields varied significantly among trees but not between tree species. However, for N. fusca, basidiomycetes were obtained less frequently from stems of greater mean diameter. In total, 96% of basidiomycete isolates were composed of 18 species, the most abundant being Armillaria novae-zelandiae (G. Stev.) Herink, mainly present in the outer 12 cm, and Ganoderma cf. applanatum sensu Wakef. and Cyclomyces tabacinus (Mont.) Pat., which penetrated more deeply. These fungi were distributed along the stems as somatically incompatible colonies reaching lengths of 11, 2, and 3 m for each species, respectively; those of G. cf. applanatum were separated by brown pseudosclerotial plates. Fruiting of these species was significantly associated with isolation of cultures and, for G. cf. applanatum and C. tabacinus, provided a reliable guide to stem colonization. Basidiomycete diversity in the Nothofagus stems was greater than in two podocarp species in an earlier study. Data from this investigation are being used to assess how decay fungi, together with other factors, influence rates of decomposition of indigenous coarse woody debris.

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