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| 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 | Alcoholic liver disease and hepatitis C:A frequently underestimated combination显示文摘Alcoholic liver disease(ALD) and hepatitis C virus(HCV) infection represent, either alone or in combination, more than two thirds of all patients with liver disease in the Western world.This review discusses the epidemiology and combined impact of ALD and HCV on the progres sion of liver disease.ALD and HCV affect the progres sion of liver disease to liver cirrhosis and hepatocellular carcinoma(HCC) in a synergistic manner.Thus, the risk for HCC increases f ive times with a daily alcohol con sumption of 80 g;in the presence of HCV it is increased 20fold, and a combination of both risk factors leads to a more than 100fold risk for HCC development.Alcohol consumption also decreases the response to interferon treatment which is probably due to a lack of compliance than a direct effect on HCV replication.Several molecu lar mechanisms are discussed that could explain the synergistic interaction of alcohol and HCV on disease progression.They include modulation of the immune response and apoptosis, increased oxidative stress via induction of CYP2E1 and the hepatic accumulation of iron.Thus, both HCV and alcohol independently cause hepatic iron accumulation in > 50% of patients probably due to suppression of the liversecreted systemic iron hormone hepcidin.A better understanding of hepcidin regulation could help in developing novel therapeutic approaches to treat the chronic disease in the future.For now, it can be generally concluded that HCVinfect ed patients should abstain from alcohol and alcoholicsshould be encouraged to participate in detoxification programs. | Sebastian Mueller Gunda Millonig Helmut K Seitz | 2009 | World Journal of Gastroenterology2009，15，28： | 18 |
| 3 | Kontrastmittelsonografie bei B-Bild-morphologisch unklaren Leberraumforderungen – Diagnostische Treffsicherheit im klinischen Alltag (DEGUM-Multicenter – Studie)显示文摘 | D Strobel K Seitz W Blank A Schuler C Dietrich A Herbay M Friedrich-Rust G Kunze D Becker U Will W Kratzer F Albert C Pachmann K Dirks H Strunk C Greis T Bernatik | 2008 | Ultraschall in Med2008，，05： | 2 |
| 4 | Strong indication for a breast cancer susceptibility gene on chromosome 8p12-p22:linkage analysis in German breast cancer families显示文摘 | Seitz S Rohde K Bender E | 1997 | Oncogene1997，14，6： | 1 |
| 5 | Characterization of a hepati- tis B and hepatitis delta virus receptor binding site 显示文摘 | Engelke M Mills K Seitz S | 2006 | Hepatol- ogy2006，43，： | 1 |
| 6 | A theory of shape by space carving显示文摘 | S M Seitz | 2000 | International Journal of Computer Vision2000，38，3： | 1 |
| 7 | Effect of head orientation,on the diagnostic sensitivity of posturography in patients with compensated unilateral lesions显示文摘 | Barin K Seitz C Welling D | 1992 | Otolaryngol Head Neck Surgery1992，106，： | 1 |
| 8 | Suppression of Raf-1 kinase activity and MAP kinase signalling by RKIP显示文摘 | Yeung K Seitz T Li S | | 0，，6749： | 1 |
| 9 | A Comparison of the Tesseroid, Prism and Point-mass Approaches for Mass Reductions in Gravity Field Modelling显示文摘 | B Heck K Seitz | 2007 | Journal of Geodesy2007，81，2： | 1 |
| 10 | Suppression of Raf-1 kinase activity and MAP kinase signalling by RKIP 显示文摘 | Yeung K Seitz T Li S | 1999 | Nature1999，401，6749： | 1 |
| 11 | A theory of shape by space carving 显示文摘 | Kutulakos K N Seitz S M | 2000 | International Journal of Computer Vision2000，38，3： | 1 |
| 12 | A Theory of Shape by Space Carv- ing显示文摘 | Kutulakos K N Seitz S M | 2000 | Intemational Journal of Computer Vision2000，38，3： | 1 |
| 13 | Hepatitis induced by Kava (Piper methysticum rhizome)显示文摘 | Stichel F Baumuller H M Seitz K | 2003 | Hepatol2003，39，： | 1 |
| 14 | A Comparison of the Tesseroid, Prism and Point-mass Approaches for Mass Reductions in Gravity Field Modelling显示文摘 | Heck B Seitz K | 2007 | Journal of Geodesy2007，81，2： | 1 |
| 15 | Cardiac metastasis of a malignant fibrous histiocytoma occupying the right ventricle and infiltrating the myocardium显示文摘 | Wankmuller H Seitz K Seitz G | 1998 | Ultraschall Med1998，19，3： | 1 |
| 16 | Characterization of a hepatitis B and hepatitis delta virus receptor binding site显示文摘 | Engelke M Mills K Seitz S | 2006 | Hepatology2006，43，4： | 1 |
| 17 | Aetiology of anorexia nervosa: from a ' psychosomatic family model ' to a neuropsychiatric disorder? 显示文摘 | HERPERTZ- DAHLMANN B SEITZ J KONRAD K | 2011 | Eur Arch Psychiatry Clin Neurosci2011，261，2： | 1 |
| 18 | Enzymatically degradable poly(ethylene glycol) based hydrogels for adipose tissue engineering显示文摘 | Ferdinand P Brandl Anna K Seitz Jorg K V Tessmar | 2010 | Biomaterials2010，31，14： | 1 |
| 19 | Mental practice improves hand function after hemiparetic stroke显示文摘 | Mailer K Butefisch CM Seitz R J | 2007 | Restor Neurol Neurosci2007，25，： | 1 |
| 20 | Suppression of Raf-1 kinase activity and MAP kinase signalling by RKIP显示文摘 | Yeung K Seitz T Li S | 1999 | Nature1999，401，6749： | 1 |
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