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- Title
华北落叶松天然次生林更新及影响因素.
- Authors
李 进; 石晓东; 高润梅; 李 聪; 张雨晴; 李红月
- Abstract
In order to clarify the regeneration status of Larix principis-rupprechtii forest in Guandi Mountain and explore the influence of environmental factors on its regeneration, the seedlings and saplings of three stands of Larix principis-rupprechtii forest were investigated by a field investigation method and the regeneration density was used to reveal the natural regeneration status. The results were as follows: Larix principis-rupprechtii was poorly regenerated, and seedlings and saplings were scarce. In the 10 square plots of 20 m X 20 m, only 17 seedlings and 44 saplings were found gathered on the edges or gaps of the forest. In contrast, there were 621 seedlings and 630 saplings of Picea spp. in the 10 plots, indicating that it regenerated well. Both altitude and slope did not significantly affect the regeneration of the two tree species. The regeneration of Larix principis-rupprechtii was significantly affected by the slope aspect. The regeneration density on the sunny slope was ( 163 ±51) tree. hm -z, which was higher than that of shady slope with only(77±35) tree.hm-2 . The regeneration density was not significantly different among the three stands. The regeneration of Larix principis-rupprechtii was affected by the canopy density of the stands. The maximum regeneration density was 250 tree. hm-2 in stands with a canopy density of 0. 25, and the regeneration density slightly decreased as the canopy density increased. There was no regeneration when the canopy density exceeded 0.80. The regeneration of Larix principis-rupprechtii was also significantly affected by the thickness of the undecomposed litter layer and the unifonnity of the thickness among the three litter layers. Larix principis-rupprechtii was prone to regenerate on plots with the thickness of each litter layer between 2 -4 cm. Light and litter were the main factors affecting the regeneration of Larix principis-rupprechtii on Guandi Mountain.
- Publication
Journal of Forest & Environment, 2020, Vol 40, Issue 6, p588
- ISSN
2096-0018
- Publication type
Article
- DOI
10.13324/j.cnki.jfcf.2020.06.004