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descDate Name Thumbnail Size User Description Versions
21:42, 5 March 20114.4.2-fig61.png (file)228 KBAspange (Illustration of calculation of the radius of the virtual circular sub-plot for a tree with diameter <math>d_i</math>. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. )1
21:32, 5 March 20114.4.1-fig59.png (file)273 KBAspange (Illustration of selection proportional to size (basal area) in Bitterlich sampling. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Fore)1
21:14, 5 March 20114.3-fig57.png (file)492 KBAspange (Principle of the mirage method for border plot correction. The center of the plot is mirrored at the forest edge outside the forest. From that new point, again a circular plot is laid out and all trees tallied again which fall into it; these trees are obs)2
21:11, 5 March 20114.3-fig56.png (file)387 KBAspange (Different techniques applied to boundary plots. Only the mirage technique is not causing a systematic error. From left to right: mirage method, shifting the plot, enlarging the circular plot at the same location such that the plot area is maintained, and )1
10:16, 3 March 20114.2.6.2-fig55.png (file)531 KBAspange (Volume over elevation estimated from the second Swiss National Forest Inventory. Reference: Kleinn C., B. Traub and C. Hoffmann 2002. A note on the slope correction and the estimation of the length of line features. Canadian Journal of Forest Research 3)1
10:02, 3 March 20114.2.6.1-fig54.png (file)539 KBAspange (Mean correction factor for line features as a function of terrain inclination a (bold line), assuming that the lines have a uniform distribution of angular deviation from the gradient vector. The dashed line gives the standard correction factor cos(<math>)1
09:35, 3 March 20114.2.2-fig47.png (file)520 KBAspange (Illustration of the inclusion zone approach: For fixed area circular plots, the inclusion zones are identical for all trees. Those trees are taken as sample trees in whose inclusion zones the sample point comes to lie. Reference: Kleinn, C. 2007. Lectur)2
09:34, 3 March 20114.2.2-fig46.png (file)330 KBAspange (With circular sample plots all trees are taken as sample trees that are within a defined distance (radius) from the sample point, which constitutes the plot center. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Depa)2
09:30, 3 March 20114.2.6-fig53.png (file)272 KBAspange (Distribution of inclination of forest plots of the second Swiss National Forest Inventory (class 0, 0-9.99%, class 1, 10-19.99%, etc.) Reference: Kleinn C., B. Traub and C. Hoffmann 2002. A note on the slope correction and the estimation of the length )1
09:10, 3 March 20114.2.6-fig52.png (file)313 KBAspange (A diagram showing an area of refer-ence and projected area into the map plane on a sloping terrain. Reference: Kleinn C., B. Traub and C. Hoffmann 2002. A note on the slope correction and the estimation of the length of line features. Canadian Journal o)1
08:57, 3 March 20114.2.2-fig51.png (file)398 KBAspange (Different combination of shapes for nested sub-plots. Reference: Prodan M., R. Peters, F. Cox and P. Real 1997. Mensura forestal. Serie investigación y educación en desarrollo sostenible. IICA/GTZ. 561p.)1
08:53, 3 March 20114.2.2-fig50.png (file)727 KBAspange (Comparison of the inclu-sion zone approach for nested circular sub-plots (B) and for fixed circu-lar plots (A). Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Facult)1
08:52, 3 March 20114.2.2-fig49.png (file)296 KBAspange (Nested sub-plots showing 3 circular plots having different sizes, radii, but sharing same plot center Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Fores)1
08:51, 3 March 20114.2.2-fig48.png (file)402 KBAspange (Typical diameter distribution in a natural forest. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Forest Ecology, Georg-August-Universi)1
00:45, 2 March 20112.8.5-fig43.png (file)452 KBAspange (Allometric functions for different tree compartments and total biomass for a Norway spruce dataset. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest )1
00:43, 2 March 20112.8.5-fig42.png (file)770 KBAspange (Relationship between dbh, tree height and aboveground biomass on a metric (original) scale (left) and after logarithmic transformation of the variables (right) Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Departmen)1
22:58, 1 March 20112.8.4-fig40.png (file)1.31 MBAspange (Schematic graphs of confidence intervals for the case of equal variances (left) and the unequal variances case as it presents itself with volume functions (right). Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Depar)1
22:46, 1 March 20112.8.4-fig39.png (file)596 KBAspange (Residual plot of residual volume (<math>dm^3</math> as Y-axis and ''dbh'' (cm) as X-axis showing unequal variance across ''dbh'' classes Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory )1
10:38, 23 February 2011TIF students.JPG (file)87 KBFehrmann (Students in the field Category:Picture of the week)1
10:37, 23 February 2011Miombo.jpg (file)93 KBFehrmann (Forest Inventory in Miombo woodlands, Malawi Category:Picture of the week)1
10:36, 23 February 2011Guadua.jpg (file)104 KBFehrmann (Guadua angustifolia, Columbia)1
15:36, 20 February 2011Grassdata example.jpg (file)70 KBLburgr (Screenshot of a file-manager window displaying a GRASS database directory with locations and mapsets)1
21:53, 18 February 20112.8.4-fig38.png (file)425 KBAspange 1
21:23, 18 February 20112.8.3-fig37.png (file)774 KBAspange (A typical height curve in a natural uneven-aged stand. If the forest is in a “steady state”, This curve does not change over time and can simultaneously be interpreted as growth curve. Reference: Prodan M., R. Peters, F. Cox and P. Real. 1997.Mensur)1
20:14, 18 February 20112.8.3-fig36.png (file)480 KBAspange (The same height curve as in Figure 2 but drawn in a grid with ln(''dbh'') on the abscissa instead of ''dbh'' only.)1
20:08, 18 February 20112.8.3-fig35.png (file)825 KBAspange (Simple linear regression with ln(dbh) as sole independent variable. In addition to the data points, the mean heights per 10cm dbh-class are given. In this case, the model is obviously not flexible enough to adjust well to the height values for very large )1
20:07, 18 February 20112.8.3-fig34.png (file)568 KBAspange (Height curves in even aged stands exhibit typical changes over time which are depicted here simplified and schematically: they get flatter, shift right on the dbh axis and up on the height axis and cover a wider range of diameters (“become longer”).)1
19:50, 18 February 2011Nodata example.jpg (file)658 KBLburgr (A rastermap in QGIS with an open identify-feature window displaying a nodata pixel)1
19:41, 18 February 20112.8.2-fig33.png (file)175 KBAspange (Illustration of the least squares technique. The distance which is squared is not the perpendicular one but the distance in <math>y</math>-direction as we are interested in predictions over given values of <math>x</math>.)2
19:26, 18 February 20112.8.2-fig32.png (file)474 KBAspange (Straight line representing a linear regression model between variable ''X'' and ''Y''.)1
18:52, 18 February 20112.7.2.3-tab4.png (file)373 KBAspange („Optimal“ distribution of measurement points along a stem to determine stem volume with highest precision by interpolation with cubic splines. Three measurement points are “fixed”: at 0.2 m height (assumed felling height), at 1.3 m (dbh) and total)1
18:36, 18 February 20112.7.2.3-fig31.png (file)773 KBAspange (Illustration of a taper curve which models the stem shape from the tree bottom (left) to the top (right). The radius is given as a function of tree height/stem length. By rotating this curve, we obtain a solid which is a model for the stem from which the )1
18:25, 18 February 20112.7.2.2-fig30.png (file)1.15 MBAspange (The four basic geometric solids for sectionwise volume calculation. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Forest Ecology, Geor)1
18:20, 18 February 20112.7.2.2-fig29.png (file)513 KBAspange (Subdivision of a stem into sections.)1
17:25, 18 February 20112.6.7.2-fig28.png (file)1.55 MBAspange (Absolute ans relative form factor measurment.)1
17:09, 18 February 20112.6.7.2-fig27.png (file)993 KBAspange (Example of a taper curve characterizing the shape of a stem.)1
16:37, 18 February 20112.6.6-fig26.png (file)820 KBAspange (''1'' predominant ''2'' dominant ''3'' co-dominant ''4'' dominated ''5'' falling behind (according to Kraft))1
10:53, 18 February 2011QGIS raster transparency.jpg (file)140 KBLburgr (A screenshot of the raster transparency tab in the QGIS raster layer properties under Ubuntu)1
09:34, 18 February 2011Colormap example.jpg (file)220 KBLburgr (Example of a rastermap displayed with the colormap option in QGIS)1
22:51, 17 February 20112.6.4-fig25.png (file)204 KBAspange (Increment borer. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Forest Ecology, Georg-August-Universität Göttingen. 164 S.)1
22:34, 17 February 20112.6.3-fig24.png (file)1.17 MBAspange (''Left:'' Projection of a tree crown. ''Right:'' Crown mirror - Device to measure tree crown projection. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of F)1
22:31, 17 February 20112.6.3-fig23.png (file)1.2 MBAspange (Illustration of some crown attributes. Reference: Kramer, H. and Akca, A. 1995. Leitfaden zur Waldmesslehre. 3rd Edition. J.D. Sauerländers Verlag, Frankfurt. 266p.)1
21:58, 17 February 20112.5-fig21.png (file)1.19 MBAspange (Uneven oblique plane as used in Field Manual 2nd Swiss NFI. Reference: Brändli UB, A Herold, H Stierlin und J Zinggeler. 1994. Schweizerisches Landesforstinventar. Anleitung für die Feldaufnahmen der Erhebung 1993-1995. Birmensdorf, Eidg. Forschungsan)2
20:54, 17 February 20112.3.4-fig20.png (file)87 KBAspange (Height meter of Christen which utilizes the geo-metric principle of height measurements. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science an)2
19:51, 17 February 20112.2.7-fig15.png (file)85 KBAspange (Relascope units in the mirror relascope. The units are on a micro scale which adjusts automatically to slope; that is, the scale becomes more and more narrower with increasing deviation from the horizontal. By that construction principle it is guaranteed )1
19:36, 17 February 20112.2.6-fig14.png (file)54 KBAspange (In order to determine the diameter, the angle <math>\beta</math> and the distance <math>e_s</math> need to be determined. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensi)1
19:33, 17 February 20112.2.6-fig13.png (file)111 KBAspange (Geometric principle of an optical caliper based on the measurement of an angle. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Forest )1
19:08, 17 February 20112.2.5.3-fig12.png (file)64 KBAspange (Measurement rinciple of an optical caliper like Wheeler's pentaprism. Reference: Kleinn, C. 2007. Lecture Notes for the Teaching Module Forest Inventory. Department of Forest Inventory and Remote Sensing. Faculty of Forest Science and Forest Ecology, G)1
18:51, 17 February 20112.2.5.2-fig11.png (file)157 KBAspange (The Finn caliper: fixed on a pole the tree diameter can be read up to a height of 7m. Reference: Keller M. (ed.). 2005. Schweizerisches Landesforstinventar. Anleitung für die Feldaufnahmen der Erhebung 2004-2007.)2
18:37, 17 February 2011QGIS colormap dialog.jpg (file)176 KBLburgr (Screenshot of the QGIS raster layer properties colormap dialog (in Ubuntu))1

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