Báo cáo lâm nghiệp: "Evaluation of twenty-years-old pedunculate and sessile oak provenance tria" doc

... prov-enances of sessile oak: 11 Křivoklát (6.36 m) and 31 Bučovice (6.62 m) and of pedunculate oak: 12 Křivoklát (6.72 m) and 45 Strážnice (6.76 m). e type of branching of sessile oak is character-ized ... stem shape evaluation document that ﬁ ve provenances of sessile oak and four prov-enances of pedunculate oak had the highest propor-tion of straight stems. For the majority of the prov-enances ... individual provenance plots are given in Tables 8 and 9. e comparison of total mean heights of both oak species showed that pedunculate oak grows faster than sessile oak with the exception of Plasy...

Báo cáo lâm nghiệp: "Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock" docx

... diﬀerences).RESULTSComparison of the growth of parent trees and clones of the 1st and 2nd generationResearch plots were evaluated in the intervals of several years. So data acquired in plantations of dif-ferent ... Journal of Forest Research, 22: 335–361.J B. (1999): Stand establishment and early growth of planted Pinus sylvestris and Picea abies related to microsite conditions. Scandinavian Journal of ... inﬂu-ence of transplant shock and of the clone growth by site conditions interaction. But the results conﬁrm a possibility of using the spruce clone stock and in situ selection for the selection of...

Báo cáo lâm nghiệp: "Evaluation of squared timber and log products in the Hyrcanian Forests of Iran" doc

... 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 METHODSAreas under ... wood and charcoal (Table 2). Fig. 1. Study site locationSupported by the Ministry of Education, Youth and Sport of the Czech Republic, Project No. MSM 6215648902, and by the Ministry of Agriculture ... Tehran, Forest and Range Organization of Iran: 43–45.K M. (2007):  e study of import and exports of timbers from the Iranian ports. [MSc.  esis.] Tehran, University of Tehran: 120–123.H...

Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx

... properties of a landscape. Any changes in the landscape structure (in space and time) change the course of energy-material ﬂows in the landscape, aﬀect the permeability and habitability of the land-scape, ... the existence of diverse landscapes? Fenina, 178: 55–80.W T. (1998): Landscape structure as indicators for sustainable land use? A case study in alpine and lowland landscapes of Austria. ... of land use further fragment agriculture and forest land and in-crease its separation eﬀect.L (2000) stated that overall changes in the landscape, and especially in the manner of land...

Báo cáo lâm nghiệp: "Evaluation of physiological and health state of Norway spruce plants with diﬀerent growth rate at juvenile stage after outplanting at" pdf

... spruce trees. The results document good preconditions for the establishment of vital and stable stands when the entire growth spectrum of planting stock and particularly of plants produced from ... traits of young spruces with known growth rate in a nursery and after outplanting are carried out in the framework of the grant project “Conservation of the stability and biodiversity of Norway ... aspect of higher competi-tiveness and enhancement of short-term chances of plant establishment. However, fast growth and large size imply lower investments in defence, lower wood density and...

Báo cáo lâm nghiệp: "Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis)" pps

... the smallest possible diameter in the stand and thus it should be between 0 and the mini-Table 1. Descriptive statistics of stand and tree variablesStand variable (86 plots)Tree variable (n ... Weibull distribution and compar-ing their performances with the MLE and MOM. The objective of this research is to assess and compare the accuracy of the above three estimators of two-parameter ... aspect of estimated performance, the LSM and the MLE of ﬁtting Weibull function were also good methods because the methods are easy and quick estimates well as there exists a lot of software...

Báo cáo lâm nghiệp: "Evaluation of a semi-empirical model for predicting ﬁne root biomass in compositionally complex woodland vegetation" ppsx

... of ﬁne* Corresponding author: cha@lwf.uni-muenchen.deroots is a key component of understanding the productivity and functioning of forest and woodland ecosystems.Traditionally, estimates of ... improve terrestrial ecosystemmodels and their estimates of carbon cycling [11]. Thus, theobjective of this work was to evaluate the suitability of themodel of Ammer and Wagner [2] for predicting ... inventory and rootsampling are fully detailed in Zerihun et al. [25]. Brieﬂy, the mean an-nual rainfall and temperature at the xeric and mesic sites are 367 mm and 19.5◦C, and 1103 mm and 22.1◦C,...

Báo cáo lâm nghiệp: "Evaluation of competition and light estimation indices for predicting diameter growth in mature boreal mixed forests" pdf

... growth of a subject tree of a given species is assumed to vary as a powerfunction of the size of the neighbour, and as an inverse power func-tion of the distance to the neighbour. The net eﬀect of ... distance-independent (basalarea of competitors) and the best distance-dependent (CRWD)index are provided in Tables IV and V and Figures 3 and 4.The combination of basal area and transmissive-crown PARindices ... presence of Viburnumedule and have a mesic moisture class and medium nutrient class.BMe and LFf ecosites are subhygric and rich. The former is char-acterized by Cornus stolonifera and the latter...

Báo cáo lâm nghiệp: "Evaluation of new silvicultural alternatives for Scots pine stands in northern Spain" pot

... preservation of biodiversity and thelandscape, etc., are the lengthening of the rotation, retention of part of the trees in final cutting and, to a lesser extent, the thin-ning regime and the level of ... retention of a portion of the stand in the finalcutting, and the extension of rotation to fulfill these non-timber producing objectives in the other case. The results for one stand of Pinussylvestris ... instead of continuing withtraditional management implies to trade off 75% of the LEVfor an increase in the final volume and veneer volume of 10% and 4%, respectively. Despite the financial cost of...

Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt

... (%)SpeciesRatio of the number of dead trees to the number of living treesRatio of the volume of dead trees to the volume of living treesRatio of the number of recruited trees to the number of trees ... direction of changes taking place in biomass of the ecosystem in the layer of trees, and this is why it is taken into account in determination of stages and phases of development of the forest of ... 1.4% of actual stand volume determined in 1997) being in the optimum stage, phase of aging and regeneration, and the smallest one stand of Gródek (5.3 m3/ha/year, i.e. 0.9% of actual stand...

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