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1On the combined effect of soil fertility and topography on tree growth in subtropical forest ecosystems—a study from SE China显示文摘Aims The aim of our research was to understand small-scale effects of topography and soil fertility on tree growth in a forest biodiversity and ecosystem functioning(BEF)experiment in subtropical SE China.Methods Geomorphometric terrain analyses were carried out at a spatial resolution of 5×5 m.Soil samples of different depth increments and data on tree height were collected from a total of 566 plots(667 m2 each).The soils were analyzed for carbon(soil organic carbon[SOC]),nitrogen,acidity,cation exchange capacity(CEC),exchangeable cations and base saturation as soil fertility attributes.All plots were classified into geomorphological units.Analyses of variance and linear regressions were applied to all terrain,soil fertility and tree growth attributes.Important Findings In general,young and shallow soils and relatively small differences in stable soil properties suggest that soil erosion has truncated the soils to a large extent over the whole area of the experiment.This explains the concurrently increasing CEC and SOC stocks downslope,in hollows and in valleys.However,colluvial,carbon-rich sediments are missing widely due to the convexity of the footslopes caused by uplift and removal of eroded sediments by adjacent waterways.The results showed that soil fertility is mainly influenced by topography.Monte-Carlo flow accumulation(MCCA),curvature,slope and aspect significantly affected soil fertility.Furthermore,soil fertility was affected by the different geomorphological positions on the experimental sites with ridge and spur positions showing lower exchangeable base cation contents,especially potassium(K),due to leaching.This geomorphological effect of soil fertility is most pronounced in the topsoil and decreases when considering the subsoil down to 50 cm depth.Few soil fertility attributes affect tree height after 1-2 years of growth,among which C stocks proved to be most important while pH_(KCl)and CEC only played minor roles.Nevertheless,soil acidity and a high proportion of Al on the exchange complex affected tree height even after only 1-2 years growth.Hence,our study showed that forest nutrition is coupled to a recycling of litter nutrients,and does not only depend on subsequent supply of nutrients from the mineral soil.Besides soil fertility,topography affected tree height.We found that especially MCCA as indicator of water availability affected tree growth at small-scale,as well as aspect.Overall,our synthesis on the interrelation between fertility,topography and tree growth in a subtropical forest ecosystem in SE China showed that topographic heterogeneity lead to ecological gradients across geomorphological positions.In this respect,small-scale soil-plant interactions in a young forest can serve as a driver for the future development of vegetation and biodiversity control on soil fertility.In addition,it shows that terrain attributes should be accounted for in ecological research.Thomas Scholten Philipp Goebes Peter Kühn Steffen Seitz Thorsten Assmann Jürgen Bauhus Helge Bruelheide Francois Buscot Alexandra Erfmeier Markus Fischer Werner Härdtle Jin-Sheng He Keping Ma Pascal A.Niklaus Michael Scherer-Lorenzen Bernhard Schmid Xuezheng Shi Zhengshan Song Goddert von Oheimb Christian Wirth Tesfaye Wubet Karsten Schmidt 2017Journal of Plant Ecology2017,10,1:22
2Increased resistance of drought by Trichoderma harzianum fungal treatment correlates with increased secondary metabolites and proline content显示文摘Plant secondary metabolites play vital role in plant stress response. In this study we investigated whether root colonization of tomato(Solanum lycopersicum) infected by Trichoderma harzianum leads to alterations in the biosynthesis of secondary plant metabolites including phytohormones and osmolyte proline under drought stress. Exposure of tomato to drought caused a drastic decline in plant growth and physiological parameters. Tomato inoculated with T. harzianum showed increased root and shoot growth and chlorophyll pigments as compared to uninoculated controls as well as drought stressed plants. Proline and total soluble protein content was increased in plants inoculated with T. harzianum under both normal as well as drought conditions. An obvious increase in phenol and flavonoid content was observed due to T. harzianum. In addition, T. harzianum inoculated plants maintained higher levels of growth regulators indole acetic acid, indole butyric acid, and gibberellic acid under drought stress. Improved secondary metabolites which play an important role in plant stress tolerance by T. harzianum may have coordinately worked for bringing the growth regulation by protecting membranes from reactive oxygen species(ROS) and enhance plant growth through accessing more nutrients by root system.Mona S.Alwhibi Abeer Hashem Elsayed Fathi Abd_Allah Abdulaziz A.Alqarawi Dina Wafi K.Soliman Stephan Wirth Dilfuza Egamberdieva 2017Journal of Integrative Agriculture2017,16,8:15
3Current treatment options and response rates in children with chronic hepatitis C显示文摘Vertical transmission has become the most common mode of transmission of hepatitis C virus (HCV) in children.The rate of perinatal transmission from an HCVinfected mother to her child ranges from 2% to 5% and the prevalence of HCV in children in developed countries ranges between 0.1% and 0.4%.Spontaneous viral clearance seems to be dependent on the genotype and has been reported between 2.4%-25%.For chronically infected patients,treatment with recombinant polyethylene glycol (PEG)-interferon α-2b and daily ribavirin has now been approved as standard treatment for children 2-17 years of age.In five large prospective studies,a total of 318 children and adolescents aged 3-17 years were treated either with subcutaneous PEG-interferon α-2b at a dose of 1-1.5 μg/kg or 60 μg/m2 once a week in combination with oral ribavirin (15 mg/kg per day) or PEG-interferon α-2a with ribavirin.Subjects with genotype 1 and 4 received the medication for 48 wk and individuals with genotype 2 and 3 mainly for 24 wk.Overall sustained viral response (SVR) was achieved in 193/318 (60.7%) of treated patients.Stratified for genotype;120/234 (51%) with genotype 1,68/73 (93%) with genotype 2/3,and 6/11 (55%) with genotype 4 showed SVR.Relapse rate was between 7.7% and 17%.Overall,treatment was well tolerated;how-ever,notable side effects were present in approximately 20%.According to recent experiences in the treatment of chronic hepatitis C in children and adolescents,a combination of PEG-interferon α with ribavirin has been found to be well tolerated and highly efficacious,particularly in individuals with genotype 2/3.Thus,this treatment can be recommended as standard of care until more effective treatment options will become available for genotype 1 patients.Stefan Wirth 2012World Journal of Gastroenterology2012,18,2:6
4The effect of microclimate on wood decay is indirectly altered by tree species diversity in a litterbag study显示文摘Aims We studied the influence of tree species diversity on the dynamics of coarse wood decomposition in developing forest communities in a natural,topographically heterogeneous landscape.Using the litter bag technique,we investigated how and to which extent canopy tree species richness or the exclusion of mesoinvertebrates and macroinvertebrates affected wood decomposition in the light of natural variations in the microclimate.We compared the relative importance of the two aspects(experimental treatment versus microclimate)on wood decay rates using Schima superba as a standard litter.Methods Coarse woody debris(CWD)was deposited in litter bags with two different mesh sizes in a total of 134 plots along a gradient of canopy tree species richness(0-24 species).Wood decomposition was assessed at two consecutive time points,one and three years after deposition in the field.Local climatic conditions were assessed throughout the duration of the experiment.Microclimatic conditions were assessed both,directly in the field as well as indirectly via correlations with local topography.We used analysis of variance based approaches to assess the relative importance of the treatments(community tree species richness and macro invertebrate exclusion)and microclimatic conditions on wood decay.Important Findings No direct influence of tree species richness on wood decay could be detected.However,the exclusion of macroinvertebrates significantly decreased wood decomposition rates.In addition,microclimatic conditions accounted for a substantial proportion of explained variance in the observed data.Here,wood decomposition was negatively affected by low mean temperatures and high variations in local humidity and temperature.However,tree species richness as well as the respective species composition affected the presence of termites within forest communities.These,in turn,significantly increased the decay of CWD.The strength of both,experimental treatment and microclimate increased with ongoing decomposition.We conclude that,while tree species richness per se has no direct influence on wood decomposition,its influence on the local arthropod decomposer community(especially the presence of termites)does have an effect.David Eichenberg Katherina Pietsch Christian Meister Wenyong Ding Mingjian Yu Christian Wirth 2017Journal of Plant Ecology2017,10,1:5
5因特网与地理信息系统:互联地理信息系统显示文摘Bernd JUNG WIRTH 陶颖若 2000测绘通报2000,,4:4
6Cabozantinib in Progressive Medullary Thyroid Cancer显示文摘Rossella Elisei Martin J. Schlumberger Stefan P. Müller Patrick Sch?ffski Marcia S. Brose Manisha H. Shah Lisa Licitra Barbara Jarzab Viktor Medvedev Michael C. Kreissl Bruno Niederle Ezra E.W. Cohen Lori J. Wirth Haythem Ali Colin Hessel Yifah Yaron Doug 2013Journal of Clinical Oncology2013,,29:3
7In vivo corrosion of four magnesium alloys and the associated bone response显示文摘F. Witte V. Kaese H. Haferkamp E. Switzer A. Meyer-Lindenberg C.J. Wirth H. Windhagen 2004Biomaterials2004,,17:3
8Green infrastructure: a planning concept for the urban transformation of former coal-mining cities显示文摘Peter Wirth Jiang Chang Ralf-Uwe Syrbe Wolfgang Wende Tinghao Hu 2018International Journal of Coal Science & Technology2018,5,1:3
9乳化型香肠——持水性、脂肪结合和质地的形成显示文摘乳化型香肠基本上是由斩切得极细的肌肉组织(瘦肉)、脂肪组织和水组成。水中加入了盐类和调味料以产生颜色和风味,并在某种程度上稳定这种混和物。乳化型香肠可以由这种均一的基础肉馅组成,如里昂香肠、肉肠以及其它多种小香肠。Fritz Wirth 吕革 齐晓辉 1993肉类工业1993,,6:3
10Management of chronic hepatitis B in childhood: ESPGHAN clinical practice guidelines显示文摘Etienne M. Sokal Massimiliano Paganelli Stefan Wirth Piotr Socha Pietro Vajro Florence Lacaille Deirdre Kelly Giorgina Mieli-Vergani 2013Journal of Hepatology2013,,:3
11重量轻且成本低的陶瓷合金制动盘显示文摘在转向架其它零部件的重量有所减轻的同时,采用传统制动盘设计的零部件重量的比例却有了上升。一种先进的含有陶瓷成份的铝合金则提供了减轻制动盘重量和改善其性能仿机会。Xaver Wirth 于慧娟 1996国外机车车辆工艺1996,,2:2
12Transformed mammalian cells secrete specific proteins and phosphoproteins显示文摘Senger DR Wirth DF Hynes RO 0,,04:2
13Microbial activity in a sandy arable soil is governed by the fertilization regime显示文摘Timo Kautz Stephan Wirth Frank Ellmer 2004European Journal of Soil Biology2004,,2:2
14High sustained virologic response rates in children with chronic hepatitis C receiving peginterferon alfa-2b plus ribavirin显示文摘Stefan Wirth Carmen Ribes-Koninckx Maria Angeles Calzado Flavia Bortolotti Lucia Zancan Paloma Jara Mark Shelton Nanda Kerkar Marcela Galoppo Alejandra Pedreira Norberto Rodriguez-Baez Mirta Ciocca Alain Lachaux Florence Lacaille Thomas Lang Ulrike Kullme 2010Journal of Hepatology2010,,4:2
15Short-Term Response of Soil Respiration to Addition of Chars:Impact of Fermentation Post-Processing and Mineral Nitrogen显示文摘The biodegradability of chars derived from pyrolysis and hydrothermal carbonisation(HTC) was studied in short-term dynamic incubation experiments under controlled conditions. Carbon dioxide C(CO2) emissions from soil-char mixtures in combination with solid digestate or mineral nitrogen(N) fertiliser were measured in dynamic chambers for 10 d. Compared to the original material(maize straw), pyrolysis and HTC chars showed significantly lower CO2 emissions and slower decay dynamics; and compared to the soil control, HTC char increased soil respiration to a significant extent, while pyrolysis char did not. The addition of mineral N resulted in a delayed respiration dynamics for HTC char, while the addition of digestate resulted in an increase in the respired CO2 for pyrolysis char and a decrease for HTC char. For the first time, a peculiar two-stage decay kinetics was observed for HTC char,indicating a highly inhomogeneous substrate consisting at least of two C pools.Giacomo LANZA Stephan WIRTH Arthur GESSLER Jrgen KERN 2015Pedosphere2015,25,5:2
16ISOBAR制动闸片提高了盘形制动器的性能显示文摘德国铁路公司的ICE3高速列车与早期ICE列车的四个制动盘相比,它在每根轴上只装两个制动盘,使用一种改善了接触模式的先进制动闸片,可以降低噪声并使能量吸收能力提高了50%。XAVER WIRTH 林素贞 1998国外机车车辆工艺1998,,3:2
17Glutathione Peroxidase 4 Senses and Translates Oxidative Stress into 12/15-Lipoxygenase Dependent- and AIF-Mediated Cell Death显示文摘Alexander Seiler Manuela Schneider Heidi F?rster Stephan Roth Eva K. Wirth Carsten Culmsee Nikolaus Plesnila Elisabeth Kremmer Olof R?dmark Wolfgang Wurst Georg W. Bornkamm Ulrich Schweizer Marcus Conrad 2008Cell Metabolism2008,,3:2
18Prevalence of autoantibodies and the risk of autoimmune thyroid disease in children with chronic hepatitis C virus infection treated with interferon-α显示文摘AIM: To evaluate the prevalence of autoantibodies in chronic hepatitis C virus (HCV)-infected children focusing on thyroid autoimmunity. METHODS: We investigated the prevalence of auto- antibodies in 123 chronic HCV-infected children before, during and after monotherapy with interferon-alpha (IFN-α) or combined treatment with interferon-α or peginterferon-α and ribavirin. Besides antibodies against smooth muscle (SMA), nuclei (ANA), and liver/kidney microsomes (LKM), the incidence of anti- thyroid peroxidase antibodies as well as thyroid function parameters (TSH, FT3 and FT4) were determined. RESULTS: We found that 8% of children had autoantibodies before treatment. During treatment, 18% of children were found positive for at least one autoantibody; 15.5% of children developed pathologic thyroid values during IFN-α treatment compared to only one child before therapy. Six children had to be substituted while developing laboratory signs of hypothyroidism. CONCLUSION: Our data indicate a strong correlation between interferon-α treatment and autoimmune phenomena, notably the emergence of thyroid antibodies. The fact that some children required hormone replacement underlines the need of close monitoring in particularly those who respond to therapy and have to be treated for more than 6 mo.Stephan Gehring Ulrike Kullmer Sabine Koeppelmann Patrick Gerner Philip Wintermeyer Stefan Wirth 2006World Journal of Gastroenterology2006,12,36:2
19Small-bowel MRI in children and young adults with Crohn disease: retrospective head-to-head comparison of contrast-enhanced and diffusion-weighted MRI显示文摘Henning Neubauer Thomas Pabst Anke Dick Wolfram Machann Laura Evangelista Clemens Wirth Herbert K?stler Dietbert Hahn Meinrad Beer 2013Pediatric Radiology2013,,1:2
20Efficacy of Radiofrequency Ablation Combined With Endoscopic Resection for Barrett’s Esophagus With Early Neoplasia显示文摘Roos E. Pouw Katja Wirths Pierre Eisendrath Carine M. Sondermeijer Fiebo J. Ten Kate Paul Fockens Jacques Devière Horst Neuhaus Jacques J. Bergman 2010Clinical Gastroenterology and Hepatology2010,,:2
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