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50篇 您的检索式:作者名="WITTIG R"
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1Woody species composition,diversity and structure of riparian forests of four watercourses types in Burkina Faso显示文摘Riparian forests are classified as endangered ecosystems in general,particularly in sahelian countries like Burkina Faso because of human-induced alterations and civil engineering works.The modification of this important habitat is continuing,with little attention being paid to the ecological or human consequences of these changes.The objective of this study is to describe the variation of woody species diversity and dynamic in riparian forests on different type of watercourse banks along phytogeographical gradient in Burkina Faso.All woody species were systematically measured in 90 sample plots with sides of 50 m × 20 m.Density,dominance,frequency and species and family importance values were computed to characterize the species composition.Different diver-sity indices were calculated to examine the heterogeneity of riparian forests.A total of 196 species representing 139 genera and 51 families were recorded in the overall riparian forests.The species richness of individuals with dbh ≥ 5cm increased significantly from the North to the South along the phytogeographical gradient and varied significantly between the different types of riparian forests.Similarity in tree species composition between riparian forests was low,which indicates high beta diversity and reflects differences in habitat conditions and topography.The structural characteristics varied significantly along the phyto-geographical gradient and between the different types of riparian forests.The diameter class distribution of trees in all riparian forests showed a reverse 'J' shaped curve except riparian forest of stream indicating vegetation dominated by juvenile individuals.Considering the ecological importance of riparian forest,there is a need to delineate and classify them along watercourses throughout the country.Oumarou Sambaré Fidèle Bognounou Rüdiger Wittig Adjima Thiombiano 2011Journal of Forestry Research2011,22,2:2
2Impact of future climate and land use change on non-timber forest product provision in Benin,West Africa:Linking niche-based modeling with ecosystem service values显示文摘Heubes J Heubach K Schmidt M Wittig R Zizka G Nuppenau E A Hahn K 2012Economic Botany2012,66,4:1
3PTK787/ZK 222584, a speeific vascular endothelial growth factor-receptor tyrosine kinase inhibitor, affects the anatomy of the tumor vascular bed and the functional vascular properties as detected by dynamic enhanced magnetic resonance imaging显示文摘Drevs J Muller-Driver R Wittig C 2002Cancer Res2002,1562,14:1
4A quick method for assessingthe importance of open spaces in towns for urban nature con-servation显示文摘WITTIG R SCHREIBER K F 1983Biological Conservation1983,26,:1
5Gas turbine heat transfer: past and fu ture challenges显示文摘Schiele R Wittig S 2000Journal of Propulsion and Power2000,16,4:1
6Fabrication of Cu-Coated Ag Nanocrystals in Silica by Sequential Ion Implantation 显示文摘 Magruder III R H Wittig J E 2000NIM B2000,171,:1
7Reciprocal effects of platinum and Pb on the water household of poplar cuttings显示文摘Ballach H J Wittig G R 1996Environ- mental Science Pollution Research1996,3,:1
8“Vapor-liquid equilibria by UNIFAC group contribution, revision and extension”显示文摘Wittig R Lohmann J Gmehling J 0,,1:1
9A modified UNIFAC(Dortmund) model(Ⅳ):Revision and extension 显示文摘Gmehling J Wittig R Lohmann J Joh R 2002Industrial & Engineering Chemistry Research2002,41,6:1
10Glanders -a comprehensive review 显示文摘Wittig MB Wohlsein P Hagen R M etal 2006Dtsch Tierarztl Wochenschr2006,113,:1
11Efficacy and tolerability of myrtol standardized in long term treatment of chronic bronchitis显示文摘Meister R Wittig T Beuscher N 1999Drug Tesearch1999,,4:1
12Cardiac side effects of conven- tional and particle radiotherapy in cancer patients显示文摘Wittig A Engenhart-Cabillic R 2011Herz2011,36,4:1
13A Comparison of Software Effort Estimation Techniques Using Function Points with Neural Networks, Case Based Reasoning and Regression Models显示文摘Finnie G R Wittig G E Desharnais J-M 1997Journal of Systems Software1997,39,3:1
14Using Artificial Neural Networks and Function Points to Estimate 4GL Software Development Effort显示文摘G E Wittig G R Finnie 1994Australian Journal of Information Systems1994,1,2:1
15Reciprocal effects of platinum and lead on the water household of poplar cuttings显示文摘Ballach H J Wittig R 1996Envir Sei Pollut Res1996,3,1:1
16Recovery of alertness after CPAP in apnea显示文摘Lamphere J Roehrs T Wittig R 1989Chest1989,96,:1
17Simple and sensitive detection of mutations in the ras proto-oncogenes using PNA-mediated PCR clamping显示文摘Thiede C Bayerd(o)rffer E Blasczyk R Wittig B Neubauer A 1996Nucleic Acids Res1996,24,:1
18Efficacy and tolerability of myrtol standardized in long term treatment of chronic bronchitis 显示文摘Meister R Wittig T Beuscher N 1999Drug Research1999,,4:1
19Protein S-nitrosylation and denitrosylation in the mouse spinal cord upon injury of the sciatic nerve显示文摘Scheving R Wittig I Heide H 2012J Proteomics2012,75,13:1
20PTK787/ZK 222584,a specific vascular endothelial growth factor-receptor tyrosine kinase inhibitor,affects the anatomy of the tumor vascular bed and the functional vascular properties as detected by dynamic enhanced magnetic resonance imaging显示文摘Drevs J Muller-Driver R Wittig C 2002Cancer Res2002,62,14:1
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