Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(5), 1485-1491 | DOI: 10.11118/actaun201563051485
Tree Quality and Forest Structure Changes in the First Stage of Conversion of High Forest Into Coppice-with-standards
- 1 Department of Forest Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
- 2 Department of Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
The work is aimed on evaluation of the effect of thinning on stand structure and changes of the quality of the trees under strong thinning measures in the forest stand with prevailing Quercus petraea in South Moravian Region of the Czech Republic. Three thinning variants with 100, 140 and 180 remaining trees per hectare were applied in four replications to simulate structure of a coppice-with-standards forest on a four hectare plot of high forest. On average, the implemented thinning reduced the total tree number from 717 to 140 individuals per hectare. After the thinning, the ratio of potential standards according to stories (the youngest, medium and the oldest) was 68:29:3, which corresponds with 46:44:10 ratio according to the volume. An average of 70-83% of the volume (76-85% of trees) was harvested in individual cells with different thinning variants. Relative frequencies of potential standards in quality score classes (A:B:C) were balanced and corresponded to the mean ratio of 11:49:40. The relative distribution of timber volume in score classes was also balanced and corresponded on average to the final ratio of 22:46:32. After the thinning it almost reached the generally recommended diameter distribution of standards in a coppice-with-standards. So far the applied measures did not significantly increase the overall quality of the remaining tree stand.
Keywords: coppice-with-standards, strong thinning, stand structure, sessile oak, score number
Grants and funding:
The article was supported by the Ministry of Environment of the Czech Republic (Project No. SP/2d4/59/07), the Ministry of Agriculture of the Czech Republic (Project No. QH71161) and the Ministry of Education, Youth and Sports of the Czech Republic (Project No. CZ.1.07/2.3.00/20.0267). We also would like to thank to anonymous reviewers for constructive suggestions that helped us improve the quality of the MS.
Prepublished online: October 29, 2015; Published: December 1, 2015 Show citation
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