scholarly journals Additive Biomass Equations Based on Different Dendrometric Variables for Two Dominant Species (Larix gmelini Rupr. and Betula platyphylla Suk.) in Natural Forests in the Eastern Daxing’an Mountains, Northeast China

Forests ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. 261 ◽  
Author(s):  
Lihu Dong ◽  
Lianjun Zhang ◽  
Fengri Li
Keyword(s):  
Northeast China ◽  
Dominant Species ◽  
Betula Platyphylla ◽  
Natural Forests ◽  
Biomass Equations ◽  
Daxing’An Mountains ◽  
Betula Platyphylla Suk ◽  
Larix Gmelini

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

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.

scholarly journals Stem taper functions for Betula platyphylla in the Daxing’an Mountains, northeast China

2020 ◽  
Author(s):  
Muhammad Khurram Shahzad ◽  
Amna Hussain ◽  
Harold E. Burkhart ◽  
Fengri Li ◽  
Lichun Jiang
Keyword(s):  
Northeast China ◽  
Betula Platyphylla ◽  
Stem Taper ◽  
Daxing’An Mountains

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 Forest plant and macrofungal differences in the Greater and Lesser Khingan Mountains in Northeast China: A regional-historical comparison and its implications

2021 ◽  
Author(s):  
Yuanyuan Wang ◽  
Hui Wen ◽  
Kai Wang ◽  
Jingxue Sun ◽  
Jinghua Yu ◽  
...  
Keyword(s):  
Northeast China ◽  
Dominant Species ◽  
Local Economy ◽  
Forest Composition ◽  
Historical Records ◽  
Historical Comparison ◽  
Composition And Structure ◽  
Total State ◽  
The 1960S ◽  
Forest Plants

AbstractForests in Northeast China in the Greater and Lesser Khingan Mountains (GKM and LKM) account for nearly 1/3 of the total state-owned forests in the country. Regional and historical comparisons of forest plants and macrofungi will favor biological conservation, forest management and economic development. A total of 1067 sampling plots were surveyed on forest composition and structure, with a macrofungi survey at Liangshui and Huzhong Nature Reserves in the center of two regions. Regional and historical differences of these parameters were analyzed with a redundancy ordination of their complex associations. There were 61–76 families, 189–196 genera, and 369–384 species, which was only 1/3 of the historical records. The same dominant species were larch and birch with Korean pine (a climax species) less as expected from past surveys in the LKM. Shrub and herb species were different in the two regions, as expected from historical records. There was 10–50% lower species diversity (except for herb evenness), but 1.8- to 4-time higher macrofungi diversity in the GKM. Compared with the LKM, both tree heights and macrofungi density were higher. Nevertheless, current heights averaging 10 m are half of historical records (> 20 m in the 1960s). Edible macrofungi were the highest proportion in both regions, about twice that of other fungal groups, having important roles in the local economy. A major factor explaining plant diversity variations in both regions was herb cover, followed by shrubs in the GKM and herb-dominant species in the LKM. Factors responsible for macrofungi variations were tree density and shrub height. Vaccinium vitis-idaea and Larix gmelinii in the GKM but tree size and diversity were important factors in the LKM. Our findings highlighted large spatial and historical differences between the GKM and LKM in plant-macrofungal composition, forest structure, and their complex associations, which will favor precise conservation and management of forest resources in two region in the future.

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.

Emissions of nitrous oxide from continuous permafrost region in the Daxing'an Mountains, Northeast China

2019 ◽  
Vol 198 ◽  
pp. 34-45 ◽  
Author(s):  
Weifeng Gao ◽  
Yunlong Yao ◽  
Hong Liang ◽  
Liquan Song ◽  
Houcai Sheng ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Northeast China ◽  
Permafrost Region ◽  
Continuous Permafrost ◽  
Daxing’An Mountains

Effect of doubled CO2 on morphology: Inhibition of stomata development in growing birch (Betula platyphylla Suk.) leaves

2005 ◽  
Vol 52 (2) ◽  
pp. 171-175 ◽  
Author(s):  
Z.-J. Mao ◽  
Y.-J. Wang ◽  
X.-W. Wang ◽  
P. Yu. Voronin
Keyword(s):  
Betula Platyphylla ◽  
Betula Platyphylla Suk

scholarly journals Linkage map construction and QTL analysis for Betula platyphylla Suk using RAPD, AFLP, ISSR and SSR

2012 ◽  
Vol 61 (1-6) ◽  
pp. 1-9 ◽  
Author(s):  
Kaixuan Zhang ◽  
Dan Wang ◽  
Chuanping Yang ◽  
Guanjun Liu ◽  
Guifeng Liu ◽  
...  
Keyword(s):  
Linkage Map ◽  
Average Distance ◽  
Interval Mapping ◽  
Betula Platyphylla ◽  
Stem Height ◽  
Trait Variation ◽  
Mapping Strategy ◽  
Map Construction ◽  
Betula Platyphylla Suk ◽  
Segregating Population

AbstractA linkage map for Betula platyphylla Suk was constructed based on RAPD, ISSR, AFLP and SSR markers by a pseudo-testcross mapping strategy. A F1segregating population including 80 progenies was obtained from the cross between two superior trees selected from Qinghai and Wangqing provenance, respectively. The paternal map was constructed with 282 markers consisting of 14 major and 15 minor (5 triplets and 10 doublets) linkage groups and spanning 1131 cM at an average distance of 4.0 cM between adjacent markers. The maternal map has 277 markers consisting of 15 major and 8 minor (5 triplets and 3 doublets) groups covering 1288 cM at an average distance of 4.6 cM between adjacent markers. In the same pedigree we investigated association of genetic markers with seedling stem height and circumference. The composite interval mapping was used to detect the number of quantitative trait loci and their position on the genetic linkage maps. Three QTLs (one on the male map and two on the female map) were found explaining 13.4%, 17.5% and 18.8% of the trait variation, respectively.

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