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61篇 您的检索式:作者名="Lennartz"
    题名 作者 年代 出处 被引量
1Spatial Variability of Soil Properties and Rice Yield Along Two Catenas in Southeast China显示文摘In the light of an increasing demand for staple food, especially rice, in southeast China, investigations on the specific site potential expressed as the relationship between soil and crop yield parameters gain increasing importance. Soil texture and several soil chemical parameters as well as plant properties such as crop height, biomass and grain yield were investigated along two terraced catenas with contrasting soil textures cropped with wet rice. We were aiming at identifying correlative relationships between soil and crop properties. Data were analyzed both statistically and geostatistically on the basis of semivariograms. Statistical analysis indicated a significant influence of the relief position on the spatial distribution of soil texture, total carbon and total nitrogen contents. Significant correlations were found for the catena located in a sandstone area (Catena A) between rice yield and silt as well as total nitrogen content. Corresponding relationships were not detectable for paddy fields that developed from Quaternary clays (Catena B). As suggested by the nugget to sill ratio, spatial variability of soil texture, total carbon and nitrogen was mainly controlled by intrinsic factors, which might be attributed to the erosional transport of fine soil constituents, indicating the importance of the relief position and slope in soil development even in landscapes that are terraced. The crop parameters exhibited short ranges of influence and about one third of their variability was unexplained. Comparable ranges of selected crop and soil parameters, found only for Catena A, are indicative of close spatial interactions between rice yield and soil features. Our findings show that especially in sandstone-dominated areas, a site-specific management can contribute to an environmentally safe rice production increase.B. RTH B. LENNARTZ 2008Pedosphere2008,18,4:8
2植物在修复、固定和重建水生、陆生生态系统中的应用显示文摘植物能够吸收或降解污染物来修复受污染的土壤和水体[1-2],还能固定土壤、泥沙防止侵蚀和污染物从固体介质中释放[3]。众多无机和有机污染物都能被对其有耐性且生物量大的植物有效降解。例如,凤眼莲能吸收和净化来自金矿采掘废水的氰化物,这类废水含各种氰化物以及重金属元素的浓度达到导致生物体产生毒性效应的水平。检测表明氰化物对凤眼莲的半数致死剂量(LC50)为13 mg/L,将经过高浓度氰化物废水驯化后的凤眼莲放在野外小型湿地进行试验,结果显示这类植物对氰化物的降解效率更高。放射性同位素试验发现氰化物分子中的C和N原子经过植物代谢合成天冬酰胺,从而将有毒性的氰化物转化为无毒的产物[4]。尾矿场也可以用植物来修复,一方面植物可以过滤污染物浓度很高的渗滤液,另一方面栽种植物可以固定边坡减少侵蚀。将高覆盖度植被的概念应用在一个尾矿场上,通过种植北美黄杉使其全年都维持较高的蒸腾效率来减少渗滤液。而边坡的固定首先需要在坡面安置固定、菱形的新鲜柳条编织成的笼状网格,其后覆上土壤并喷播能在生长期对固定土壤发挥作用的草本、灌木以及树木种子。这项技术同样适用于河岸侵蚀防护。Andreas SCHAEFFER 陈忠礼 Mathias EBEL Michael EVANGELOU Henner HOLLERT Martina RO-NICKOLL Burkhard SCHMIDT 袁野 Gottfried LENNARTZ 2012重庆师范大学学报(自然科学版)2012,29,3:4
3Evaluating non-equilibrium solute transport in small soil columns显示文摘Kamra S K Lennartz B Van Genuchten M Th 2001Journal of Contaminant Hydrology2001,48,:1
4Bromide Transport at a Tile-drained Field Site: Experiment, and One- and Two-dimensional Equilibrium and Non-equilib- rium Numerical Modeling 显示文摘KOHNE S LENNARTZ B KOHNE J M 2006Journal of Hydrology2006,321,14:1
5Superoxide production at phagosomal cup/phagosome through beta I protein kinase C during Fc gamma R-mediated phagocytosis in microglia显示文摘Ueyama T Lennartz MR Noda Y 2004J Immunol2004,173,:1
6Pharmacikinetcs of ceftriaxone in patients undergoing continuous veno-venous haemofiltration 显示文摘KROH UF LENNARTZ H EDWARDS D 1996J Clin Pharmacol1996,36,12:1
7Water losses through paddy bonds: methods, experimental data, and simulation studies显示文摘Janssen M Lennartz B 2009Journal of Hydrology2009,369,12:1
8Time variance a- nalysis of preferential solute movement at a tile-drained field site 显示文摘Lennartz B Michaelsen J Widmoser P 1999Soil Science Society of America Journal1999,63,1:1
9Pharmacokinetics of ceftriaxone in patients undergoing continuous veno-venous hemofiltration显示文摘Kroh UF Lennartz H Edwards D 1996J Clin Pharmacol1996,36,12:1
10Simulation of phosphorus losses from lysimeters显示文摘Godlinski F Reiche EW Lennartz B Meissner R 2008Journal of Plant Nutrition and Soil Science2008,171,4:1
11Minitabletting: improving the compactability of paracetamol powder mixtures 显示文摘Mielck JB Lennartz P 1998Int J Pharm1998,173,12:1
12Cyanide adlayers on Pt( 111 ) in chloride containing electrolytes studied by in situ, ex situ IRAS and LEED 显示文摘Lennartz M Arenz M Stuhlmann C Wandelt K 2000Surface Science2000,461,13:1
13Water losses through paddy bunds: methods, experimental data, and simulation studies 显示文摘Janssen M Lennartz B 2009Journal of Hy- drology2009,369,1:1
14The presence and significance of the Thomsen-Friedenreich antigen in mammary gland显示文摘P. J. Klein R. A. Newman P. Müller G. Uhlenbruck P. Citoler H. E. Schaefer K. J. Lennartz R. Fischer 1979Journal of Cancer Research and Clinical Oncology1979,,2:1
15HCF153, a novel nuclear-encoded factor necessary during a post-translational step in biogenesis of the cytochrome b6f complex显示文摘Lennartz K Bossmann S Westhoff P 2006The Plant Journal2006,45,:1
16Evaluating non-equilibrium solute transport in small soil columns显示文摘KAMRA S K LENNARTZ B Van GENUCHTEN M T 2001Journal of Contaminant Hydrology2001,48,34:1
17Water through paddy bunds: Methods, experimental data, and simulation studies显示文摘Janssen M Lennartz B 2009Journal of Hydrology2009,369,12:1
18Analyses of soil water content variations and GPR attribute distributions显示文摘SCHMALZ B LENNARTZ B WACHSMUTH D 2002Journal of Hydrology2002,267,:1
19,Evaluation Non-Equilibrium Solute Transport in Small Soil Columns显示文摘Kamra S K Lennartz B Van Genuchten M Th 2001Journal of Contaminant Hydrology2001,48,:1
20Phospholipases and phagocytosis: The role of phospholipid derived second messengers in phagocytosis显示文摘Lennartz M R 1914Int J Biochem Cell Biol1914,31,34:1
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