Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L ] Karst ) root system to changing humidity and temperature conditions of the sit" ppt

... 6215648902, and the Ministry of Agriculture of the Czech Republic, Project QG 60060. Response of the Norway spruce (Picea abies [L. ] Karst. ) root system to changing humidity and temperature conditions ... (anchors) at the place of measurement (in mm 2 ) to the length of the aboveground part of tree in cm. e greater th...

Ngày tải lên: 07/08/2014, 03:22

... decreased to below 50 kg at the beginning of the 1990s and today to just above 30 kg. In contrast, the total amount of nitrogen deposition, com - posed almost of equal amounts of ammonium (N-NH 4 ) and ... nitrogen and magnesium contribute one third and calcium a quarter to the total amount. 2.2. The spruce stand The spruce stand is the second gener...

Ngày tải lên: 08/08/2014, 14:20

... Norway spruce (Picea abies [L. ] Karst. ) in the regen- eration of existing Norway spruce stands, in the regeneration of large-area clearcuts, and in the reconstruction of the stands of substitute tree ... Agriculture of the Czech Republic, Project No. QG 60060. Current possibilities of using Norway spruce (Picea abies [L. ]...

Ngày tải lên: 07/08/2014, 03:22

... and the total hydraulic conductance from the soil to the leaves. It is therefore necessary to analyze the concurrent changes in Ψ soil , GL and Fto understand the ... higher in the trunk and the roots. This supposes that the vulnerability of these organs is comparable to that of the branch, which may not be the case...

Ngày tải lên: 08/08/2014, 18:21

... cm·s -1 . After the rain at the end of August and the beginning of September, and rehydration of the dry plot, the g s in both plots recov- ered to the pre-stress value. The decreases ... Over the period from days 165 to 285, the total sums of TM, Tw and Td were 252, 190 and 150 mm, respectively. Stomatal control of tree...

Ngày tải lên: 08/08/2014, 19:21

...  199 2). Norway spruce (Picea abies [L. ] Karst. ) is the main edificator and stand-forming tree species in mountain spruces stands of Central Europe. e timberline is running quite near the Praděd ... 199 8). Alternatively to CLU multi- variate analysis of variance (MANOVA) was applied. CLU and MANOVA were used to evaluate the close- ness of...

Ngày tải lên: 07/08/2014, 03:22

... MŁ S. (200 8): Stability of Norway spruce (Picea abies [L. ] Karst. ) stands in the Beskid Ś laśki and beskid Žywiecki Mts. from the aspect of their nutrition status.Journal of Forest Science, ... proportion of these elements in the assimilatory organs of Norway spruce. – High uptake of toxic elements (Al, S) is another factor negativel...

Ngày tải lên: 07/08/2014, 10:21

... regionalization of Poland (T et al. 199 0), the area of the present research is located in Carpathian Region Stability of Norway spruce (Picea abies [L. ] Karst. ) stands in the Beskid Śląski and ... study is to determine the stability of spruce stands in the areas of threat to forest stability in the light of the assessment...

Ngày tải lên: 07/08/2014, 10:21

... ways of nursery cultivation and sorting the planting material of mountain provenances of Norway spruce (Picea abies [L. ] Karst. ) are connected with the risk of undesirable narrowing of the genetic ... characteristics of four-years-old Norway spruce (Picea abies [L. ] Karst. ) plants used for planting or put into Jiffy pots (spr...

Ngày tải lên: 07/08/2014, 10:21

... 199 0). Comparison of morphological and physiological parameters of the planting material of Norway spruce (Picea abies [L. ] Karst. ) from intensive nursery technologies with current bareroot ... bareroot and container plants of Norway spruce (Picea abies [L. ] Karst. ). Based on the results of this experiment, there exist mar...

Ngày tải lên: 07/08/2014, 10:22