USDA Forest Service - Research Papers PNW-RP最新文献_第3页

Recreational use of forests by young people 年轻人对森林的娱乐利用

USDA Forest Service - Research Papers PNW-RP Pub Date : 2020-03-01 DOI: 10.2478/frp-2020-0002

J. Cichowska

引用次数: 1

Growth of broadleaved species on post-agricultural lands introduced during the process of stand conversion with a use of artificial gaps

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0023

T. Zachara

{"title":"Growth of broadleaved species on post-agricultural lands introduced during the process of stand conversion with a use of artificial gaps","authors":"T. Zachara","doi":"10.2478/frp-2019-0023","DOIUrl":"https://doi.org/10.2478/frp-2019-0023","url":null,"abstract":"Abstract This paper presents results on the restoration of Scots pine stands established on post-agricultural lands undergoing conversion into mixed stands. Sessile oak (Quercus petraea), common beech (Fagus sylvatica) and small-leaved lime (Tilia cordata) seedlings were planted in artificially created gaps (0.02 ha to 0.05 ha each) cut in six experimental plots (Forest Districts: Bielsk, Krynki, Sobibór, Dobieszyn, Skrwilno and Łupawa) located in 20–25-years-old pine stands. The experimental plots were spread across northern, central and eastern Poland and affected by root-rot fungus (Heterobasidion annosum). Nine years after planting, the number of individual trees and shrub species, their height sum and average height were calculated for fenced artificial gaps (LSO) as well as non-fenced artificial gaps (LSN) and compared to natural gaps (LN) and non-disturbed neighboring stands (D). Results were calculated separately for the planted species (oak, lime and beech) but combined for all other species. The results indicate satisfactory restoration in all of the investigated plots except in Krynki, which is located in a relatively poor site. Significant differences appeared between height sum as well as average height of planted species in fenced compared to non-fenced gaps. Furthermore, in both, natural and artificial gaps, the species composition of the young generation was enriched with natural regeneration of pioneer species, mainly silver birch (Betula pendula), rowan (Sorbus aucuparia) and aspen (Populus tremula).","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76224080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress in physiological and genetic research concerning forest tree response to low temperature 林木对低温反应的生理和遗传研究进展

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0028

M. Novokreshchenova, Katarzyna Skowyra, M. Kempf

{"title":"Progress in physiological and genetic research concerning forest tree response to low temperature","authors":"M. Novokreshchenova, Katarzyna Skowyra, M. Kempf","doi":"10.2478/frp-2019-0028","DOIUrl":"https://doi.org/10.2478/frp-2019-0028","url":null,"abstract":"Abstract Forest trees are a great model for physiological and genetic studies of plant resistance to unfavourable environmental conditions, since the same species can successfully acclimate at different latitudes. Modern biology, such as genomics, transcriptomics, proteomics, etc., significantly facilitates these studies and accelerates the acquisition of new knowledge. This allows for a more effective implementation of conservation measures and the renewal of forest ecosystems. This review contains information on the latest scientific achievements in the field of acclimatization and tolerance to abiotic stresses, such as cold and frost, of forest trees. There is no doubt that in the course of evolution forest trees developed a complex and dynamic mechanism for controlling the entry into the winter dormancy stage, which allows woody plants to successfully survive in cold and freezing conditions and is initiated long before the beginning of winter. Studying the function of individual genes in forest tree species, however, remains an incredibly difficult task due to large genomes, specific development as well as the lack of standard techniques and routine procedures. In recent years, similarities between the well-studied genetic response to low temperatures of the model plant Arabidopsis thaliana and forest trees have been identified, which produced meaningful analogies and allows for issues of functional genetics to be addressed more effectively. The main goal of this work was to show that findings from forest tree genomics can be effectively used as a tool for the reproduction and protection of important tree species through the identification of the predisposition of specific populations to climate change and their adaptive capacity.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90861529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Creative engineering – introducing the progress of science to forestry 创新工程——把科学的进步引入林业

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0026

T. Wodzicki

引用次数: 0

Mycobiota of juniper Juniperus x media with symptoms of dieback in sewage plant facilities area in Poznań 波兹纳齐污水厂厂区有枯死症状的刺柏菌群

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0024

J. Behnke-Borowczyk, H. Kwaśna, W. Szewczyk, J. Zatorski

{"title":"Mycobiota of juniper Juniperus x media with symptoms of dieback in sewage plant facilities area in Poznań","authors":"J. Behnke-Borowczyk, H. Kwaśna, W. Szewczyk, J. Zatorski","doi":"10.2478/frp-2019-0024","DOIUrl":"https://doi.org/10.2478/frp-2019-0024","url":null,"abstract":"Abstract The frequency and diversity of fungi in branches, roots and soil was examined in 3–10-years-old diseased Juniperus x media trees growing in the surroundings of the sewage treatment facility in Poznań. Symptoms of branch dieback appeared first on the older parts inside the crown and mostly in the lower part of trees subsequently spreading upwards and outwards. Our analyses included extraction of environmental rDNA from branches, roots and soil, amplification of the rDNA with fungi specific primers and sequencing. Fungal taxa from Ascomycota, Basidiomycota, Chytridiomycota, Glomeromycota and Zygomycota were detected with a total of 695, 135 and 196 taxa in branches, roots and soil, respectively. Fungal communities included plant pathogens, opportunistic pathogens, epiphytes or endophytes, mycorrhizal taxa, saprotrophs common on organic debris and in soil, human and animal pathogens, entomopathogenic taxa, mycoparasites, white and black yeasts, taxa with antagonistic and medicinal properties and lichenized fungi. The frequency of potential plant pathogens was 2.64–33.12% in branches, 0.88% in roots and 1.29–2.93% in soil. The most common pathogens were species from Chalara, Cytospora, Fusarium, Ilyonectria, Mycosphaerella, Setomelanomma (Ascomycota) and Armillaria, Rhizoctonia (Basidiomycota) genera. The less frequent pathogens included species from Leptosphaeria, Lophodermium and Septoria genera. In conclusion, oxygen deficiency and the presence of poisonous gases in the air around the sewage plant is likely to have had damaging effects on plants infected or colonized by opportunistic and facultative parasites.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81618046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Forest management practices and the occurrence of suspended solids in rivers and streams and their influence on ichthyofauna and river ecosystems 森林管理做法和河流和溪流中悬浮固体的出现及其对鱼类和河流生态系统的影响

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0027

T. Mikołajczyk, P. Nawrocki

引用次数: 3

Forest Protection in the European Union 欧盟的森林保护

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-12-01 DOI: 10.2478/frp-2019-0025

Adriana Kalicka-Mikołajczyk

{"title":"Forest Protection in the European Union","authors":"Adriana Kalicka-Mikołajczyk","doi":"10.2478/frp-2019-0025","DOIUrl":"https://doi.org/10.2478/frp-2019-0025","url":null,"abstract":"Abstract An estimated 5% of the world’s forests are located in the EU and these forests have continuously expanded for over 60 years, although recently at a lower rate. Forests and other wooded land now cover 155 million hectares and 21 million hectares, respectively, together more than 42% of the EU land area. Although the treaties in the European Union contain no provisions for a common forest policy, there is a long history of EU measures supporting forest and forest-related activities coordinate dwith member states, mainly through the Standing Forestry Committee. For several decades now, environmental forest functions have attracted increasing attention mostly in relation to the protection of biodiversity and, more recently, in the context of climate change. The main objective of this paper was twofold: first, to identify the EU legislation directly and indirectly connected to forest protection, and second, to determine its legal character and effectiveness. In conclusion, in recent years the EU has adopted numerous regulations that are directly and indirectly connected to forests and they can be divided into two groups: internal and international acts. Moreover, we can distinguish legally binding acts such as regulations, directives as well as international agreements and soft law acts including strategies, green books, communications, action plans or declarations.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73311527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regeneration of Scots pine Pinus sylvestris L. in the Carpathians depends on site fertility 喀尔巴阡山脉苏格兰松(Pinus sylvestris L.)的再生取决于场地肥力

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-09-01 DOI: 10.2478/frp-2019-0017

S. Ambroży, Mariusz Kapsa

{"title":"Regeneration of Scots pine Pinus sylvestris L. in the Carpathians depends on site fertility","authors":"S. Ambroży, Mariusz Kapsa","doi":"10.2478/frp-2019-0017","DOIUrl":"https://doi.org/10.2478/frp-2019-0017","url":null,"abstract":"Abstract The aim of this work was to determine the biometric features of Scots pine Pinus sylvestris L. regeneration in terms of their susceptibility to weather-inflicted damage. We compared the damage between three sites located in the Polish part of the Carpathians: Scots pine planted in (I) fertile sites of mountain broadleaved and mixed broadleaved forest, (II) poor sites of mountain coniferous forest and (III) sites of Scots pine natural refuges during the post-glacial period. In each of the three sites of pine regeneration, 11 research plots were established with 50 pine trees on each plot. For each tree, the following biometric measurements were taken: diameter at breast height, height, 3-year height increment, crown length and crown width measured along the contour line. The Scots pine regeneration was found to vary in terms of their biometric features depending on the site fertility. In fertile sites, the biometric parameters of the trees increased at a faster rate compared to low-fertility sites causing an increase in their susceptibility to damage by adverse weather conditions such as snow and rime. Therefore, the silvicultural risk in fertile sites is high and thus the introduction of pine for regeneration should be avoided in fertile broadleaved and mixed broadleaved forests even if pine provenances from a mountain origin are to be planted. Furthermore, tending cuts in regeneration should be made frequently, but with moderate intensity so as to avoid excessive reductions in tree density. Intensive cuts, especially in fertile sites, promote the expansion of pine crowns, which further increases the risk of damage.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75079228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Determination of conversion factors for pine and spruce logs in stacks 堆中松木和云杉原木换算系数的测定

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-09-01 DOI: 10.2478/frp-2019-0016

K. Jodłowski, J. Witkowska

{"title":"Determination of conversion factors for pine and spruce logs in stacks","authors":"K. Jodłowski, J. Witkowska","doi":"10.2478/frp-2019-0016","DOIUrl":"https://doi.org/10.2478/frp-2019-0016","url":null,"abstract":"Abstract The aim of this article was to determine the conversion factors for stacked pine and spruce logs with a length of 3–6 m. To this end, we measured stacks and their logs of a total of 3322.12 steres of pine logs and 1468.46 steres of spruce logs. The conversion factors obtained in this work for pine logs of varying lengths negatively correlate with log length. However, statistically significant (p<0.05) differences were only observed between the longest logs as well as logs of 3 and 4 m in length. This may be due to various factors (mainly curvature, the presence of buttresses on butt logs and taper) influencing the stacking process of logs of increasing length. For logs with a length of 3, 4 and 5 m, the average value of the conversion factor increased with the log thickness class, although this dependence was not statistically significant. In the case of spruce raw material, the obtained conversion factors are similar to the values determined in previous studies. There was no significant correlation between the length of the log and its average diameter. A prerequisite for using conversion factors for large-sized logs is accurate stacking, where special attention should be paid to the parallel stacking of individual logs, aligning their front and back sides to be flush and forming the stack so that its top plane is parallel to the ground.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79811285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The first Polish provenance experiments with silver fir Abies alba Mill. 第一个波兰的种源实验用冷杉阿尔巴磨坊。

USDA Forest Service - Research Papers PNW-RP Pub Date : 2019-09-01 DOI: 10.2478/frp-2019-0018

S. Gunia, J. Łukaszewicz, H. Szeligowski

{"title":"The first Polish provenance experiments with silver fir Abies alba Mill.","authors":"S. Gunia, J. Łukaszewicz, H. Szeligowski","doi":"10.2478/frp-2019-0018","DOIUrl":"https://doi.org/10.2478/frp-2019-0018","url":null,"abstract":"Abstract Silver fir Abies alba Mill. provenance trials started in Poland a few years after Pavari (1951) proved that the origin of this tree species influences its genetic variability. Further confirmation came from provenance trials, which selected provenances for cultivation in Denmark and showed provenance-dependent genetic variability even within a relatively small area such as the Czech Republic. The Polish trial, started in 1960, compared 6 provenances from the West and Central Carpathian region (4 from Poland, 2 from Slovakia) and 3 from the Hercinic region (Czech Republic). The trial was established in the Experimental Forests of the Warsaw University of Life Sciences in Rogów, at the northern border of the natural silver fir range. Results from the nursery stage experiments proved the existence of latitudinal and altitudinal clines based on data for seed weight, height growth, number of terminal buds as well as bud and needle development. The Polish provenance ‘Stary Sącz’ and two Slovak provenances, ‘Čierný Váh’ and ‘Beňuš’, were early flushing, whereas the Polish provenance ‘Rogów’ behaved differently and was late flushing. Even at the nursery stage, the positive influence of tree selection on height growth and progeny characteristics of the two Czech provenances was evident. The Carpathian provenances were furthermore evaluated according to the index of cultivation and breeding: very good – ‘Rogów’; good ‘ŚPN (Świętokrzyski PN)’, ‘Stary Sącz’ and ‘Skarżysko’; poor – ‘Čierný Váh’ and ‘Beňuš’.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87231221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1