We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
大兴安岭南段次生林区倒木对 森林更新的影响.
- Authors
管立娟; 赵鹏武; 周 梅; 舒 洋; 刘兵兵; 郭娇宇; 张今奇; 周立文
- Abstract
[Objective] To study the distribution of fallen wood and the impact of fallen wood on forest regeneration of Saihanwula forest ecosystem,a typical area of Hanshan Mountains secondary forests locating at the southern parts of Daxing'anling Mountains,Inner Mongolia. [Method] The sample plot survey method was used to investigate the fallen wood and forest regeneration. [Result] The regeneration density of the fallen wood plot was 4 050±824 plants·hm−2, the regeneration density of the standing wood plot was 2 950±265 plants·hm−2, the regeneration density of the control plot was 2 625±237 plants·hm−2; the average reserve of the fallen wood in Saihanwula was 58.51±16.56 m³·hm−2. Among them, the distribution densities of the fallen wood for decomposition grades II, III, IV, and V were 50±21, 806±198, 189±76, and 22±5 plants·hm−2. The fallen logs in the study area mainly existed in the form of "trunk base fracture", accounting for 68.78% of the total number of fallen logs. [Conclusion] A large amount of fallen wood accumulates in the forest, which has the effect of obstructing, intercepting and shading the renewal of seeds, seedlings, saplings, etc. At the same time, the fallen wood will severely crush the renewed seedlings and other plants under the forest at the moment of dumping and for a long time after dumping. Negative effects such as crushing injuries, the rate of crushing injuries is 5.3% ~ 7.8%. However, the proper amount of fallen trees with high decomposition levels can promote the growth of seedlings and young trees, and the rational use of the relationship between fallen trees and forest regeneration can effectively promote the healthy development of forests.
- Subjects
INNER Mongolia (China); FORESTS &; forestry; FOREST regeneration; WOOD density; SECONDARY forests; MOUNTAIN forests; DEAD trees
- Publication
Forest Research, 2022, Vol 35, Issue 1, p97
- ISSN
1001-1498
- Publication type
Article
- DOI
10.13275/j.cnki.lykxyj.2022.01.011