Báo cáo lâm nghiệp: "Management criteria for Ficus insipida Willd. (Moraceae) in Amazonian white-water floodplain forests defined by tree-ring analysis" pptx

... traps give information influenced by mi- gration of beetles. CONCLUSIONS I. typographus remained dominant species on the majority of sites having high intensity of tree infes- tation mainly along ... understanding of bark beetles spatial distribution. It may be used for practical forest protection only as preliminary information. No environmental factor controlling observed...

Ngày tải lên: 07/08/2014, 03:22

... stand-forming capacity of wild cherry as well as its capacity to keep its position in a stand. MATERIAL AND METHODS A large stand with wild cherry trees as a stand- forming species in the area of Demonstration ... broadleaves such as Quercus robur, Quercus petraea, Tilia sp. and Carpinus betulus (P 2007). Growth of wild cherry (Prunus avium L...

Ngày tải lên: 07/08/2014, 03:22

... soils under broadleaved tree species but also to refer to the likely patterns in selected soil properties among different soil units in silver birch (Betula pubescens Ehrh.) stands. In addition ... variation in an evaluation of the nutrient pools of organic layers and the mineral soil in forest stands dominated by silver birch. CONCLUSIONS Referring to properties of s...

Ngày tải lên: 07/08/2014, 03:22

... the current results of the evaluation of the degree of the beech bark necrotic disease in selected localities in Southern Poland. Be- cause of the absence of analogical investigations in Poland, ... 2/7004/27. Current state of beech bark necrotic disease in Southern Poland A. C, I. M Institute of Forest Ecology of the Slovak Academy...

Ngày tải lên: 07/08/2014, 04:20

... primary productivity in ter- restrial ecosystems (J et al. 1999), N miner- Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China G. Q 1,2 , Q. ... is maintained at 20°C. For the given vegetation type of Changbai Mountain, soil C and N mineralization rate, potential mineralizable C (C 0 ) and potential ra...

Ngày tải lên: 07/08/2014, 10:21

... shedding light on the pro- cesses and trends of squared timber and log pro- duction and the relations between them in the Hyr- canian Forests of Iran during the last 20 years. MATERIALS AND METHODS Areas ... bordering the northern part of the Alborz Mountains and ex- tend from Astara in the west of Gilan Province to Giledarreh in the east of...

Ngày tải lên: 07/08/2014, 10:21

... Ann. For. Sci. 63 (2006) 537–546 537 c  INRA, EDP Sciences, 2006 DOI: 10.1051 /forest: 2006036 Original article High potential for increase in CO 2 flux from forest soil surface due to global warming ... as CO 2 sinks. A recent study shows that soil in England and Wales lost carbon at a mean rate of 0.6% y −1 from 1978 to 2003 according to soil inven...

Ngày tải lên: 07/08/2014, 16:20

... For. Sci. 63 (2006) 813–821 813 c  INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006080 Original article Genetic parameters for lignin, extractives and decay in Eucalyptus globulus Fiona S. P a * ,BradM.P  a ,RenéE.V a , ... Acid-soluble lignin con- tent showed significant variation for families and the highest Lignin, extractives and decay in...

Ngày tải lên: 07/08/2014, 16:20

... article Management criteria for Ficus insipida Willd. (M oraceae) in Amazonian white-water floodplain forests defined by tree-ring analysis Jochen Sch ă ongart a,c * ,FlorianW ittmann a,c , Martin Worbes b , ... gradients in white-water forests across the Amazon Basin, J. Biogeogr. 33 (2006) 1334–1347. [39] Worbes M., Growth rings, increment and age of trees i...

Ngày tải lên: 07/08/2014, 16:21

... expected change in distribution of within-ring density for one sd increase in ring width is presented in Figure 3. 3.4. Differences among clones in within-ring density Fluctuations in growth rate and within-ring ... relative contribution of clone differences to the overall variation in shape of within-ring frequency distributions of wood density....

Ngày tải lên: 08/08/2014, 00:21

... trees in Southern and Northern Tragamón. Oak pollarding in 1806 affected the southernmost extreme of South- ern Tragamón, and the north-central area of Northern Trag- amón. On the other hand, oaks ... 300–399 and 400–499 years) and the mean distance between target trees and their nearest neighbours was calcu- lated within, and between, age classes. The null...

Ngày tải lên: 08/08/2014, 00:21

... done to date, like those available in databases of taxa char- acteristics. 5. SELECTED CLUSTERING STRATEGY FOR MODELLING TROPICAL FOREST DYNAMICS Ecological strategies show a major drawback: once ... How to assign rare species with unreliable parameters or even missing data? (ii) How to extrapolate a species classifi- cation on a well documented forest to another forest...

Ngày tải lên: 08/08/2014, 00:22

... with/without adjustment. 9 Ann. For. Sci. 63 (2006) 914 â INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2005093 Original article A method for multiple intra-ring demarcation of coniferous trees Young-In ... http://www.edpsciences.org/forest or http://dx.doi.org/10.1051/forest:2005093 A method for multiple intra-ring demarcation 13 with increasing intra-ring positio...

Ngày tải lên: 08/08/2014, 00:22

... to the spec- tral variance is denoted by TT. 2.3. Non-linear mixed model of power spectra Visual inspections of truncated power spectra suggested the following non-linear relationship between the ... with the relative ease of modeling the trends in a power spectrum within a well-known statistical framework is perhaps the best feature of the proposed...

Ngày tải lên: 08/08/2014, 01:22

... this is the first data quality framework proposed for Mediterranean ecosystem management planning. Hopefully it will provide a basis for further studies on Mediterranean data quality and it will contribute ... of interfaces for data insertion Data insertion Data insertion in the information system Data transformation Development of data transformation algorithm...

Ngày tải lên: 08/08/2014, 01:22