Download Continuous Cover Forestry: Assessment, Analysis, Scenarios by Steen Magnussen, Mike Wulder, David Seemann (auth.), Klaus PDF

By Steen Magnussen, Mike Wulder, David Seemann (auth.), Klaus von Gadow, Jürgen Nagel, Joachim Saborowski (eds.)

The large-scale software of recent silvicultural structures has turn into a political truth in lots of elements of the realm. This contains a steady transformation of conventional silvicultural perform in the direction of non-stop conceal Forestry, sometimes called near-natural wooded area administration, favouring combined uneven-aged stands, site-adapted tree species and selective harvesting. Selective harvesting platforms have a protracted culture. particular CCF-related source overview, forecasting and sustainable harvest keep watch over suggestions were built, yet information about their use usually are not well known. the target of this quantity is to offer cutting-edge study effects and strategies with regards to CCF administration with an emphasis on platforms engineering and modelling. utilizing an easy category in response to the improvement of bushes quantity over age or time we could distinguish varieties of sustainable wooded area administration structures. Rotation wooded area administration (RFM) structures, characterised through typical silvicultural remedies and repetitive cycles of clearfelling by way of planting; and non-stop disguise forestry (CCF) structures that are characterised through selective harvesting and normal regeneration, leading to uneven-aged buildings and often additionally in multi-species forests. the excellence is mostly the results of judgements on the subject of the price of trees harvesting, simplicity of administration, or a variety of intangible advantages. The oldest and so much ideal examples of CCF platforms are the so­ referred to as plenter choice forests present in France, Switzerland, Slowenia and Germany. at the present time, CCF structures are encountered in a number of areas of Europe, North the US and in a few tropical and sub-tropical forests of South Africa, Asia and South America.

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Extra info for Continuous Cover Forestry: Assessment, Analysis, Scenarios

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Therefore merely the 'Option CIR' is recommended to be used. Using the 'Option CIR' and requesting a high quality for the assessment, the terrestrial field work can be reduced at least by 43,9 % compared to the traditional method of stand description. But since for some attributes a reduced quality of the assessment is tolerable in Dees, Duvenhorst, Gross, Koch 48 practise, in practise merely for an estimated proportion of 5% to 10 % of the stands field work assistance is required. Furthermore the use the 'Option CIR' improves the objectivity and the checkability of the provided information.

Since the stands characterized by a differentiated spectral response are included in nonuniform group of stands, the range of surface which is non-uniform spectrally contains, Resource Assessment and Monitoring 33 among others, multi-species and multi-storage stands, group and she1terwood cuttings which are so typical for CCF, and stands with differentiated structure caused by defoliation due to insect infestation, industrial pollution, fire etc. (figure 4). Figure 3. Structure of non-uniform stands seen on Landsat TM images (openings, group cuttings, shelterwood cuttings, multi-storage, multi-species) Figure 4.

_ ',~ '1·):+ '~~""'J ' • '~J'{' . • . ~. ~~ "4, ' ' •• • ,. ' ,. • " ~ " . f'. . , "" '. 11]. '1 .. • ':"" 'I~ ~ .... ~. '" ,J! ~ >,'~ , ... ,. ~ ;", • ~. ~" '- . ""~". ' ... ~ . ' ~ ;: " w/' " " - ... ,.. .. , . '11': •• '" . "'~ ~ ~. -... 1:'''WIi' Figure 4, Spatial distribution of standing dead wood calculated by the kNN -method (source: Haussler et ai" 1999) Geo-statistical Methods In situations where information from terrestrial surveys but no remote sensing data or other, geo-referenced wall-to-wall products are available mapped information can be obtained by means of geo-statistical methods.

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