Báo cáo khoa học: "Growth and fructification of a Norway spruce (Picea abies L Karst) forest ecosystem under changed nutrient and water input" doc

... article Growth and fructification of a Norway spruce (Picea abies L. Karst) forest ecosystem under changed nutrient and water input Achim Dohrenbusch a* , Stefan Jaehne a , Michael Bredemeier b and Norbert ... R.F. Nutrient balance and P, K, Ca, Mg, S and B accumulation in a Norway spruce stand following ammonium sulphate application, ferti...

Ngày tải lên: 08/08/2014, 14:20

... (weakened) older stands. e analyses indicate that the causes of the decline are as follows: planting of Norway spruce outside the optimum of its ecovalence, increased global radia- tion, weather ... this parameter in older trees (see the max. angle between HKK). All the analyzed stands exhibi- ted an intolerably high occurrence of tangles – always smallest in healthy trees...

Ngày tải lên: 07/08/2014, 03:22

... to the developed leaf area of the stand, as stated in equation [5]. Original article Water relations of adult Norway spruce (Picea abies (L) Karst) under soil drought in ... com- parison of mountain- and plain-growing Nor- way spruces was carried out); 2) to anal- yse and model the seasonal variation of canopy conductance under w...

Ngày tải lên: 08/08/2014, 19:21

... models is presently limited by the resolution (time and spatial scale) and the nature of available climatic and edaphic data (Nautiyal and Cuoto, 1984; Rayner and Turner, 1990). Consequently, ... Traditionally, these models are based on ’historical bioas- says’ and, therefore, are empirical models. Empirical models have been used over the past...

Ngày tải lên: 08/08/2014, 19:21

... of soil (Tables 2 and 3). e analyzed soils are shallow at high altitudes and moderately deep at lower altitudes, mostly medium- skeletal in their organic-mineral layers, and strongly or very ... while in two-years-old spruce needles the ratios S:Ca and N:Ca are disturbed in all the stand groups under analysis and in most cases also K:Ca. In the ratios S:Ca and S:Mg in...

Ngày tải lên: 07/08/2014, 10:21

... Disc Farad Soc 3, 146-153 Original article Water relations of adult Norway spruce (Picea abies (L) Karst) under soil drought in the Vosges mountains: whole-tree hydraulic conductance, ... stomatal adjust- ment to water transport capacity. Plant Cell Environ 13, 383-388 Meinzer FC, Grantz DA (1991) Coordination of stom- atal, hydraulic, and...

Ngày tải lên: 08/08/2014, 18:21

... Bohemian-Moravian Upland Plant condition Small-scale clear- felled areas Large-scale clear- felled areas Underplanting of Norway spruce Underplanting of white birch All plants Plants without damage ... terminal shoots All plants Plants without damage to terminal shoots All plants Plants without damage to terminal shoots All plants Plants without damage to terminal shoots e...

Ngày tải lên: 07/08/2014, 03:22

... equilibrium and velocity analytical ultracentrifugation Sedimentation equilibrium analytical ultracentrifugation was performed using a Beckman Optima XL -A analytical ultracentrifuge (Beckman Coulter ... could form a dodecamer and that Fig. 1. Apparent molecular mass of CDase I-5 at various pH values determined by analytical ultracentrifugation analysis. Dynamics of a CDase in...

Ngày tải lên: 07/03/2014, 12:20

... b-strand 3 and a- helix 3 of the barrel, and a C-terminal, domain C, folded as an antiparallel b-sheet [17–23]. Acarbose is a pseudotetrasaccharide inhibitor of a- amylase, that acts like a transition-state ... a- amylases. Materials and methods Materials Barley a- amylases, AMY1 and AMY2, were purified from green and kilned malt, respectively, according to Svensson et...

Ngày tải lên: 08/03/2014, 08:20

... (Table 2), Clostridium collagenase (clostridial collagenase family, M31), Php-C (thermolysin family, M4) and oligopeptidase A (OpdA; thimet oligopepti- dase family, M3), as well as trypsin and ... hydrolysis reactions as an internal standard, because it was not hydrolysed by PrtA. Peak areas were normalized with the internal standard, and the degree of cleavage was calculated from t...

Ngày tải lên: 23/03/2014, 09:20