scholarly journals Climatic Factors Shape the Spatial Distribution of Concentrations of Triterpenoids in Barks of White Birch (Betula Platyphylla Suk.) Trees in Northeast China

Forests ◽  
2017 ◽  
Vol 8 (9) ◽  
pp. 334 ◽  
Author(s):  
Shenglei Guo ◽  
Dehui Zhang ◽  
Huanyong Wei ◽  
Yinan Zhao ◽  
Yibo Cao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Northeast China ◽  
Climatic Factors ◽  
Betula Platyphylla ◽  
White Birch ◽  
Betula Platyphylla Suk

scholarly journals A model form for stem taper and volume estimates of Asian white birch (Betula platyphylla): a major commercial tree species of Northeast China

2019 ◽  
pp. 274-286 ◽  
Author(s):  
Muhammad Khurram Shahzad ◽  
Amna Hussain ◽  
Lichun Jiang
Keyword(s):  
Northeast China ◽  
Individual Species ◽  
Betula Platyphylla ◽  
White Birch ◽  
Box Plots ◽  
Stem Taper ◽  
Overall Evaluation ◽  
Betula Platyphylla Suk ◽  
Volume Estimates ◽  
Volume Equations

Stem taper functions are valuable tools for the study of stem profile and predict volume estimates. Such functions have long been analyzed for different birch species in the world. However, Asian white birch (Betula platyphylla Suk.) has not yet been investigated as an individual species in China or abroad. This study presents stem taper and volume equations for B. platyphylla in Northeast China. Eight commonly used taper functions were fit to the data of 615 destructively sampled trees from two regions of Northeast China. A second-order continuous autoregressive error structure was incorporated to address the autocorrelation in the data and to achieve the valid parameter estimation. The condition number was used to detect the multicollinearity in the models. The taper functions were compared in terms of overall evaluation statistics and by examining the box plots of diameter and volume residuals against relative heights and diameter classes. The equations of A. Kozak (2004, For. Chron. 80(4): 507–515; model 2), Z. Fang et al. (2000, For. Sci. 46(1): 1–12), and H. Bi (2000, For. Sci. 46(3): 397–409) were the leading models for diameter and volume estimates. Overall, the equation of Z. Fang et al. (2000, For. Sci. 46(1): 1–12) exhibited the best results for estimating diameter and total and merchantable volumes in terms of statistical performance and lower multicollinearity.

Influence of Nitrogen, Phosphorus, and Potassium Fertilization on Flowering and Expression of Flowering-Associated Genes in White Birch (Betula platyphylla Suk.)

2011 ◽  
Vol 29 (4) ◽  
pp. 794-801 ◽  
Author(s):  
Shan Wang ◽  
Jing Jiang ◽  
Tianfang Li ◽  
Huiyu Li ◽  
Chen Wang ◽  
...  
Keyword(s):  
Betula Platyphylla ◽  
White Birch ◽  
Potassium Fertilization ◽  
Betula Platyphylla Suk ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Additive tree biomass equations for Betula platyphylla Suk. plantations in Northeast China

2018 ◽  
Vol 75 (2) ◽  
Author(s):  
Xiuwei Wang ◽  
Dehai Zhao ◽  
Guifen Liu ◽  
Chengjun Yang ◽  
R. O. Teskey
Keyword(s):  
Northeast China ◽  
Betula Platyphylla ◽  
Tree Biomass ◽  
Additive Tree ◽  
Biomass Equations ◽  
Betula Platyphylla Suk

Distribution and expression characteristics of triterpenoids and OSC genes in white birch (Betula platyphylla suk.)

2011 ◽  
Vol 39 (3) ◽  
pp. 2321-2328 ◽  
Author(s):  
Jing Yin ◽  
Chun-Lin Ren ◽  
Ya-Guang Zhan ◽  
Chun-Xiao Li ◽  
Jia-Lei Xiao ◽  
...  
Keyword(s):  
Betula Platyphylla ◽  
White Birch ◽  
Betula Platyphylla Suk ◽  
Expression Characteristics

Identification of genes associated with male sterility in a mutant of white birch (Betula platyphylla Suk.)

Gene ◽  
2015 ◽  
Vol 574 (2) ◽  
pp. 247-254 ◽  
Author(s):  
Xuemei Liu ◽  
Ying Liu ◽  
Chuang Liu ◽  
Minxiao Guan ◽  
Chuanping Yang
Keyword(s):  
Male Sterility ◽  
Betula Platyphylla ◽  
White Birch ◽  
Betula Platyphylla Suk

scholarly journals Stem taper functions for white birch (Betula platyphylla) and costata birch (Betula costata) in the Xiaoxing’an Mountains, northeast China

2021 ◽  
Author(s):  
Amna Hussain ◽  
Muhammad Khurram Shahzad ◽  
Harold E Burkhart ◽  
Lichun Jiang
Keyword(s):  
Tree Species ◽  
Boreal Forests ◽  
Northeast China ◽  
Model Comparison ◽  
Betula Platyphylla ◽  
White Birch ◽  
Initial Attempt ◽  
Stem Taper ◽  
Xiaoxing’An Mountains ◽  
Taper Models

Abstract White birch (Betula platyphylla Sukaczev) and costata birch (Betula costata Trautv.) are valuable hardwood tree species growing in northeast China. Several taper studies have analysed birch species in the countries harbouring the boreal forests. However, this study presents an initial attempt to develop stem taper models using the fixed- and mixed-effects modelling for white birch and costata birch in Xiaoxing’an Mountains, northeast China. Ten commonly used taper models were evaluated by using 228 destructively sampled trees of both tree species comprising of 4582 diameter and height measurements. The performance of these models was tested in predicting diameter at any height, total volume and merchantable volume (10 and 20 cm top diameters). We incorporated a second-order continuous-time error structure to adjust the inherent autocorrelation in the data. The segmented model of Clark best predicted the diameter and total or merchantable volume when the upper stem diameter at 5.3 m was available. When diameter measurements at 5.3 m were not available, the models of Kozak and Max and Burkhart were superior to other models for white birch and costata birch, respectively. After model comparison, the best model of Clark was refitted as the NLME model.

Electrical Impedance Spectroscopy Estimation of Water Content in Leaves and Stems of White Birch (Betula platyphylla) Under Flooding Stress

2014 ◽  
Vol 49 (1) ◽  
pp. 105 ◽  
Author(s):  
Meng Yu ◽  
Gong Ruijuan ◽  
Di Bao ◽  
Xiang Diying ◽  
Zhang Gang ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Water Content ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy ◽  
Betula Platyphylla ◽  
White Birch ◽  
Flooding Stress

scholarly journals Increased Litter Greatly Enhancing Soil Respiration in Betula platyphylla Forests of Permafrost Region, Northeast China

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 89
Author(s):  
Hong Wei ◽  
Xiuling Man
Keyword(s):  
Soil Respiration ◽  
Carbon Cycle ◽  
Soil Carbon ◽  
Northeast China ◽  
Stand Age ◽  
Permafrost Region ◽  
Betula Platyphylla ◽  
Litter Input ◽  
Litter Manipulation ◽  
And Control

The change of litter input can affect soil respiration (Rs) by influencing the availability of soil organic carbon and nutrients, regulating soil microenvironments, thus resulting in a profound influence on soil carbon cycle of the forest ecosystem. We conducted an aboveground litterfall manipulation experiment in different-aged Betula platyphylla forests (25-, 40- and 61-year-old) of the permafrost region, located in the northeast of China, during May to October in 2018, with each stand treated with doubling litter (litter addition, DL), litter exclusion (no-litter, NL) and control litter (CK). Our results indicated that Rs decreased under NL treatment compared with CK treatment. The effect size lessened with the increase in the stand age; the greatest reduction was found for young Betula platyphylla forest (24.46% for 25-year-old stand) and tended to stabilize with the growth of forest with the reduction of 15.65% and 15.23% for 40-and 61- year-old stands, respectively. Meanwhile, under DL treatment, Rs increased by 27.38%, 23.83% and 23.58% on 25-, 40- and 61-year-old stands, respectively. Our results also showed that the increase caused by DL treatment was larger than the reduction caused by NL treatment, leading to a priming effect, especially on 40- and 61-year-old stands. The change in litter input was the principal factor affecting the change of Rs under litter manipulation. The soil temperature was also a main factor affecting the contribution rate of litter to Rs of different-aged stands, which had a significant positive exponential correlation with Rs. This suggests that there is a significant relationship between litter and Rs, which consequently influences the soil carbon cycle in Betula platyphylla forests of the permafrost region, Northeast China. Our finding indicated the increased litter enhanced the Rs in Betula platyphylla forest, which may consequently increase the carbon emission in a warming climate in the future. It is of great importance for future forest management in the permafrost region, Northeast China.

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