IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.C08.02

N. Janzen, H. Weimar

{"title":"Market coverage of the EUTR - what share of wood imports into the EU is covered by the EUTR?","authors":"N. Janzen, H. Weimar","doi":"10.12841/WOOD.1644-3985.C08.02","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.C08.02","url":null,"abstract":"Illegal Logging is one of the major global causes of deforestation and degradation of forests. To combat the negative effects of illegal logging, the European Union (EU) introduced various forest related policies and measures. Among them is the EU Timber Regulation (EUTR). The objective of the presented analysis is to identify the percentage share that the EUTR applies to wood and wood-based products. We analysed the imports into the EU by using different reference units: the import value in Euro, the roundwood equivalent and the wood fibre equivalent. Our results show that about 90% of the imported quantities and 74% of the imported values are covered by the EUTR. This means, that in 2013 the EU imported a total wood quantity of 6 million m³ wood fibre equivalents (or 17 million m³ roundwood equivalents, respectively) which is not covered by the EUTR. This amount is almost equally distributed between wood products and paper products. Coverage ratios for further differentiated product groups differ. Typically, raw materials have a higher coverage ratio, and finished products have a lower coverage ratio. The wood quantities that are not covered by the EUTR are highly concentrated between a few commodities like wood charcoal, other articles of wood, recovered paper, printed books and brochures.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66331370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Alkaline sulphite anthraquinone pulping of caucasian spruce (Picea orientalis L.) chips with added sodium borohydride and ethanol 添加硼氢化钠和乙醇的高加索云杉片碱性亚硫酸盐蒽醌制浆研究

IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.067.07

E. Eri̇şi̇r, E. Gümüşkaya, H. Kirci, N. Misir

{"title":"Alkaline sulphite anthraquinone pulping of caucasian spruce (Picea orientalis L.) chips with added sodium borohydride and ethanol","authors":"E. Eri̇şi̇r, E. Gümüşkaya, H. Kirci, N. Misir","doi":"10.12841/WOOD.1644-3985.067.07","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.067.07","url":null,"abstract":"The study determined and compared the yield, viscosity, and chemical and physical properties of the pulps obtained as a result of Alkaline Sulfite–Anthraquinone (AS-AQ) pulping of Caucasian spruce wood with and without the addition of sodium borohydride (ASAB process) and ethanol (ASAE). It was found that the addition of ethanol to the AS-AQ pulping had a favourable influence on the screened yield and kappa number of the pulps. The addition of NaBH4 to the AS-AQ pulping in general also had a favourable influence on these pulps’ indices, provided that the amount added was not higher than 1–2% and the time of pulping was 180 mins. The higher yield of the ASAE pulps resulted from the higher retention of both cellulose and hemicelluloses, while the higher yield of ASAB pulps resulted from the higher retention of hemicelluloses and lignin. Regarding the AS-AQ pulping conditions, a distinct negative effect of modification on the viscosity of the pulps was observed in the case of the NaBH4 a additions to this pulping process. The viscosity reduction was, however, lower with extended pulping time. The static strength properties (tensile index and burst index) of the ASAB and ASAE pulps were in general lower than the AS-AQ pulps. In the case of the tear index, the tendency was similar. The addition of ethanol and especially NaBH4 to the AS-AQ pulping had a distinctly unfavourable influence on the whiteness and brightness of the pulps.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66328913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Pollutant concentrations from two-stage thermal conversion of pine wood logs in a 25 kW boiler with fixed air supply. 25 kW固定送风锅炉中松木两段热转化污染物浓度。

IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.083.09

M. Juszczak

引用次数: 0

Protection through construction of a wooden monument in Radomlje (Slovenia) 通过在拉多姆利耶(斯洛文尼亚)建造木制纪念碑进行保护

IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.117.12

R. Pamić, F. Pohleven

引用次数: 9

WOOD-BASED PANELS FOR LAND TRANSPORT USES 陆地运输用人造板

IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.125.11

C. Cremonini, F. Negro, R. Zanuttini

引用次数: 4

APPROXIMATE NUMERICAL MODEL FOR ADHESIVE SCARF JOINTS IN WOODEN BEAMS 木梁胶结缝的近似数值模型

IF 0.8 4区农林科学

Drewno Pub Date : 2015-01-01 DOI: 10.12841/WOOD.1644-3985.087.01

Piotr Rapp, Sławomir Fiszer

引用次数: 8

THE SYNERGISTIC EFFECT OF BORIC ACID AND AMMONIUM POLYPHOSPHATE ON THE THERMAL DEGRADATION AND FLAMMABILITY OF PINE-NEEDLES 硼酸和聚磷酸铵对松针热降解和可燃性的协同作用

IF 0.8 4区农林科学

Drewno Pub Date : 2014-01-01 DOI: 10.12841/WOOD.1644-3985.068.02

L. Li, H. Hu, C. Guo

引用次数: 1

Bioenergy innovations and their determinants: a negative binominal count data analysis 生物能源创新及其决定因素:负二项计数数据分析

IF 0.8 4区农林科学

Drewno Pub Date : 2014-01-01 DOI: 10.12841/WOOD.1644-3985.S08.03

Johan Brolund, R. Lundmark

引用次数: 9

GRAMMAGE AND STRUCTURAL DENSITY AS QUALITY INDEXES OF PACKAGING GRADE PAPER MANUFACTURED FROM RECYCLED PULP 用再生纸浆生产包装级纸的质量指标克重和结构密度

IF 0.8 4区农林科学

Drewno Pub Date : 2014-01-01 DOI: 10.12841/WOOD.1644-3985.053.11

S. Adamopoulos, C. Passialis, E. Voulgaridis, J. V. O. Villanueva

引用次数: 10

ESTIMATES AND FORECASTS OF FOREST BIOMASS AND CARBON SEQUESTRATION IN NORTH AMERICA AND AUSTRALIA: A FORTY-FIVE YEAR QUEST 北美和澳大利亚森林生物量和碳固存的估计和预测:45年的探索

IF 0.8 4区农林科学

Drewno Pub Date : 2014-01-01 DOI: 10.12841/WOOD.1644-3985.S05.01

D. Botkin, M. Ngugi, D. Doley

{"title":"ESTIMATES AND FORECASTS OF FOREST BIOMASS AND CARBON SEQUESTRATION IN NORTH AMERICA AND AUSTRALIA: A FORTY-FIVE YEAR QUEST","authors":"D. Botkin, M. Ngugi, D. Doley","doi":"10.12841/WOOD.1644-3985.S05.01","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.S05.01","url":null,"abstract":"A half-century of forest inventory research involving statistically-valid field measurements (using statistically representative sample size and showing confiden ce limits) and well-validated forecasting methods are reviewed in this paper. Some current procedures overestimate global and large-scale forest biomass, carbon storage, and carbon sequestering rates because they are based on statistically-invalid methods (errors in estimates are unavailable and unreported), or they fail to consider key dynamic characteristics of forests. It is sometimes assumed that old-growth forests can serve as fixed, steady-state storage of biomass and carbon for indefinitely long periods, but it is shown by both modelling and remote sensing that forests are dynamic systems, the state of which can change considerably over as short a time as a decade. Forecasting methods show that maximum biomass and carbon storage in some important forest types occurs in mid-succession, not in old-growth. It is proposed, therefore, that realistic biomass and carbon storage estimates used for carbon credits and offsets be determined as the statistical mean minus the confidence interval and that practical carbon sequestering programs include specific timeframes, not indefinitely long periods of time.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66331147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Drewno最新文献