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Modeling the dynamics of a spruce forest and dwarf mistletoe population:a coupled system

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Journal of Forestry Research 2021年第4期32卷 1579-1585页

作者： Dianguang Xiong Zhouyuan Li Yingmei Liang Chengming Tian College of Forestry Beijing Forestry UniversityBeijing 100083People’s Republic of China Institute of Ecology College of Urban and Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking UniversityBeijing 100871People’s Republic of China Museum of Beijing Forestry University Beijing Forestry UniversityBeijing 100083People’s Republic of China

The parasitic plant dwarf mistletoe(Arceuthobium) is currently one of the most threatening infestations of coniferous forests worldwide,especially in Eurasia and North America,but its population dynamics in relation to one of its hosts(spruce) remain ***,toward understanding the population dynamics,differential equations were used to construct a life history model for the two populations,and two relatively independent subsystems,host and parasite,were generated from their symbiotic relationships.A suspected-infection model was used to couple *** resulting models were used to analyze structural changes in the *** each infected spruce was assumed to support 1000 parasite shoots,the spruce population first increased rapidly,then *** 2000 parasite shoots were assumed,the forest declined dramatically,slipping to zero in the 10 th year,and the spruce seedlings were unable to *** shoot population curves transformed from exponential J-shapes to logistic S-shapes,reaching population limitations as germination rates *** results provide important clues to understanding developmental trends of the present parasite population and will assist in reconstructing invasion histories.

关键词： Dwarf mistletoe spruce Population dynamic model

Spatiotemporal evidence of tree-growth resilience to climate variations for Yezo spruce(Picea jezoensis var. komarovii) on Changbai Mountain, Northeast China

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Journal of Forestry Research 2020年第3期31卷 927-936页

作者： Xuerui Gai Shoule Wang Li Zhou Jian Wu Wangming Zhou Jianhua Bi Linlin Cao Limin Dai Dapao Yu Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011People’s Republic of China Shenyang University Shenyang 110044People’s Republic of China

Global warming-induced changes in tree-growth resilience to climate variations have been widely reported for mid-and high-latitude regions around the world. Most studies have focused on the spatial variability of trees in radial growth-climate relationships on Changbai Mountain in Northeast China, but little is known about temporal changes in tree growth in response to climate. We explored the stability of effect of climate variables on radial growth of Yezo spruce [Picea jezoensis Carr. var. komarovii(***.) Cheng et ***] at 1200, 1400, and 1600 m above sea level, representing low, middle, and upper ranges of the spruce-fir mixed forest on Changbai Mountain. The results showed that the relation between tree growth and climate did not vary with altitude, but the stability of the tree-growth-climate relationship did vary with altitude as the climate changed. Radial growth of Yezo spruce at allthree elevations was influenced primarily by maximum temperature during May(Tmax5) and mean minimum temperature from January to March(Tmin1-3). More specifically, the relationship strengthened significantly at lower elevations, but weakened significantly at higher elevation, and fluctuated at mid elevations since *** in Tmin1-3 and decrease in Tmax5 were the main reasons for the decrease in the radial growth at three altitudes. The findings of this study clarified that the decrease in radial growth on Changbai Mountain is not a “divergence problem” of an unexpected decrease in tree growth in response to an increase in mean temperature and provides a reference for using tree-ring data to reconstruct climate patterns and/or predict the growth of trees under various climate change scenarios.

关键词： Altitudinal gradient Changbai Mountain Ring width Spatiotemporal stability Yezo spruce

ARTIFICIAL REGENERATION OF KOREAN spruce IN NORTHEAST CHINA

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Journal of Northeast Forestry University 1990年第1期1卷 11-15页

作者： Zhan Hongzhcn (1) Zhang Tongwei (1) Wang Fengyou (1) 1. Northeast Forestry University 150040 Harbin P. R. China

Korean spruce(Picea koraiensis Nakai)has been included as a Chinese regenerationspecies since the 1960’*** the 1970’s it became one of the four most important species in thenortheast forest region of China. Korean spruce is a timber species with a wide range of adaptation,high survival rate,and few diseases or *** of 30—year trials show that the regeneration ofkorean spruce is successful and has a prospective future.

关键词： Korcan spruce Forest regencration conifer regencration

Biomass and net productivity for spruce plantation

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Journal of Forestry Research 1999年第1期10卷 45-47页

作者：马承惠穆丽蔷姚忠良刘鹏孙剑峰

The biomass of spruce (Picea koraiensis) plantation in the Suiling district of Heilongjiang Province was systematicly studied. Net productivities and their distribution biomass of the stem, bark, branch, leaf and root on the arborous layer of spruce plantation from 6 to 31 a were investigated and stem analyses using mean sample method. The regression equations for estimating the biomass of different organs of individual trees were set up. The result showed that the biomass of stand was 151 t/hm?2 and net productivity was 11～14 t/(hm2·a).

关键词： spruce Picea koraiensis Plantation Biomass Net productivity

Alterations of Intracellular Ca^(2+) Concentration and Ultrastructure in spruce Apical Bud Cells during Seasonal Transition

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Forestry Studies in China 2004年第1期6卷 1-9页

作者： JianLingcheng SunDelan DengJiangming SongYanmei PaulH.Li KeyLaboratoryofPhotosynthesisandEnvironmentalMolecularPhysiology InstituteofBotanyChineseAcademyofSciencesBeijing100093P.R.China LaboratoryofPlantHardiness DepartmentofHorticulturalScienceUniversityofMinnesotaSt.PaulMinnesota55108USA

Potassium antimonite was used to localize Ca2+ in the apical bud cells of spruce from July 1999 to May 2000. During the period of active growth (July 14), Calcium precipitates, an indication of Ca2+ localization, were mainly distributed in vacuoles, intercellular spaces and cell walls. Few Ca2+ deposits localized in the cytosol and nucleus, showing a low level of the cytosolic and nuclear Ca2+ concentration in the warm summer. In August, some Ca2+ deposits appeared in the cytosol and nuclei, indicating that Ca2+ influx occurred in the cytosol and nucleus as the day length became shorter. From September to November, high levels of the cytosolic and nuclear Ca2+ remained. During the mid-winter (December and January), the distribution of Ca2+ deposits and the ultrastructures in the cells were altered dramatically. Plasmolysis occurred in many cells due to the protoplasmic dehydration. In addition plasmalemma invagination and nuclear chromatin aggregation also occurred. A large number of Ca2+ deposits appeared in the space between the plasmalemma and the cell wall. And also some Ca2+ deposits were distributed in the plastids. However, few Ca2+ deposits were observed in the cytosol and nuclei. By spring of the next year (May), when plants were de-acclimated and resumed active growth, Ca2+ subcellular localization essentially restored to that observed in July of the last year, i.e., the cells contained low cytosolic and nuclear Ca2+ concentrations; Ca2+ deposits were mainly distributed in the vacuoles, cell walls and intercellular spaces. The relationships between the seasonal changes of intracellular Ca2+ concentration and the development of dormancy/cold acclimation, as well as plasmolysis associated with dormancy and cold hardiness were discussed.

关键词： Ca2+-cytochemistry seasonal transition plasmolysis dormancy cold hardiness spruce

Genetic variation of Norway spruce clones regarding their natural durability, physical and chemical properties

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Advances in Bioscience and Biotechnology 2012年第8期3卷 1104-1112页

作者： Ilze Irbe Guna Noldt Uldis Grinfelds Anrijs Verovkins Aris Jansons Gerald Koch Johann Heinrich von Thunen-Institute (vTI)/Federal Research Institute for Rural Areas Forestry and Fisheries Institute of Wood Technology and Wood Biology (HTB) Hamburg Germany Latvian State Forest Research Institute “Silava” Salaspils Latvia Latvian State Institute of Wood Chemistry (LS IWC) Riga Latvia

Genetic variation of ten Norway spruce (Picea abies (L.) Karst.) clones regarding their decay resistance against brown rot fungi, as well as physical and chemical properties of clones were investigated. 31- year-old spruce clones: 26, 31, A10, A15, A7, B10, B15, B6, V7, V9 were selected across Latvia. The stem diameters of spruce clones varied between 13.0 and 20.9 cm. The wood density of clones ranged from 361 to 443 kg/m3. Klason lignin content, depending on the clone, was between 27.0%-28.9%. Cellular UV microspectrophotometry of the non-infected tracheids displayed the typical lignin distribution with highest absorbance values in the cell corners (abs280 nm 0.80) and compound middle lamellae (abs280 nm 0.48), while secondary wall showed lower lignin absorbance values (abs280 nm0.29 - 0.35). The deposition of phenolic extractives in ray parenchyma and epithelial cells of resin canals were emphasized by a significantly higher UV-absorbance (abs280 nm 0.68 to 0.78) when compared to the cell wall associated lignin. The content of acetone-soluble extractives of spruce clones varied between 1.1% - 1.8%. The x-value (natural durability) for all spruce clones after exposure to C. puteana and P. placentawas >0.90 (durability class 5, not durable). Most of clones after degradation by G. trabeum had x-value > 0.90 with exception of clones B15 and V9 that showed x-value ≤ 0.90 (durability class 4, slightly durable). Natural durability of spruce clones did not correlate with stem diameter, density, content of lignin and extractives.

关键词： Norway spruce Clones Natural Durability Brown Rot Lignin Extractives Density UV Microspectrophotometry

Essential Oil from Ether-Containing Plants of Juniper (<i>Juniperus</i>) and spruce (<i>Picea</i>) Leaves by Distillation

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Green and Sustainable Chemistry 2020年第4期10卷 109-116页

作者： Baktygul Abylaeva Tilebaldy Abdulazizov Zamira Sandybaeva Zhypargul Abdullaeva Ernis Bepiev Zakhro Akhmedova Departemnt of Pharmacy and Technology of Medications Osh State University Osh Kyrgyzstan Department of General Chemistry and Ecology Osh State University Osh Kyrgyzstan International Medical Faculty Jolon Mamytov Campus Osh State University Osh Kyrgyzstan Science and Research Department Osh State University Osh Kyrgyzstan Institute of Microbiology Academy of Sciences of the Uzbek Republic Tashkent Uzbekistan

This article is investigating the preparation of essential oil from the ether-containing plants of Juniper (Juniperus) and spruce (Picea) leaves by using the simple water distillation equipment. This water distillatio... 详细信息

关键词： Essential Oil Extract Juniper spruce Leaves Distillation Yield

Assessing Soil-Related Black spruce and White spruce Plantation Productivity

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Open Journal of Forestry 2017年第2期7卷 209-227页

作者： Shane Furze Mark Castonguay Jae Ogilvie Mina Nasr Pierre Cormier Rolland Gagnon Greg Adams Paul A. Arp Forest Watershed Research Center UNB Faculty of Forestry and Environmental Management Fredericton Canada J.D. Irving Ltd. Sussex Canada

This article focuses on modelling and mapping the productivity of black (Picea mariana) and white spruce (Picea glauca) plantations across the Black Brook forest management area in northwestern New Brunswick, Canada, encompassing about 200,000 ha. This effort involved establishing 3500 50 m2 survey plots, each informing about: plantation age (15 to 43 years), planted species type, stem count, tree height, basal area, and wood volume. All of this was supplemented with location-specific productivity predictors, i.e., xy location and specifications pertaining to soil type, soil drainage (established through digital elevation modelling by way of the depth-to-water index DTW), and years since thinning (pre-commercial and commercial), and. The DTW index, as it emulates the elevation rise away from open water features such as streams, rivers and lakes, allowed the re-mapping of existing soil borders by topographic position and drainage association. Non-linear regression analysis revealed that plantation height, basal area and volume all increased with plantation age, as to be expected. Pre-commercial thinning in plantations spruce MAI generally exceeded black spruce (MAI) by a factor of 1.25. Poor and excessive soil drainage reduced MAI. Best growth performances occurred on plantations established on well-drained calcareous soils. The best-fitted results so obtained allowed for generating black and white spruce MAI maps across the forest management area by ridge-to-valley soil and DTW location at 10 m resolution. These maps were subsequently used for site-by-site silvicultural evaluation and ranking purposes.

关键词： Forest Plantation Productivity Mapping Black spruce White spruce Soil Type & Drainage Digital Terrain Modelling

The finding of a paleo-spruce timber in Hunshandak sandy land and its paleoecological significance

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Science China Earth Sciences 1997年第6期40卷 599-604页

作者：崔海亭刘鸿雁腰希申 Department of Urban and Environmental Sciences Peking University Beijing 100871 China Institute of Forest Ecology and Environment Chinese Academy of Forestry Beijing 100091 China

A paleo-sprucc (Picea jezoensis) timber dated to (10 040 + 100) a B. P. was found in the Hunshan-dak sandy land, Inner Mongolia, which is also one of the oldest timber found in China. Pollen and mammal fossil further evidence that theropencedrymion dominated by birch and spruce existed in this area in the late period of the earlier Holocene. This finding has great significance for the analysis of paleoclimate, paleovegetation and landscape development in this area.

关键词： Hunshandak sandy land spruce (Picea jezoensis) paleoecology