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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 | Size effects on residual stress and fatigue crack growth in friction stir welded 2195-T8 aluminium – Part I: Experiments显示文摘 | Yu E. Ma P. Staron T. Fischer P.E. Irving | 2011 | International Journal of Fatigue2011，，11： | 2 |
| 3 | Diagnostic accuracy of whole-body MRI/DWI image fusion for detection of malignant tumours:a comparison with PET/CT显示文摘 | Fischer MA Nanz D Hany T | | 0，，02： | 1 |
| 4 | Primary medication non-adherence:analysis of 195,930electronic prescriptions显示文摘 | Fischer MA Stedman MR Lii J | 2010 | Journal of General Internal Medicine2010，25，4： | 1 |
| 5 | Solitary fibrous tumors of the pleura显示文摘 | de Perrot M Fischer S Brundler MA | 2002 | Ann Thorac Surg2002，74，1： | 1 |
| 6 | Prevalence of abnormal sperm DNA denaturation in fertile and infertile men显示文摘 | Zini A Fischer MA Sharir S | 2002 | Urology2002，60，6： | 1 |
| 7 | Intracranial hemodynamics in sle ep apnea显示文摘 | Fischer AQ Chaudhary BA Taormina MA | 1992 | Chest1992，102，： | 1 |
| 8 | Implanon: a new contraceptive implant 显示文摘 | Fischer MA | 2008 | J Obstet Gynecol Neonatal Nurs2008，37，3： | 1 |
| 9 | Mutation in HBVRNA dependent DNA polymerase confers resistance to lamivudine in vivo显示文摘 | Tipples GA Ma MM Fischer KP | 1996 | Hepatology1996，24，3： | 1 |
| 10 | Nitric oxide and oral diseases: can we talk about it显示文摘 | de S~ Siqueira MA Fischer RG da Silva Figueredo CM | 2010 | Cardiovasc Hematol Agents Med Chem2010，8，2： | 1 |
| 11 | Diagnosis of near - fatal pulmonary embolus - in - transit with focused eehoear- diography显示文摘 | Fischer Jl Huis in't Veld MA Orland M | 2013 | J Emerg Med2013，45，2： | 1 |
| 12 | Discussion of medical errors in morbidity and mortality eonferences显示文摘 | Pierluissi E Fischer MA Campbell AR | 2003 | JAMA2003，290，21： | 1 |
| 13 | IL-6 activates HSP72 gene expression in human skeletal muscle显示文摘 | Febbraio MA Steensberg A Fischer CP | | 0，，05： | 1 |
| 14 | Gli2 and MEF2C activate each other's expression and function synergistically duringcardiomyogenesis in vitro显示文摘 | Voronova A A1 MA Fischer A | 2012 | Nucleic Acids Res2012，40，8： | 1 |
| 15 | Diagnostic accuracy of whole-bodyMRI/DWI image fusion for detection of malignant tumours: A comparison with PET/CT显示文摘 | Fischer MA Nanz D Hany T | 2011 | European Journal of Radiology2011，21，2： | 1 |
| 16 | Solitary fibrous tumors of the pleura显示文摘 | de Perrot M Fischer S Briandler MA | 2002 | Ann Thor Surg2002，74，1： | 1 |
| 17 | Nutritional rickets around the world:Causes and future directions显示文摘 | Thacher TD Fischer PR Strand MA | 2006 | Ann Trop Paediatr2006，26，1： | 1 |
| 18 | Prevalence of abnormal sperm DNA denaturation in fertile and infertile men显示文摘 | Zini A Fischer MA Sharir S | 2002 | Urology2002，60，6： | 1 |
| 19 | New vitals after injury: Shock index for the young and age × shock index for the old 显示文摘 | Zarzaur BL Croce MA Fischer PE | 2008 | J Surg Res2008，147，2： | 1 |
| 20 | Prevalence of abnormal sperm DNA denaturation in fertile and infertile men显示文摘 | Zini A Fischer MA Sharir S | 2002 | Urology2002，60，6： | 1 |
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