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67篇 您的检索式:作者名="Thorsten K"
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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
2Overweight and obesity in hip and knee arthroplasty:Evaluation of 6078 cases显示文摘AIM: To evaluate a possible association between thevarious levels of obesity and peri-operative characteristics of the procedure in patients who underwent endoprosthetic joint replacement in hip and knee joints. METHODS: We hypothesized that obese patients were treated for later stage of osteoarthritis, that more conservative implants were used, and the intraand perioperative complications increased for such patients. We evaluated all patients with body mass index(BMI) ≥ 25 who were treated in our institution from January 2011 to September 2013 for a primary total hip arthroplasty(THA) or total knee arthroplasty(TKA). Patients were split up by the levels of obesity according to the classification of the World Health Organization. Average age at the time of primary arthroplasty, preoperative Harris Hip Score(HHS), Hospital for Special Surgery score(HSS), gender, type of implanted prosthesis, and intra-and postoperative complications were evaluated.RESULTS: Six thousand and seventy-eight patients with a BMI ≥ 25 were treated with a primary THA or TKA. Age decreased significantly(P < 0.001) by increasing obesity in both the THA and TKA. HHS and HSS were at significantly lower levels at the time of treatment in the super-obese population(P < 0.001). Distribution patterns of the type of endoprostheses used changed with an increasing BMI. Peri- and postoperative complications were similar in form and quantity to those of the normal population. CONCLUSION: Higher BMI leads to endoprosthetic treatment in younger age, which is carried out at significantly lower levels of preoperative joint function.Daniel Guenther Stefan Schmidl Till O Klatte Harald K Widhalm Mohamed Omar Christian Krettek Thorsten Gehrke Daniel Kendoff Carl Haasper 2015World Journal of Orthopedics2015,6,1:4
3Colloid and heavy metal transport at landfill sites in direct contact with groundwater显示文摘Thomas B Peter F Thorsten K 2006Water Research2006,40,14:1
4Current evidence for transurethral laser therapy of non-muscle invasive bladder cancer 显示文摘Mario W K Thorsten B Mathias W 2011World J Urol2011,29,4:1
5Cerebral air embolism after pleural streptokinase instillation显示文摘Thorsten K Ullrich J Rüdger S 2013Diving Hyperbaric Med2013,43,4:1
6In vitro experimental Zl1 At-anti-CD33 antibody therapy of leukaemia ceils overcomes cellular resistance seen in vivo against gemtuzumab ozogamicin显示文摘Thorsten P Zekiye K Doris K 2010Eu- ropean Journal of Nuclear Medicine and Molecu- lar Imaging2010,37,5:1
7A Harpin Binding Sitein Tobacco Plasma Membranes Mediates Activation of the Pathogcnesis- Related Gent HINI Independent of Extraccllular Calcium but DePendemon Mitogen Activated Protein Kinase Activity显示文摘Justin L Daniel F K Thorsten N 2001The Plant Cell2001,,13:1
8Structural Bonding Tape: An innovation in adhesive bonding显示文摘GREGG B JURGEN K PAUL L G THORSTEN N 1996Adhesives Age1996,,9:1
9Diagnostic accuracy of dual-source computed tomography in the diagnosis of coronary artery disease显示文摘Thorsten RC Nikolaou K Busch S 2007Invest Radiol2007,42,10:1
10FDG uptake in breast cancer: correlation with biological and clinical prognostic parameters显示文摘Andreas Buck Holger Schirrmeister Thorsten Kühn Changxian Shen Thomas Kalker J?rg Kotzerke Anja Dankerl Gerhard Glatting Sven Reske Torsten Mattfeldt 2002European Journal of Nuclear Medicine and Molecular Imaging2002,,10:1
11Expression of type IV collagen-ase correlates with the expression of vascular endothelial growth factor in primary non-small cell lung cancer显示文摘 Thorsten W Cornelius K 1997J Cancer Res Clin Oncol1997,123,5:1
12A CBP integrator complex mediates transcriptional activation and AP-1 inhibition by nuclear receptors显示文摘Yasutomi K Xu L Thorsten H 1996Cell1996,85,:1
13Diagnostic accuracy of dual-source computed tomography in the diagnosis of coronary artery disease显示文摘Thorsten RC Nikolaou K Busch S 2007Invest Radiol2007,42,10:1
14Engagement of Glycoprotein Ⅱb/Ⅲa (GP Ⅱb/Ⅲa) on Platelets Upregulates CD40L and Triggers CD40L-Dependent Matrix Degradation by Endothelial Cells显示文摘Andreas EM Thorsten K 2002Circulation2002,106,:1
15Electronic Word-of-mouth via Consumer-opinion Platforms: What Motivates Consumers to Articulate Themselves on the Internet显示文摘THORSTEN H T GWINNER K P WALSH G 2004Journal of Interactive Marketing2004,18,1:1
16Transoral thyroid and parathyroid surgery-development of a new transoral technique显示文摘Elias K Thorsten S Andreas G 2011Surgery2011,14,1:1
17Correlation of neuropathologic findings and phase-based MRI temperature maps in experimental laser-induced interstitial thermotherapy显示文摘Christian PS Thomas K Thorsten H 1998JMRI1998,8,:1
18Transoral thyroid and parathyroid surgery显示文摘Elias K Thorsten S Andreas G 2010Surgical Endoscopy2010,21,6:1
19Functional analysis of the glutathione S-transferase 3 From Onchocerca volvulus ( Ov-GST-3 ) : A parasite GST confers increased resistance to oxidative stress in Caenorhabditis elegans 显示文摘Andreas K Thorsten E V Sarah H C 2003Journal of Molecular Biology2003,325,:1
20Occurrence, sources, and fate of benzothiazoles in municipal wastewater treatment plants 显示文摘Achim K Martin J Thorsten R 2005Envi- ron Sci Techno12005,39,:1
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