Response to Climate Change about Radial Growth of Larix gmelinii Main Forest Types in Daxing’anling Mountains

2011 ◽  
Vol 361-363 ◽  
pp. 1724-1729
Author(s):  
Mei Qing ◽  
Qiu Liang Zhang ◽  
Dong Zhi Wang ◽  
Gao Wa Chen
Keyword(s):  
Correlation Analysis ◽  
Radial Growth ◽  
Function Analysis ◽  
Ring Width ◽  
Larix Gmelinii ◽  
Response Functions ◽  
Climate Factors ◽  
Forest Types ◽  
Ledum Palustre ◽  
Larix Gmelini

Tree-ring width chronologies were developed for Larix gmelini of main forest types in Daxinganling mountains, and by correlation analysis and response function analysis illustrate difference empact of main climate factors on radial growth of Larix gmelini. The result shows ring-width chronologies of Larix gmelini we have made containing a lot of climate informations. In the correlation analysis, impact of temparature on Larix gmelinii is higher than presipitation, average month temperature is negatively correlated with ring-width growth and correlation efficient is higher, especially February temperature is significantly negatively correlated with radial growth of Larix gmelini three forest types. Response functions analysis indicating that Bryaceae—Larix gmelinii forest is more sensitive to climate and the response is complex. The sensitivity are: Bryaceae—Larix gmelinii forest > Ledum palustre—Larix gmelinii forest > Bryaceae—Larix gmelinii forest.

scholarly journals First Dendroclimatological Insight into Austrian Pine (Pinus nigra Arnold) Climate-Growth Relationship in Belgrade Area, Serbia

2020 ◽  
Vol 11 (2) ◽  
pp. 127-134
Author(s):  
Branko Stajić ◽  
Marko Kazimirović ◽  
Vojislav Dukić ◽  
Nenad Radaković
Keyword(s):  
Correlation Analysis ◽  
Tree Ring ◽  
Response Function ◽  
Positive Impact ◽  
Function Analysis ◽  
Pearson Correlation ◽  
Ring Width ◽  
Growth Data ◽  
The Impact ◽  
Precipitation And Temperature

In order to assess the impact of climate variations on Austrian pine forest in the Belgrade area, the radial growth of artificially-established Austrian pine trees and its dependence on temperature and precipitation was studied using dendroclimatological methods. The site is classified as Quercetum-frainetto cerris Rudski. Standard and residual chronologies were established and several common statistics were calculated. A dendroclimatic study was carried out using the correlation and response function analysis. The Pearson correlation coefficients between the chronology indices and 13 seasonal (3-month period) precipitation and temperature data were calculated for the period from 1959 to 2014. The applied response function analysis included 24 precipitation and temperature variables from October of the prior year to September of the current year. The results of the correlation analysis pointed out that there was a strong tendency towards a positive response to the summer and late summer/early autumn precipitation and a weak significant negative response to the spring and summer temperatures. Climate-growth relationships were further first studied using the response functions for the significant seasons that were detected from the correlation analysis and then for individual months from previous October to current September. These results also highlighted the findings that higher precipitation in the current summer months has a beneficial effect on the tree-ring width. The conducted correlation between the residual chronology and the Standardised Precipitation Evapotranspiration Index indicated that a high summer value of this drought index had a positive impact on the pine growth and reinforced the previously detected relevance of September as an important month for the Austrian pine growth. These preliminary results point out that some additional climate-Austrian pine growth studies (application of various tree-ring features, growth data with a much longer time span, more sites/stands, etc.) should be performed to obtain new and valuable knowledge important for the sustainable management of Austrian pine forests.

scholarly journals Influence of Climate on Radial Growth of Black Pine on the Mountain Regions of Southwestern Turkey

Plants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 276
Author(s):  
Mehmet Doğan ◽  
Nesibe Köse
Keyword(s):  
Cluster Analysis ◽  
Tree Ring ◽  
Hierarchical Cluster Analysis ◽  
Radial Growth ◽  
Function Analysis ◽  
Ring Width ◽  
Hierarchical Cluster ◽  
Climatic Conditions ◽  
Black Pine ◽  
Mountain Regions

In this study, we identified the most important climate factors affecting the radial growth of black pine at different elevations of the mountain regions of Southwestern Turkey (Sandıras Mountain, Muğla/Turkey). We used four black pine tree-ring chronologies, which represent upper and lower distribution limits of black pine forest on the South and North slopes of Sandıras Mountain. The relationships between tree-ring width and climate were identified using response function analysis. We performed hierarchical cluster analysis to classify the response functions into meaningful groups. Black pine trees in the mountain regions of Southwestern Turkey responded positively to a warmer temperature and high precipitation at the beginning of the growing season. As high summer temperatures exacerbated drought, radial growth was affected negatively. Hierarchical cluster analysis made clear that elevation differences, rather than aspect, was the main factor responsible for the formation of the clusters. Due to the mountainous terrain of the study area, the changing climatic conditions (air temperature and precipitation) affected the tree-ring widths differently depending on elevation.

scholarly journals Relationships Between Climatic Variables and Tree-Ring Width of Silver Fir (Abies alba Mill.) in Kozara National Park (Bosnia and Herzegovina)

2020 ◽  
Vol 11 (1) ◽  
pp. 17-27
Author(s):  
Jelena Subotić ◽  
Vojislav Dukić ◽  
Tatjana Popov ◽  
Goran Trbić ◽  
Zoran Maunaga ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Tree Ring ◽  
Bosnia And Herzegovina ◽  
Radial Growth ◽  
National Park ◽  
Sampling Site ◽  
Ring Width ◽  
Abies Alba ◽  
Silver Fir ◽  
Tree Ring Width

Silver fir (Abies alba Mill.) is the most common conifer species in Bosnia and Herzegovina. The paper describes the development of a silver fir master tree-ring chronology from Kozara National Park and analyzes the influence of the climate conditions on tree-ring widths. The knowledge concerning the effect of climate on cambium activity and, as a result, on tree growth is of great importance for silviculture, which is particularly complex in terms of deterioration of health condition. Four sites were selected for sampling at Kozara National Park. At each sampling site, 15 dominant trees were drilled with Pressler’s increment borer at breast height. The development of chronology included three steps: i) cross-dating of a series of tree-ring width and checking of their quality using the COFECHA program, ii) data standardization in the ARSTAN program, and iii) master chronology development. Correlation analysis was performed in order to determine the links between tree-ring width and climate (primarily temperature and precipitation). In the 88-year-long master chronology, pointer years analysis identified five positive and nine negative years. Correlation analysis revealed that precipitation had stronger and more significant impact on silver fir radial growth, particularly at the beginning of the growing season, in April and May (r=0.175 and r=0.318, respectively), and in the crucial July−September period (r in the range of 0.143−0.222). The highest negative correlation coefficient with temperature was determined for September of the previous year (r=-0.282) and then for summer months (July and August) of the current year (r=-0.184 and r=-0.272, respectively). In addition, statistically significant correlation between radial growth and the Forestry Aridity Index was determined (r=-0.390). The results of tree-ring width climate analysis obtained in this study are in accordance with other studies carried out in Bosnia and Herzegovina and in the surrounding area.

Ecological interpretation of tree-ring width and intraannual density fluctuations inPinus sylvestrison dry sites in the central Alps and Siberia

2001 ◽  
Vol 31 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Andreas Rigling ◽  
Philipp O Waldner ◽  
Theodor Forster ◽  
Otto U Bräker ◽  
Antti Pouttu
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Function Analysis ◽  
Ring Width ◽  
Growing Season ◽  
Density Fluctuations ◽  
Climatic Data ◽  
Central Alps ◽  
Tree Ring Width ◽  
Soil Substrate

The radial growth of Pinus sylvestris L. from nine sites at the semiarid lower forest border of the central Alps (Switzerland) and central Siberia (Russia) has been investigated using dendroecological methods. Tree growth differed according to soil substrate, with trees on dune sites showing lower mean ring widths, lower mean sensitivities, and higher autocorrelation. The relationships between climate and tree-ring width were studied using response function analysis. Independent of the climatic zone and the soil substrate, precipitation just before and at the beginning of the growing season is positively correlated with radial growth. The climatic response of dune sites is low, possibly because of the poor water-holding capacity and the high permeability of the sandy soils. Intraannual density fluctuations (IADFs) were observed at all the sites. Most IADFs were found in latewood. On dunes, fewer cores contain IADFs, and their frequency is lower. All stands showed significant relationships between IADF frequency and tree-ring width (positive) and ring age (negative). For Swiss sites, moist-cool conditions in the middle of the growing season are demonstrated as the triggering factor for IADFs. For the Russian sites, inadequate climatic data made it impossible to demonstrate any climate dependence of IADFs.

CAMBIAL BEHAVIOR WITH REFERENCE TO CELL LENGTH AND RING WIDTH IN PINUS STROBUS L.

1962 ◽  
Vol 40 (8) ◽  
pp. 1057-1062 ◽  
Author(s):  
M. W. Bannan
Keyword(s):  
Inverse Relationship ◽  
Ring Width ◽  
Pinus Strobus ◽  
Growth Patterns ◽  
Cell Length ◽  
Annual Rings ◽  
Forest Types ◽  
Thuja Occidentalis ◽  
Cambial Cells ◽  
Individual Trees

The relationships between width of annual rings, length of wood cells, and frequency of anticlinal (multiplicative) divisions in fusiform cambial cells were studied by reference to trees of various growth patterns. The trees selected ranged from 8 to 20 in. diameter and included both open-grown specimens with branches close to the ground and forest types with tall, slender shafts. Much fluctuation was noted among individual trees, but in general there was, in the peripheral growth, an inverse relationship between length of wood cells and width of annual rings. The frequency of anticlinal divisions in the cambium remained at a more or less uniform rate in trees with rings from 1.5 to 5 mm wide, but rose sharply when ring width fell below 1.3 mm. This was in contrast to the situation observed earlier in Thuja occidentalis where the rise in frequency of anticlinal divisions was slight and occurred only in trees with rings less than 0.3 mm wide.

scholarly journals Responses of radial growth, wood density and fiber traits to planting space in poplar plantations at a lowland site

2021 ◽  
Author(s):  
Yanhua Zhang ◽  
Shengzuo Fang ◽  
Ye Tian ◽  
Linlin Wang ◽  
Yi Lv
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Pearson Correlation ◽  
Wood Fiber ◽  
Negative Relationship ◽  
Basic Density ◽  
Ring Width ◽  
Tree Ring Width ◽  
Wood Basic Density ◽  
Fiber Traits

AbstractPoplar is raw material for various panel, paper and fiber products. The 12 sample trees of clone Nanlin-895 from four spacings were destructively harvested after thirteen growing seasons to assess the influence of spacing on radial growth and wood properties. Spacing significantly affected tree-ring width and wood basic density (p < 0.05) but not fiber traits. The highest diameter and wood basic density at breast height (1.3 m) was in 6 m × 6 m and 3 m × 8 m spacings, respectively. However, no significant differences in tree-ring width, wood basic density and fiber traits were observed among the four sampling directions in discs taken at 1.3 m for each spacing. Growth rings from the pith and tree heights had significant effects on wood basic density and fiber anatomical characteristics, highlighting obvious temporal-spatial variations. Pearson correlation analysis showed a significantly negative relationship of tree-ring width to wood basic density, fiber length and fiber width, but a significantly positive relationship to hemicellulose. There was no relationship with cellulose and lignin contents. Based on a comprehensive assessment by the TOPSIS method, the 6 m × 6 m spacing is recommended for producing wood fiber at similar sites in the future.

scholarly journals Growth and yield estimation of Chamaecyparis spp. through tree ring analysis

2013 ◽  
Vol 22 (2) ◽  
pp. 36-42 ◽  
Author(s):  
D. K. Kharal ◽  
T. Fujiwara
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Ring Width ◽  
Forest Products ◽  
Growth And Yield ◽  
Tree Age ◽  
Biomass Estimation ◽  
Tree Ring Analysis ◽  
Ring Density ◽  
Ring Analysis

Tree ring analysis is one of the most useful methods in volume and biomass estimation especially of the conifer trees. Ring width and ring density are important parameters in dendrochronological research. The present research was carried out with the aim of estimating the radial and volumetric growth of the Japanese Cypress trees (Chamaecyperis obstusa and C. pisifera). Destructive method was used while collecting the wood samples from the selected trees. Ring width and ring density were measured using soft X-ray densitometry method using micro-densitometer. Computer programme, developed by the Forestry and Forest Products Research Institute, Japan was used to analyze the ring with and ring density data. The average ring width of the Chamaecyparis spp. was found to be about 3.4 mm at the age of 30 years. However, two types of growth pattern were observed in the trees. Average radial growth was about 5% every year during the first 20 years of the tree age, whereas, the average radial growth was negative during the age of 20–30 years. Average density of the tree rings were increased by about 11% in each height of the trees starting from the ground. Similarly, the stem density decreased by about 3.4% annually along the radial direction from the pith.DOI: http://dx.doi.org/10.3126/banko.v22i2.9197Banko Janakari: A Journal of Forestry Information for NepalVol. 22, No. 2, 2012 November Page: 36-42 Uploaded date: 12/1/2013 

scholarly journals Business results change under effects of farm size and degree of production specialization

2003 ◽  
Vol 48 (2) ◽  
pp. 205-216 ◽  
Author(s):  
Ljubomir Bastajic
Keyword(s):  
Regression Analysis ◽  
Comparative Analysis ◽  
Correlation Analysis ◽  
Production Function ◽  
Function Analysis ◽  
Economic Effects ◽  
Farm Size ◽  
Business Results ◽  
Cultivable Land ◽  
Business Conditions

The study was conducted with the objective of analyzing the economic effects provoked by the change in farm size, depending on the degree of production specialization (questionnaires encompassing 30 farms of different size were used) using comparative analysis, regression analysis, correlation analysis and production function analysis. Research comprised essential parameters of business conditions on the farms and results of their business. The farms analyzed were classified according to the size of used cultivable land and degree of production specialization. In both farm groups, with different degrees of production specialization, the indices of business results were found to rise with size increase and were noticed to be the most favorable in the case of over 10 ha-farms. Comparing farms of identical size but of different degree of specialization, the following may be concluded: more favorable business results were achieved on farms with higher degree of specialization.

Ring Width Patterns of Douglas Fir in Relation to Crown Vitality and Age

IAWA Journal ◽  
1997 ◽  
Vol 18 (1) ◽  
pp. 53-67 ◽  
Author(s):  
Ingrid de Kort ◽  
Pieter Baas
Keyword(s):  
The Netherlands ◽  
Growth Performance ◽  
Radial Growth ◽  
Forest Decline ◽  
Ring Width ◽  
Douglas Fir ◽  
Age Classes ◽  
Data Set ◽  
Needle Loss

Ring width patterns often different stands, five vitality classes and three age-classes are used to explore the effect of the decline in vitality on radial growth of Douglas fir in the Netherlands and to determine the onset of this decline. A relationship between growth performance and crown vitality is found in most stands, although the variation within and between stands is large. Severe needle loss leads to serious decline in ring width. The onset of the decline varies from c. 1959 to 1976. The present data set does not enable a choice between the various causal scenarios of forest decline that have been proposed in the literature.

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