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No generality in biodiversity-productivity relationships along elevation in temperate and subtropical forest landscapes

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Forest Ecosystems 2024年第3期11卷 255-265页

作者： Jiayun Zou Yahuang Luo Rupert seidl Dominik thom Jie Liu Lisa Geres Tobias Richter Linjiang Ye Wei Zheng Liangliang Ma Jie song Kun Xu Dezhu Li Lianming Gao sebastian seibold Ecosystem Dynamics and Forest Management Research Group School of Life SciencesTechnical University of MunichHans-Carl-von-Carlowitz-Platz 285354FreisingGermany state Key Laboratory of Plant Diversity and specialty Crops Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina Germplasm Bank of Wild species Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina Lijiang Forest Biodiversity National Observation and Research station Kunming Institute of BotanyChinese Academy of SciencesLijiang674100China Berchtesgaden National Park Doktorberg 683471Germany Gund Institute for Environment University of Vermont617 Main StreetBurlingtonVT 1105405USA Faculty of Biological sciences Institute for EcologyEvolution and DiversityConservation BiologyGoethe University FrankfurtFrankfurt am MainGermany University of Chinese Academy of sciences Beijing10049China TUD Dresden University of Technology Forest ZoologyPienner Str.701737TharandtGermany

An improved understanding of biodiversity-productivity relationships(BPRs)along environmental gradients is crucial for effective ecosystem management and biodiversity *** stress-gradient hypothesis suggests that BPRs are stronger in stressful environments compared to more favorable ***,there is limited knowledge regarding the variation of BPRs along elevational gradients and their generality across different *** study how BPRs change with elevation,we harnessed inventory data on 6,431 trees from152 plots surveyed twice in eight to ten year intervals in mountain forests of temperate Europe and subtropical *** quantified the relationship between aboveground productivity and different biodiversity measures,including taxonomic,functional,and phylogenetic *** elucidate the processes underlying BPRs,we studied the variation of different functional traits along elevation across *** found no general pattern of BPRs across landscapes and *** were neutral for all biodiversity measures in temperate forests,and negative for taxonomic and functional diversity in subtropical *** were largely congruent between taxonomic,functional and phylogenetic *** found only weak support for the stress-gradient hypothesis,with BPRs turning from negative to positive(effect not significant)close to the tree line in subtropical *** temperate forests,however,elevation patterns were strongly modulated by species identity effects as influenced by specific *** effect of traits such as community-weighted mean of maximum plant height and wood density on productivity was congruent across *** study highlights the context-dependence of BPRs across elevation gradients and *** traits are key modulating factors of BPRs and should be considered more explicitly in studies of the functional role of ***,our findings highlight that potential trade-offs be

关键词： Biodiversity-ecosystem functioning Climate mitigation Elevation gradients Forest management Forest productivity Functional traits Nature conservation Phylogenetic diversity

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Geoscience for the public： Geotopes and National GeoParks in Germany

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Episodes 2004年第4期27卷 279-283页

作者： Heinz-GerdRioehling Michaelschmidt-thomè LowersaxonyGeologicalsurveystilleweg2 D-30657Hartnover.Germany FederalInstitUteforGeoscienceandNaturalResources.stilleweg2 D-30657Hannover.Germany.

Geotopes or geological sites provide information on the evolution, structure and properties of the Earth's crust and on the geological past. They also represent the great variety of features that characterize a landscape, For this reason, their preservation is of special concern to geosciences. As early as in the 19th century, outstanding rock formations became important tourist sites although the modern terms ""geosites"" and ""geotourism"" were unknown. The paper describes the German initiatives on geotope conservation and the implementation of National GeoParks in Germany and their use for education and tourism.

关键词：地质公园德国演化信息地壳结构教育价值旅游产业

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Minor fibrillar collagens,variable regions alternative splicing,intrinsic disorder,and tyrosine sulfation

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Protein & Cell 2012年第6期3卷 419-433页

作者： Ming Fang Reed Jacob Owen McDougal Julia thom Oxford Department of Biological sciences Boise State UniversityBoiseID 83725USA Department of Chemistry and Biochemistry Boise State UniversityBoiseID 83725USA Biomolecular Research Center Boise State UniversityBoiseID 83725USA

Minor fibrillar collagen types V and XI,are those less abundant than the fibrillar collagen types I,II and *** alpha chains share a high degree of similarity with respect to protein sequence in all domains except the variable *** variation and,in some cases,extensive alternative splicing contribute to the unique sequence characteristics of the variable *** unique expression patterns in tissues exist,the functions and biological relevance of the variable regions have not been *** this review,we summarize the existing knowledge about expression patterns and biological functions of the collagen types V and XI alpha *** of biochemical similarities among the peptides encoded by each exon of the variable region suggests the potential for a shared *** alternative splicing,conservation of biochemical characteristics in light of low sequence conservation,and evidence for intrinsic disorder,suggest modulation of binding events between the surface of collagen fibrils and surrounding extracellular molecules as a shared function.

关键词： minor fibrillar collagens variable regions alternative splicing fibrillogenesis heparan sulfate binding sites intrinsic disorder tyrosine sulfation

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Finite element analysis of overlay incorporating stress absorbing membrane interlayers against reflective cracking

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Journal of Modern Transportation 2014年第2期22卷 104-111页

作者： O.M.Ogundipe N.H.thom A.C.Collop Civil Engineering Department Ekiti State University NTEC University of Nottingham Faculty of Technology De-Montfort University

A wheel tracking test was modelled to gain better understanding of the deflection and stress-strain distribution in an overlaid cracked pavements with and without membrane interlayer （sAMI）. For this purpose, commercial finite element software Abaqus 6.7-1 was used. Two different models were considered, one incorporating stress absorbing membrane interlayers （sAMIs） and the other without sAMI. In the study, full bond condition was assumed for the boundaries between the layers, and a linear elastic model was used for the analysis. The results show that introduction of sAMI caused greater deflection of the pavement. It is found that although with sAMIs, low stiffness is required, a very low stiffness may yield undesirable results. The results show that the introduction of sAMIs results in high strain concentration around the crack region, whilst the strain in the overlay is smaller than the values predicted in the models without sAMIs.

关键词： Overlay Interlayers Crack - strain stress

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The Central Axis of Beijing and Chinese Wisdom

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China Today 2023年第1期72卷 42-45页

作者： LARs ULRIK thom Beijing Postcards

A foreigner’s probe into the cultural connotations and origins of the Central Axis of *** pioneering journalist Eliza scidmore,National Geographic’s first official female writer,photographer,and board member,visited... 详细信息

关键词： Axis Central journal

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Le reflet de la sagesse chinoise

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今日中国（法文版） 2022年第8期60卷 34-36页

作者： LARs ULRIK thom Beijing Postcards

Eliza scidmore,une journaliste du National Geographie,avait visité Beijing en *** n'avait pas tari d’éloges sur 20 pages pour présenter Beijing sous tous les *** que j'ai trouvé curieux,c'est que nulle part ell... 详细信息

关键词： let journal pour

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Improving cover and management factor (C-factor) estimation using remote sensing approaches for tropical regions

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International soil and Water Conservation Research 2019年第4期7卷 325-334页

作者： André Almagro Thais Caregnatto thomé Carina Barbosa Colman Rodrigo Bahia Pereira José Marcato Junior Dulce Buchala Bicca Rodrigues Paulo Tarso sanches Oliveira Federal University of Mato Grosso do sul CxP 549 Campo Grande MS 79070-900 Brazil

The Revised Universal soil Loss Equation (RUsLE)'s cover and management factor (C-factor) is one of the most difficult factors to obtain,mainly because long-term monitoring soil erosion plots under natural rainfall are ***,remote sensing approaches have been used as an alternative for obtaining this ***,there is a lack of studies comparing values of this factor computed from remote sensing approaches with measured *** this study,we compare two widely used remote sensing approaches (CrA and CVK) to estimate the C-factor based on the Normalized Difference Vegetation Index (NDVI) with the literature (CLIT) and field experimental data..We also investigated the influence of C-factor methods on the prediction of soil loss and sediment yield (sY) using measured data in the Guariroba basin,Central-West *** obtained mean C-factor values of 0.032,0.023 and 0.137 for CLIT,CrA and CVK,*** found an average annual soil loss of 2.20 tha-1 yr-1,2.02 t ha-1 yr-1 and 10.07 tha-1 yr-1 and sY values of 6875 tyr-1,6468 tyr-1 and 33,435 t yr1,for CLIT,CrA and CVK *** results indicated a significant improvement in soil loss and sY estimations by using the CrA approach developed for tropical regions,with a bias of 13% to the measured sY (5709tyr-1).We conclude that the CrA method present the most suitable alternative to compute soil loss and sY in tropical ***,this approach allows large-scale evaluation and temporal monitoring,therefore enhancing multi spatial and temporal assessment of soil erosion processes.

关键词： soil erosion RUsLE NDVI Landsat 8 Land use/land cover

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线性菲涅尔太阳能集热器技术的分析、优化与创新

线性菲涅尔太阳能集热器技术的分析、优化与创新

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作者： thom Bouttier 上海交通大学

学位级别：硕士

太阳能是目前发现的可再生能源中应用最广泛的一种。太阳能热利用是实现大规模、低成本利用太阳能不可缺少的途径之一。为了更好地优化太阳能热利用设备,本文将研究一种线性菲涅尔式太阳能集热器。首先,本文重点介绍了这种三自由度的机... 详细信息

太阳能是目前发现的可再生能源中应用最广泛的一种。太阳能热利用是实现大规模、低成本利用太阳能不可缺少的途径之一。为了更好地优化太阳能热利用设备,本文将研究一种线性菲涅尔式太阳能集热器。首先,本文重点介绍了这种三自由度的机械系统。为实现系统的全方位优化,提出并讨论了多种工艺方案。这一系统的创新为线性菲涅尔式集热器技术的未来打开了一扇大门。为了完成这项研究,本文进行了相关光学分析,分析了几何参数以及光学性能等设计参数的影响。利用蒙特卡罗模拟方法,完成了光学性能的理论研究。对影响光学性能的相关因素进行了分析优化。结果显示,在给定工况下,最佳的光学效率可以达到80.2%。之后,本文建立了能量平衡方程,分析了影响该集热器热效率的主要因素,从而进一步优化。利用传热定律进行理论分析。为了准确地知道系统任意点在不同工况下的状态变量,本文利用CFD对系统的热性能进行分析和预测。最后确定了最佳的工作参数来优化系统的功能。并且绘制了系统的热损失图,以观察不同工作温度下系统的热力性能。

关键词：线性菲涅耳收集器光学优化热性能机械创新

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Cannabinoids drive Th17 cell differentiation in patients with rheumatic autoimmune diseases

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Cellular & Molecular Immunology 2021年第3期18卷 764-766页

作者： Konstantin Kotschenreuther Iris Waque shuaifeng Yan Anja Meyer thom Haak Julia von Tresckow Joanna schiller Lydia Gloyer Mara Dittrich-salamon David M.Kofler Laboratory of Molecular Immunology and Division of Clinical Immunology and Rheumatology University of CologneCologneGermany DepartmentⅠof Internal Medicine University of CologneCologneGermany

The legalization of cannabinoids for medical use has reinforced their emerging role as a treatment of chronic pain in patients with cancer or rheumatic diseases.1,2 In addition to their role as pain relievers,evidence obtained from animal models suggests that cannabinoids have immunosuppressive properties.3 However,a definite immunosuppressive function of cannabinoids has not yet been confirmed in clinical trials.

关键词： rheumatic Th17 patients

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标准岩心分析精度和重复性的统计分析

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油气田开发工程译丛 1990年第8期 21-27页

作者： thom.,DC 刘先德

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