Báo cáo lâm nghiệp: "Plant community variability within potential natural vegetation units: a case study from the Bohemian Karst" docx

... SP/2d2/138/08. Plant community variability within potential natural vegetation units: a case study from the Bohemian Karst P. Š, K. P, P. U Silva Tarouca Research Institute for Landscape and Ornamental ... similarly broad distribution. DISCUSSION Actual vegetation based on the map of potential natural vegetation The stratification of this...

Ngày tải lên: 07/08/2014, 10:22

... right), the resulting vari- Table 2. Covariance parameters estimates along with standard errors, and the Pr Z value (one- or two-tailed area of the standard Gaussian density outside of the Z-value) ... with the traditional analysis of variance (ANOVA). e last decade of the 20 th century saw major improvements in the options available for the analysis of field trials. Exp...

Ngày tải lên: 07/08/2014, 03:22

... 2004). Table 2. Leaf area parameters, the average height of beech trees and the leaf area/height ratio Location Mean leaf (cm 2 ) Mean total leaf area (cm 2 ) Mean height (cm) Leaf area/height ratio Crown mean ... clearcut and lowest in the understory. is also corresponds to the ratio of the leaf area to the beech tree height in the case of the under-crown and in-gap v...

Ngày tải lên: 07/08/2014, 10:22

... measured as the angle formed between one half of the cut (i.e. radial) surface of each half-disc and a flat surface, against which the other half of the cut surface was held. The half-discs were then ... Accordingly, separate analyses were undertaken on data from each height category within sampling category. Trait least square means and 95% confidence intervals were esti- mated...

Ngày tải lên: 07/08/2014, 16:21

... Plateau (Meseta Norte), Central Range (Sistema Central), West Andalusia (Andaluc a Occidental) and Catalonia (Catalu a) . This will allow us to analyse the inter-regional variability in dominant ... fit the model to the total data set, while in C group, we will fit the model to the combined data from Central Range, Northern Plateau and Catalonia, and make an independent fit to...

Ngày tải lên: 08/08/2014, 01:21

... Poland (Kartuzy Forest District), in the newest outbreak area of I. duplicatus on Norway spruce (M. Szydlarski, personal communication). These infestations vary in time and place, but they are ... (Coleoptera: Scolytidae) na území Polska. Zpravodaj ochrany lesa, 5: 13–15. GRODZKI W., 2003. Zasięg występowania kornika zrosłozębnego Ips duplicatus C. R. Sahlb. (Col.: Scolyti- dae) w obsz...

Ngày tải lên: 07/08/2014, 03:22

... marks (or imagos and larvae) after barking the stem and branches, continuously in one-metre sections along the whole of the stem and branches. Developmental stage (larva, pupa, imago, abandoned ... degree of the assimilatory apparatus defolia- tion was classified as: – only in the last needle age class (I), – only in the last and in the last but one needle age class (I+II),...

Ngày tải lên: 07/08/2014, 03:22

... recommended for these stands are not very common and/or very general ones and therefore the detailed analysis of its growing capacity and required crown space was done. Our data suggests that the wild ... species was found. e stand 3 9A5 is located at 49°57'28''N latitude and 14°49'20''E longitude. e total number of 16 circular sample plots was chose...

Ngày tải lên: 07/08/2014, 03:22

... cover the winter season 2005/2006 was markedly above-average. On the contrary, the winter season 2006/2007 was mark- edly subnormal. Thus, the last evaluated winter 2007/2008 can be characterized ... than the open area and that they par- ticipated effectively in the prolongation of the period of spring runoff. In the Orlické hory Mts. at the Deštné field re- search station,...

Ngày tải lên: 07/08/2014, 04:20

... Republic 3 Department of Mathematical Analysis and Statistical Inference, The Institute of Statistical Mathematics, Tachikawa, Tokyo, Japan ABSTRACT: We propose a spatial aggregation method to solve an ... 273 Using the formulation above, we can allocate treatments over space without harvesting adjacent stands in the same period. Demonstrative case study We present an empirical...

Ngày tải lên: 07/08/2014, 10:21