|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | On 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 | 2017 | Journal of Plant Ecology2017，10，1： | 22 |
| 2 | Increased liver stiffness in alcoholic liver disease:Differentiating fibrosis from steatohepatitis显示文摘AIM:To test if inflammation also interferes with liver stiffness (LS) assessment in alcoholic liver disease (ALD) and to provide a clinical algorithm for reliable fibrosis assessment in ALD by FibroScan (FS).METHODS:We first performed sequential LS analysis before and after normalization of serum transaminases in a learning cohort of 50 patients with ALD admitted for alcohol detoxification. LS decreased in almost all patients within a mean observation interval of 5.3 d. Six patients (12%) would have been misdiagnosed with F3and F4 fibrosis but LS decreased below critical cut-off values of 8 and 12.5 kPa after normalization of trans-aminases. RESULTS:Of the serum transaminases,the decrease in LS correlated best with the decrease in glutamic oxaloacetic transaminase (GOT). No significant chang-es in LS were observed below GOT levels of 100 U/L. After establishing the association between LS and GOT levels,we applied the rule of GOT < 100 U/L for reliable LS assessment in a second validation cohort of 101 patients with histologically confi rmed ALD. By ex-cluding those patients with GOT > 100 U/L at the time of LS assessment from this cohort,the area under the receiver operating characteristic (AUROC) for cirrhosis detection by FS improved from 0.921 to 0.945 while specificity increased from 80% to 90% at a sensitivity of 96%. A similar AUROC could be obtained for lower F3 fibrosis stage if LS measurements were restricted to patients with GOT < 50 U/L. Histological grading of inflammation did not further improve the diagnostic accuracy of LS.CONCLUSION:Coexisting steatohepatitis markedly increases LS in patients with ALD independent of fibrosis stage. Postponing cirrhosis assessment by FS during alcohol withdrawal until GOT decreases to < 100 U/mL signif icantly improves the diagnostic accuracy. | Sebastian Mueller Gunda Millonig Lucie Sarovska Stefanie Friedrich Frank M Reimann Maria Pritsch Silke Eisele Felix Stickel Thomas Longerich Peter Schirmacher Helmut Karl Seitz | 2010 | World Journal of Gastroenterology2010，16，8： | 10 |
| 3 | Genetics of the quantitative Lp(a) lipoprotein trait显示文摘 | Gerd Utermann Hans Georg Kraft Hans Jürgen Menzel Thomas Hopferwieser Christoph Seitz | 1988 | Human Genetics1988，，1： | 2 |
| 4 | Endoscopic ultrasonography for assessment of the response to combined radiation therapy and chemotherapy in patients with esophageal cancer显示文摘 | Giovannini M Seitz JF Thomas P | 1997 | Endoscopy1997，29，： | 1 |
| 5 | Genetics of the quantitative Lp(a) lipoprotein trait显示文摘 | Gerd Utermann Hans Georg Kraft Hans Jürgen Menzel Thomas Hopferwieser Christoph Seitz | 1988 | Human Genetics1988，，1： | 1 |
| 6 | Enhan- cing the stability and solubility of the glucocorticoid receptor ligand-binding domain by high-throughput li- brary screening 显示文摘 | SEITZ T THOMA R SCHOCH G A | 2010 | Journal of Molecular Biology2010，403，： | 1 |
| 7 | Characterization of IκB kinases显示文摘 | Thanos Janosch Miriam Schellerer Thomas Seitz | 1996 | J Biol Chem1996，271，13： | 1 |
| 8 | An Improved Conversion of Hesperidin into Hesperetin Including Purity Determination by Gradient-elution, High-pressure Liquid Chromatography显示文摘 | THOMAS SEITZ C WINGARD JR R E | 1978 | J Agrie Food Chem1978，26，1： | 1 |
| 9 | Electronic sectorial ultrasound endoscopy in benign and malignant tumoral pathology of the stomach:results in 30 patients显示文摘 | Giovannini M Seitz JF Thomas P | 1993 | Gastroenterol Clin Biol1993，17，1： | 1 |
| 10 | Endoscopic ultrasonography for assessment of the response to combined radiation therapy and chemotherapy in patients with esophageal cancer显示文摘 | Giovannini M Seitz JF Thomas P | | 0，，01： | 1 |
| 11 | Evaluation of the transforming growth factor β1 codon 25 (Arg<ce:hsp sp='0.25'/>→<ce:hsp sp='0.25'/>Pro) polymorphism in alcoholic liver disease显示文摘 | Christoph H. ?sterreicher Juliane Halangk Thomas Berg Eleonora Patsenker Nils Homann Claus Hellerbrand Helmut K. Seitz Dennis Eurich Felix Stickel | 2008 | Cytokine2008，，1： | 1 |
| 12 | Ex vivo and in vivo investigations of the novel 1,470 nm diode laser for potential treatment of benign prostatic enlargement显示文摘 | Michael Seitz Robin Ruszat Thomas Bayer Derya Tilki Alexander Bachmann Christian Stief Ronald Sroka Oliver Reich | 2009 | Lasers in Medical Science2009，，3： | 1 |
| 13 | Ex vivo and in vivo investigations of the novel 1,470?nm diode laser for potential treatment of benign prostatic enlargement显示文摘 | Michael Seitz Robin Ruszat Thomas Bayer Derya Tilki Alexander Bachmann Christian Stief Ronald Sroka Oliver Reich | 2009 | Lasers in Medical Science2009，，3： | 1 |
| 14 | Consistent Atmospheric and Oceanic Excitation of the Earth's Free Polar Motion 显示文摘 | Seitz F Stuck J Thomas M | 2004 | Geophys J Int2004，157，： | 1 |
| 15 | Serotonin Regulation of Serotonin Uptake in RN46A Cells显示文摘 | Nina Koldzic-Zivanovic Patricia K. Seitz Kathryn A. Cunningham Mary L. Thomas Thomas K. Hughes | 2006 | Cellular and Molecular Neurobiology2006，，4： | 1 |
| 16 | Electronic sectorial ultrasound endoscopy in benign and malignant tumoral pathology of the stomach: results in 30 patients 显示文摘 | Giovannini M Seitz J Thomas P | 1993 | Gastroenterol Clin Bio11993，17，1： | 1 |
| 17 | Chromoendoscopy and Narrow-Band Imaging Compared With High-Resolution Magnification Endoscopy in Barrett’s Esophagus显示文摘 | Wouter Curvers Lubbertus Baak Ralf Kiesslich Arnoud Van Oijen Thomas Rabenstein Krish Ragunath Jean–Francois Rey Pieter Scholten Uwe Seitz Fiebo Ten Kate Paul Fockens Jacques Bergman | 2008 | Gastroenterology2008，，3： | 1 |
| 18 | Antiviral effects of pan-caspase inhibitors on the replication of coxsackievirus B3显示文摘 | Ulrike Martin Nadine Jarasch Matthias Nestler Alexander Rassmann Thomas Munder Simone Seitz Roland Zell Peter Wutzler Andreas Henke | 2007 | Apoptosis2007，，3： | 1 |
| 19 | Feasibility of preoperative and postoperative chemoradiotherapy in gastric adenocarcinoma. Two phase II studies done in parallel FFCD 0308显示文摘 | Pierre Michel Gilles Breysacher Fran?oise Mornex Jean Fran?ois Seitz Denis Pere-Verge Isabelle Martel-Lafay Roger Faroux Sophie Chapet Iradj Sobhani Denis Pezet Thomas Aparicio Suzanne Ngyen Bertrand Dousset Jean-Louis Jouve Emile Maillard | 2013 | European Journal of Cancer2013，，： | 1 |
| 20 | Ex vivo and in vivo investigations of the novel 1,470nm diode laser for potential treatment of benign prostatic enlargement显示文摘 | Michael Seitz Robin Ruszat Thomas Bayer | 2009 | Lasers Med Sci2009，24，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员