Báo cáo lâm nghiệp: "Assessment of the assortment potential of the growing stock – a photogrammetry based approach for an automatized grading of sample trees" potx

... thresholds. For the administration and supply of the assortment criteria for the grading routine, a databaseapplication thar-QDB (Tharandt Quality Data Base) was de-veloped as subject-matter of a diploma ... visualization and exem-plary monetary evaluation of grading alternatives for sample trees and thus can be employed for training to support an im-proved understanding of the value potential of the ... subsequent monetary eval-uation and optimization (“best alternative”) and can be actual-ized in case of changing assortment criteria by a reclassiﬁca-tion of the sample trees. Thar-QDB oﬀers the option...

Báo cáo lâm nghiệp: "Assessment of some forest characteristics employing ikonos satellite data" docx

... 2pNIR+ 1– (2pNIR+1)2 –8 (pNIR–pRED)MSAVI = – – – – – – – – – – – – – – – – (2) 2Vegetation indices also allow compensation for changing light conditions, surface slope, exposition and other ... values indicate both the status and abundance of green vegetation cover and biomass, e.g. the Corrected Transformed Vegetation Index (CTVI): (NDVI + 0.5) – – – – – – – – CTVI = – – – – – – – ... satellite data from a mountain forest area of Central Slovakia. Original digital data as well as enhanced digital images were used to estimate some forest variables. Image enhancement approaches...

Báo cáo lâm nghiệp: "Forest watershed runoff changes determined using the unit hydrograph method" pps

... area – approximately 1/6 of the area is drained). Š (1992) also reported fast discharge from large pores within the drainage-treated area. Subse-quently, an adjacent non-drained area ... describing rainfall-runoﬀ ratios for both vegetation and dormant seasons and for hydrological years. The change of trend that was found in vegetation seasons in 1996 and 2002 helped determine the ... acting as a hydraulic barrier. Many natural springs near tec-tonic faults were also found (Š 2003). Average annual precipitation is 1,350 mm, average annual air temperature is 4.4°C. e forest...

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

... correspondence analysis (DCA) of the set of 188 relevés from Mramor. Horizontal and vertical axes show the most signiﬁcant directions of variability in the data set (non-canonical axes 1 and 2). e analysis ... Quecetalia pubes-centi-petraeae. Folia Geobotanica and Phytotaxonomica, 32: 22 1–2 58.CHYTRÝ M., 1998. Potential replacement vegetation: an approach to vegetation mapping of cultural landscapes. ... Applied Vegetation Science, 3: 16 3–1 80.HILL M.O., 1979. TWINSPAN: a FORTRAN program for arranging multivariate data in an ordered two-way table by classification of the individuals and attributes....

Báo cáo lâm nghiệp: "Canopy fuel characteristics and potential crown ﬁre behavior in Aleppo pine (Pinus halepensis Mill.) forests" pptx

... correlation was found between CFL and stand basalarea, and a weak positive correlation between CBD and standbasal area. The data for CBH and stand structure measure-ments failed to show any ... simulations indicatedthat crown ﬁre transition and spread is a common feature inAleppo pine stands. The low fuel strata gap, the heavy avail-able surface fuel load and the substantial height of ... simplistically assumes that radiation is the only heat transfer mode during wildland ﬁres. Another disadvantage of these models is that the complexity of physical modeling and the heat transfer...

Báo cáo lâm nghiệp: "Relationship between root growth potential and ﬁeld performance in Aleppo pine" doc

... 33.2Table IV . F-values and signiﬁcance of analysis of variance and RGP values for each test according to the stocklot factor (CA, CL, FA, GE,HT and HU). Mean values and standard error.In the ... signedby the Universidad Politécnica of Valencia and the Valencia RegionalGovernment (Generalitat Valenciana).REFERENCES[1] Alloza J .A. , An lisis de repoblaciones forestales en la ComunidadValenciana. ... and La Hunde sites of six outplanted Aleppo pine stocklots.Mean values and standard error.3.2. Field performance and relationship to RGP andseedling quality The performance of seedling stocklots...

Báo cáo hóa học: "Research Article A Rules-Based Approach for Conﬁguring Chains of Classiﬁers in Real-Time Stream Mining Systems Brian Foo and Mihaela van der Schaar" pot

... than the small rulespace. Finally, the large/distributed rule space provided the best performance as well as the lowest average delay and delayvariance. As indicated by Tab le 4 , each classiﬁer ... in an oﬃce building, or whether thereis an animal or a car in the video. The classiﬁers are SVM- based and can therefore dynamically set detection thresholds for the output scores for each image ... has an important meaningas a discount factor in game theoretic literature [26] but alsocan also be analytically derived by modeling each classiﬁeras an M/M/1 queuing facility often used for...

Báo cáo lâm nghiệp: "Forest yield index and its applicability to the assessment of future forest yields" docx

... parameter “value of ﬁnal cutting yield” elaborated and published by T et al. (2003) for the purposes of forest evaluation in Slo-vakia was used as a parameter for the quantiﬁcation of ... is the most important feature, and in the practice of forest management based on even aged forests with regulated felling area, a preferred attribute of the target forest. In Slovakia, proposals ... tree- based stand simulator SILVA: construction, application and evaluation. Forest Ecology and Management, 162: 3–2 1.PRETZSCH H., 2003. e elasticity of growth in pure and mixed stands of Norway...

Báo cáo lâm nghiệp: "The contribution of remote sensing to the assessment of drought eﬀects in forest ecosystems" ppsx

... to an assessmentat national or sub-national (regional) scales, it cannot be usedat local scale. An access to information at stand scale is neces-sary for forest management or as an aid to the ... estimate the daily value of the actualevapotranspiration. The estimates which have an accuracy on the order of ±1.5 mm are particularly valuable for describingspatial variations of evaporation ... and the detec-tion and assessment of anomalies and damage. Among them: – the development of digital analysis tools adapted to the as-sessment of scattered damage on very ﬁne resolution data;–...

Báo cáo lâm nghiệp: "This special issue of the Journal of Forest Science is a result of the international conference Species Diversity, Population Structure and Impact of Animals and" pdf

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