Article
Geosciences, Multidisciplinary
Yanlei Feng, Robinson I. I. Negron-Juarez, John C. H. Chiang, Jeffrey Q. Q. Chambers
Summary: This study examines 38 cases of windthrows in the Amazonia and investigates the relationship between windthrows and the characteristics of mesoscale convective systems (MCSs) that caused them, including storm passing time, cloud top temperature, and maximum precipitation. The results show that windthrows mostly occur in August and September. The size of windthrows is positively correlated with the storm passing time. MCSs with colder cloud top temperatures (with a mean of 206K) result in larger windthrows, while those with warmer cloud tops (with a mean above 230K) result in relatively smaller windthrows, except in the western Amazonia. There is no significant relationship between maximum precipitation intensity and the area of windthrows.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Mechanical
Yanjuan Hu, Wenjun Lv, Zhanli Wang, Liang Liu, Hongliang Liu
Summary: This paper proposes a method of compensating for brake disc balance error by using a machine learning algorithm. The random forest model shows higher prediction accuracy in compensating for the errors during the calibration process, improving the balance accuracy.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Astronomy & Astrophysics
K. Grygorov, Z. Nemecek, J. Safrankova, J. Simunek, O. Gutynska
Summary: The magnetopause is usually seen as a boundary where the pressures of the solar wind and the geomagnetic field balance each other, neglecting the plasma pressure inside the magnetopause. However, studies have shown that there is an excess of pressure in the magnetosheath, and observations reveal that the magnetic field in the magnetosheath can be larger than in the magnetosphere. Additionally, the presence of a dense cold ion population affects the pressure balance and the rate of magnetic flux transport. These findings explain the contradiction observed in previous papers regarding the lack of magnetospheric pressure at the magnetopause.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2022)
Article
Economics
Paula Lopez-Vargas, Jazmin Gonzales Tovar, Reem Hajjar
Summary: This study examines the interaction between formal and informal timber management systems in the Peruvian Amazon, demonstrating the regulatory power of informal community rules in timber use and their impact on land rights, forest management, forest monitoring, and timber commercialization.
FOREST POLICY AND ECONOMICS
(2023)
Article
Forestry
Wim de Vries, Anjo de Jong, Johannes Kros, Joop Spijker
Summary: The use of tree harvest residues as feedstock for bioenergy has raised concerns about potential adverse effects on soil fertility, especially on poor sandy soils. Nutrient balance calculations suggest that depletion of certain nutrients is more likely to occur in poorer soils, highlighting the importance of considering soil type in forest biomass harvesting guidelines.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Forestry
Zhentian Ding, Biyong Ji, Hongwen Yao, Xuekun Cheng, Shuhong Yu, Xiaobo Sun, Shuhan Liu, Lin Xu, Yufeng Zhou, Yongjun Shi
Summary: This study utilized data from 773 permanent plots in Zhejiang Province, China, to identify key variables influencing forest mortality and construct mortality prediction models. The findings revealed that soil and stand-related factors had significant effects on mortality rate, while terrain and climate factors were not statistically significant. The Random Forest model showed the best fitting and prediction effect for mortality, using variables such as stand age, tree height, ADBH, crown cover, humus layer thickness, and the biodiversity index.
Article
Forestry
Nikolay Neykov, Stanislava Kristakova, Iveta Hajduchova, Mariana Sedliacikova, Petar Antov, Blanka Giertliova
Summary: This study focuses on comparing the forestry sectors in Bulgaria and Slovakia by evaluating the economic efficiency of selected state-owned forest enterprises. The results highlight the importance of improving forest management and increasing investments in research and development activities to achieve long-term sustainability and increased economic efficiency of forest enterprises in both countries.
Article
Forestry
Xuelu Liu, Jiejun Huang, Han Zhou, Jiaqi Sun, Qi Wang, Xuejun Cheng
Summary: Global climate change caused by greenhouse gas emissions has a direct impact on the sustainable development of human society and has gained widespread concern globally. Biological carbon sequestration measures, mainly forests, are conducive to improving the ecological carbon sink capacity and play an important role in mitigating global climate change. Therefore, assessing the efficiency of forest carbon storage (FCS) is key.
Article
Environmental Sciences
Laura E. Boeschoten, Mart Vlam, Ute Sass-Klaassen, Barbara Rocha Venancio Meyer-Sand, Ulfa Adzkia, Gael D. U. Bouka, Jannici C. U. Ciliane-Madikou, Nestor L. Engone Obiang, Mesly Guieshon-Engongoro, Joel J. Loumeto, Dieu-merci M. F. Mbika, Cynel G. Moundounga, Rita M. D. Ndangani, Dyana Ndiade Bourobou, Mohamad M. Rahman, Iskandar Z. Siregar, Steve N. Tassiamba, Martin T. Tchamba, Bijoux B. L. Toumba-Paka, Herman T. Zanguim, Pascaline T. Zemtsa, Pieter A. Zuidema
Summary: In order to reduce illegal timber trade effectively, law enforcers need forensic methods to verify claims of wood origin independently. This study evaluated the tracing accuracy of a multi-element analysis technique using Inductively Coupled Plasma Mass Spectrometry for three economically important tropical timbers. The results showed distinct spatial differences in chemical composition for all three timbers, and the tracing accuracy varied depending on the tracing question and geographical distance. The study demonstrated the high potential of multi-element analysis as a timber tracing tool, but the reference databases need to be improved to cover wider geographic areas and represent more timber species.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Erry Ika Rhofita, Ridwan Rachmat, Michel Meyer, Ludovic Montastruc
Summary: This paper discusses a method to assess the energy production from biomass residue in Indonesia, with statistical data and field observations used to estimate the total availability of residue and calculate energy potential. Different scenarios of conversion factor efficiency are analyzed to provide comprehensive results, showing the potential for biomass residue to cover a significant percentage of national energy consumption.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Studies
Natalia Girao Rodrigues de Mello, Hubert Gulinck, Pieter Van den Broeck, Constanza Parra
Summary: This study analyzes the impact of non-timber forest product (NTFP) activities on promoting sustainable land use in the Cerrado region of Brazil. The research finds that while these activities have positive effects on meeting material and socio-cultural needs, protecting and planting tree species, and sustainable harvesting techniques, power imbalances, inadequate local capacity, and agribusiness hegemony hinder their development. The study emphasizes the urgent need to address power asymmetry through land use policies and the importance of strengthening social relations to promote sustainable land use.
Article
Green & Sustainable Science & Technology
Mostafa Naemi, Dominic Davis, Michael J. Brear
Summary: This paper examines the optimal performance of a wind farm and integrated battery storage system in a wholesale electricity market, considering participation in both energy and FCAS markets as well as imperfect generation forecasting. It is found that advanced approaches to integration and control can provide significant financial benefits and improve the wind farm's ability to regulate its own power generation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Forestry
J. Uzu, P. Bettinger, J. Siry, B. Mei
Summary: This paper assesses the current state of forest business in West Africa, identifies limiting factors, and suggests possible solutions. The study finds that the majority of forest product trade in the sub-region involves unprocessed logs from natural forests, with plantation forests covering a small percentage of the focus countries' forest areas. Statistical models show that GDP per capita has a significant effect on wood production in the focus countries. The paper argues that as living standards improve, wood production is likely to increase, but the lack of robust financial and economic models may discourage private forest investments.
INTERNATIONAL FORESTRY REVIEW
(2022)
Article
Green & Sustainable Science & Technology
Kena Likassa Nefabas, Mengesha Mamo, Lennart Soeder
Summary: In this paper, an hourly dispatch model is developed to address the challenges of system balancing and wind power curtailment in the future Ethiopian electric power grid. The model is validated using historical data and applied to analyze the grid system in 2030 under different scenarios. It examines the effects of transmission capacity, regulation reserve requirement, and minimum daily hydropower generation for irrigation on wind energy integration with varying wind energy shares. The results show that wind power curtailment can be effectively minimized by reducing the minimum hydropower generation and increasing transmission line capacity.
Article
Forestry
Martin Nemec, Marcel Riedl, Vilem Jarsky, Roman Dudik
Summary: The demand for non-timber forest products, specifically game meat, has increased in the Czech Republic. However, the purchase prices of game have remained low despite the rising consumer prices of meat. This study analyzes the factors influencing consumer demand for game meat and proposes marketing strategies to increase its consumption.
Article
Forestry
Klaus Zimmermann, Tobias Schuetz, Holger Weimar, Matthias Dieter
Summary: The study explores the controls of coniferous timber stocks residence times in storage after severe storm events using forest accounting database. Factors such as market price dynamics, species groups, ownership categories and forest worker capacities were found to be significant controls for mean residence times of timber stock in storage. Stronger timber price falls were correlated with shorter mean residence times of timber stocks in storage, related to liquidity maintenance of forest enterprises.
EUROPEAN JOURNAL OF FOREST RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
S. Glasenapp, M. Fonseca, H. Weimar, P. Doring, F. X. Aguilar
Summary: Harmonization of wood energy data can improve data quality, inform policy-making better, and analyze feedstock competition. Conversion factors provided for weight and volume relative to forest energy products in EU28 member states revealed inconsistencies in residential wood energy consumption.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Economics
Franziska Schier, Christian Morland, Matthias Dieter, Holger Weimar
Summary: In this study, the market behavior of emerging forest products based on lignocellulose and their response to main economic drivers were investigated. The global market elasticities for dissolving pulp, cellulose-based chemical derivatives, and textile fibers were computed. Structural changes in the data were observed from 1992 to 2015, leading to the division of the timeline into three sub-periods for elasticity estimation. The price elasticities of dissolving pulp showed significant fluctuations over time, while the elasticities of cellulose-based derivatives and textile fibers did not exhibit a clear trend towards more elastic or inelastic coefficients.
FOREST POLICY AND ECONOMICS
(2021)
Article
Biotechnology & Applied Microbiology
Maria Riese, Tobias Schuetz, Marion Wacht, Klaus Fischer
Summary: A new method was developed to determine enzymatic parameters without biofilm disintegration, using beads made of different mineral materials in aquatic environments. Enzyme activities and kinetics were determined based on fluorometric detection of reaction products, with ceramic bead biofilms showing higher enzymatic activities and higher standard deviations compared to sintered glass bead biofilms.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Economics
Dominik Jochem, Matthias Boesch, Holger Weimar, Matthias Dieter
Summary: This study focuses on inconsistencies in data on recovered pulp production, developing national wood fiber balances for eleven countries to identify data gaps and errors. The results provide a basis for better understanding material flows in the pulp and paper sector and supplementing international statistics.
FOREST POLICY AND ECONOMICS
(2021)
Article
Green & Sustainable Science & Technology
Nora Szarka, Henryk Haufe, Nora Lange, Franziska Schier, Holger Weimar, Martin Banse, Viktoriya Sturm, Lara Dammer, Stephan Piotrowski, Daniela Thran
Summary: Germany emphasizes the development of the bioeconomy, especially in the sustainable management of renewable resources. This study calculated and described the biomass flows of production and use in the German bioeconomy in 2015, showing that agricultural biomass is mainly used for food and feed, biogenic residues and waste are mostly utilized by the energy sector, and forest-produced woody biomass is primarily used as solid fuel.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Environmental Sciences
Lara-Maria Schmitgen, Reinhard Bierl, Tobias Schuetz
Summary: The direction and depth of hyporheic exchange fluxes at the groundwater-surface water interface play a crucial role in influencing nutrient cycling and water quality. By analyzing temperature data, a significant relationship between hyporheic exchange fluxes and depths can be established.
WATER RESOURCES RESEARCH
(2021)
Article
Multidisciplinary Sciences
Malwina Schafft, Norman Wagner, Tobias Schuetz, Michael Veith
Summary: In this study, the larval fire salamanders were observed to exhibit downstream drift when exposed to unidirectional water flow. The probability of drift was influenced by body size and nutritional status, and simulated flood events significantly increased drift rates.
SCIENTIFIC REPORTS
(2022)
Article
Forestry
Franziska Schier, Susanne Iost, Bjoern Seintsch, Holger Weimar, Matthias Dieter
Summary: The EU Biodiversity Strategy aims to restore biodiversity by protecting nature in the European Union. Implementing the strategy will lead to a decrease in EU roundwood production and impact the production and trade of wood-based products. However, the apparent consumption of wood-based products remains stable. Globally, the EU roundwood production deficit is partly compensated by non-EU countries, but the remaining deficit is not produced and consumed.
Review
Environmental Sciences
Julia Tandetzki, Franziska Schier, Margret Koethke, Holger Weimar
Summary: Understanding the relationship between forest area development and socio-economic dynamics is crucial for forest conservation. Statistical models can provide valuable insights in analyzing this relationship. This study provides a systematic overview of two prominent concepts, the forest transition hypothesis (FTH) and the environmental Kuznets curve for deforestation (EKCd), and finds that the evidence base for EKCd is more comprehensive. Most studies focus on analyzing data from developing countries. The statistical analysis of these concepts does not provide a unified picture, highlighting the need for further research on different interpretations and approaches.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Matthias Boesch, Hermann Englert, Holger Weimar, Matthias Dieter
Summary: This study presents a novel physical accounting model that allows flows of wood-based products to be traced along international supply chains, making it possible to consistently relate the consumption of wood-based products to the origin of roundwood.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Water Resources
Hadis Mohajerani, Mathias Jackel, Zoe Salm, Tobias Schuetz, Markus C. Casper
Summary: The aim of this study was to simulate dominant runoff generation processes in a mesoscale catchment in southwestern Germany and compare them with a data-mining-based digital soil map. The physically-based distributed hydrological model WaSiM-ETH was used, with parameterization using 11 Pedo-transfer functions and synthetic rainfall events. The simulated patterns of runoff generation showed high variability due to land use, rainfall rates, and the use of different Pedo-transfer functions.
Article
Forestry
Ulrike Saal, Susanne Iost, Holger Weimar
Summary: Waste reduction, recycling, and increased material efficiency are important goals in industrial ecology, and the wood processing industry is also focused on intensive resource recovery. This study presents an approach for calculating the supply of wood processing residues, using a material flow analysis methodology and product-specific conversion factors. The calculated supply of wood processing residues in the European Union in 2018 was 29.7 million m(3)f, with a total material input of 70.8 million m(3)f and a production volume of 40.8 million m(3)f. The quantification of wood processing residues improves the accuracy and level of detail in existing and future wood resource balances.
TREES FORESTS AND PEOPLE
(2022)
Article
Geosciences, Multidisciplinary
Axel Schaffitel, Tobias Schuetz, Markus Weiler
Summary: Water fluxes at the soil-atmosphere interface play a crucial role in understanding the terrestrial water cycle. Utilizing soil moisture measurements for data-driven approaches is a simple and effective method to derive water fluxes directly.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
