| Автор | Lundqvist, Lars |
| Автор | Fridman, Eva |
| Дата выпуска | 1996 |
| dc.description | In single‐tree selection, trees removed by harvest or lost through mortality are replaced by ingrowth from the seedling/sapling bank. Because the level of ingrowth is governed not only by the recruitment rate of new seedlings, but also by mortality and growth rates within the seedling/sapling stratum, knowledge of how these processes are related to the tree stratum is important for successful application of single‐tree selection. Therefore, Norway spruce (Picea abies (L.) Karst.) regeneration (0.1 m ≤ height ≤ 2.0 m) was measured on seventy 100 m<sup>2</sup> circular subplots at each of two sites in central and northern Sweden. Both sites had previously been selectively logged, but the time elapsed since the last harvest was at least 30 yrs. Basal area of trees of at least 2 m height within three different radii from the subplot centres was measured. Measurements on regeneration included height and leader length. Influence of local stand basal area on density and growth of regeneration was analysed by ordinary least‐squares linear regression for each of four height intervals. Regeneration was significantly aggregated at both sites, but number of Norway spruce seedlings and saplings per circular subplot was not correlated to local stand basal area. Out of 36 regressions, only eight showed a significantly (p < 0.05) negative correlation between seedling and sapling height growth and local stand basal area. In five of these cases, removal of one point (subplot) made p > 0.05. The results suggest that density and growth of Norway spruce regeneration in selectively logged uneven‐aged Norway spruce stands is affected more by ground conditions than by local stand basal area. |
| Формат | application.pdf |
| Издатель | Taylor & Francis Group |
| Копирайт | Copyright Taylor and Francis Group, LLC |
| Тема | Basal area |
| Тема | density |
| Тема | growth |
| Тема | Norway spruce |
| Тема | Picea abies |
| Тема | regeneration |
| Тема | spatial distribution. |
| Название | Influence of local stand basal area on density and growth of regeneration in uneven‐aged Picea abies stands |
| Тип | research-article |
| DOI | 10.1080/02827589609382948 |
| Electronic ISSN | 1651-1891 |
| Print ISSN | 0282-7581 |
| Журнал | Scandinavian Journal of Forest Research |
| Том | 11 |
| Первая страница | 364 |
| Последняя страница | 369 |
| Аффилиация | Lundqvist, Lars; Department of Silviculture, Swedish University of Agricultural Sciences |
| Аффилиация | Fridman, Eva; Department of Silviculture, Swedish University of Agricultural Sciences |
| Выпуск | 1-4 |
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