The temperature and length for the release of primary and induction of secondary physiological dormancy in Korean pine (Pinus koraiensis Sieb. et Zucc.) seeds

New Forests ◽  
2019 ◽  
Vol 51 (4) ◽  
pp. 657-669 ◽  
Author(s):  
Y. Song ◽  
J. J. Zhu ◽  
Q. L. Yan
Keyword(s):  
Pinus Koraiensis ◽  
Korean Pine ◽  
Physiological Dormancy

scholarly journals Tree-ring-based spring precipitation reconstruction in the Sikhote-Alin' Mountain range

2021 ◽  
Vol 17 (2) ◽  
pp. 951-967
Author(s):  
Olga Ukhvatkina ◽  
Alexander Omelko ◽  
Dmitriy Kislov ◽  
Alexander Zhmerenetsky ◽  
Tatyana Epifanova ◽  
...  
Keyword(s):  
Climate Variability ◽  
Tree Ring ◽  
Southern Oscillation ◽  
Russian Far East ◽  
Pinus Koraiensis ◽  
Mountain Range ◽  
Korean Pine ◽  
Sikhote Alin ◽  
The Impact ◽  
Standard Tree

Abstract. Climate reconstructions provide important insight into past climate variability and help us to understand the large-scale climate drivers and impact of climate change. However, our knowledge about long-term year-to-year climate variability is still limited due to the lack of high-resolution reconstructions. Here, we present the first precipitation reconstructions based on tree rings from Pinus koraiensis (Korean pine) from three sites placed along a latitudinal (330 km) gradient in the Sikhote-Alin' mountains in the Russian Far East. The tree-ring width chronologies were built using standard tree-ring procedures. We reconstructed the April–June precipitation for the southern Sikhote-Alin' (SSA), March–June precipitation for the central Sikhote-Alin' (CSA) and March–July precipitation for the northwestern Sikhote-Alin' (NSA) over the years 1602 to 2013, 1804 to 2009 and 1858 to 2013, respectively. We found that an important limiting factor for Korean pine growth was precipitation within the period when the air current coming from the continent during the cold period is replaced with the impact of the wet ocean air current. We identified that common wet years for SSA, CSA and NSA occurred in 1805, 1853, 1877, 1903, 1906, 1927, 1983 and 2009 and common dry years occurred in 1821, 1869, 1919, 1949 and 2003. Our reconstructions have 3-, 15- and 60-year periods, which suggests the influence of the El Niño–Southern Oscillation and Pacific Decadal Oscillation on the region's climate and relevant processes. Despite the impact of various global processes, the main contribution to precipitation formation in the study area is still made by the Pacific Ocean, which determines their amount and periodicity.

scholarly journals Height-diameter relationship for Pinus koraiensis in Mengjiagang Forest Farm of Northeast China using nonlinear regressions and artificial neural network models

2019 ◽  
Vol 65 (No. 4) ◽  
pp. 134-143 ◽  
Author(s):  
Tuan Nguyen Thanh ◽  
Tai Dinh Tien ◽  
Hai Long Shen
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Northeast China ◽  
Tree Height ◽  
Pinus Koraiensis ◽  
Accurate Estimation ◽  
Korean Pine ◽  
Ann Models ◽  
Artificial Neural ◽  
Forest Farm

Korean pine (Pinus koraiensis Sieb. et Zucc.) is one of the highly commercial woody species in Northeast China. In this study, six nonlinear equations and artificial neural network (ANN) models were employed to model and validate height-diameter (H-DBH) relationship in three different stand densities of one Korean pine plantation. Data were collected in 12 plots in a 43-year-old even-aged stand of P. koraiensis in Mengjiagang Forest Farm, China. The data were randomly split into two datasets for model development (9 plots) and for model validation (3 plots). All candidate models showed a good perfomance in explaining H-DBH relationship with error estimation of tree height ranging from 0.61 to 1.52 m. Especially, ANN models could reduce the root mean square error (RMSE) by the highest 40%, compared with Power function for the density level of 600 trees. In general, our results showed that ANN models were superior to other six nonlinear models. The H-DBH relationship appeared to differ between stand density levels, thus it is necessary to establish H-DBH models for specific stand densities to provide more accurate estimation of tree height.

Catalytic Pyrolysis of Korean Pine (Pinus koraiensis) Nut Shell Over Mesoporous Al2O3

2018 ◽  
Vol 18 (2) ◽  
pp. 1351-1355
Author(s):  
Young-Min Kim ◽  
Gwang Hoon Rhee ◽  
Chang Hyun Ko ◽  
Tae Uk Han ◽  
Sang Chai Kim ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Pinus Koraiensis ◽  
Korean Pine

Purification and Characterization of the 7S Vicilin from Korean Pine (Pinus koraiensis)

2008 ◽  
Vol 56 (17) ◽  
pp. 8159-8165 ◽  
Author(s):  
Tengchuan Jin ◽  
Silvia M. Albillos ◽  
Yu-Wei Chen ◽  
Mahendra H. Kothary ◽  
Tong-Jen Fu ◽  
...  
Keyword(s):  
Pinus Koraiensis ◽  
Korean Pine ◽  
Purification And Characterization

scholarly journals Height Growth of Korean Pine Seedlings Planted under Strip-Cut Larch Plantations in Northeast China

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Toshiaki Owari ◽  
Shinichi Tatsumi ◽  
Liangzhi Ning ◽  
Mingfang Yin
Keyword(s):  
Northeast China ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Height Growth ◽  
Pinus Koraiensis ◽  
Stand Age ◽  
Seedling Height ◽  
Korean Pine ◽  
Open Site ◽  
Pine Seedlings

To develop two-storied forest management of larch plantations in Northeast China, this study examined the height growth of Korean pine (Pinus koraiensisSieb. et Zucc.) seedlings planted under strip-cut larch canopies. We measured the height growth of the underplanted seedlings 4 years after planting. The larch canopies were of varying stand age (12, 17, and 37 years) and strip-cut width (4.5, 6.0, and 7.5 m). We measured the seedling height growth in an open site (i.e., a site with no canopy). Underplanted seedlings had a smaller height growth (12.1–20.1 cm year−1) than the seedlings planted in the open site (23.7 cm year−1). The seedlings underplanted in the wider strip-cuts tended to have greater height growth than the seedlings underplanted in the narrowest strip-cuts. A generalized linear mixed model analysis predicted the greatest seedling height growth in the open site. A 36–47% reduction in annual height growth was predicted for the narrowest strip-cuts (4.5 m) versus the open site, while a 13–36% reduction in annual height growth was predicted for the wider strip-cuts (6.0–7.5 m) versus the open site. To maintain adequate height growth, forest managers are recommended to create wider strip-cuts (i.e., ≥6.0 m) for the purpose of underplanting Korean pine seedlings in larch plantations.

Anatomical Comparison Between Compression Wood and Opposite Wood in a Branch of Korean Pine (Pinus Koraiensis)

IAWA Journal ◽  
1988 ◽  
Vol 9 (3) ◽  
pp. 275-284 ◽  
Author(s):  
Phil Woo Lee ◽  
Young Geun Eom
Keyword(s):  
Compression Wood ◽  
Pinus Koraiensis ◽  
Korean Pine ◽  
Qualitative And Quantitative ◽  
Opposite Wood

Compression wood and opposite wood formed in the branch of Korean pine (Pinus koraiensis S. et Z.) is described and compared in qualitative and quantitative anatomical aspects.

scholarly journals Devosia humi sp. nov., isolated from soil of a Korean pine (Pinus koraiensis) garden

2016 ◽  
Vol 66 (1) ◽  
pp. 341-346 ◽  
Author(s):  
Juan Du ◽  
MooChang Kook ◽  
Shahina Akter ◽  
Hina Singh ◽  
KyungHwa Won ◽  
...  
Keyword(s):  
Pinus Koraiensis ◽  
Korean Pine

scholarly journals Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 416 ◽  
Author(s):  
Jian Zhang ◽  
Junhua Ying ◽  
Feng Cheng ◽  
Hongguang Liu ◽  
Bin Luo ◽  
...  
Keyword(s):  
Surface Quality ◽  
Material Removal ◽  
Medium Density Fiberboard ◽  
Great Influence ◽  
Densified Wood ◽  
Pinus Koraiensis ◽  
Medium Density ◽  
Korean Pine ◽  
Material Deformation ◽  
Pile Up

As an important fine machining method, sanding operation is widely used in most engineered materials. In wood sanding, high material removal rate and surface quality are expected. Clarifying the material deformation in the sanding process is the key to improving sanding efficiency. In this study, a single grit scratching method is used to investigate the material removal and surface creation of medium-density fiberboard (MDF) and Korean Pine (Pinus koraiensis Sieb.et Zucc). It is found that there are some differences in the material deformation during scratching Korean Pine and MDF, compared with grinding metals. A mechanism based on the anatomical cavities absorbing effect was proposed to account for the differences. This mechanism helps to explain why tiny, or even no, “pile-up” (like swelling ridges created by the ploughing effect) occurs during scratching Korean Pine, especially in longitudinal direction. MDF as a densified wood composite presented more pile-up and the variation of pile-up ratio was investigated. The porosity and wood grain direction exert great influence on material removal and surface creation in wood sanding. At the rubbing stage, a new method was developed to confirm the elastic spring back effect both in MDF and Korean Pine scratching. The results obtained and the approaches used in this paper could provide insights into the material removal and surface creation research of other wood species and wood composites to finally improve sanding efficiency and surface quality.

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