Tropical forest recovery from logging: a 24 year silvicultural experiment from Central Africa.
Tropical forest recovery from logging: a 24 year silvicultural experiment from Central Africa.
复制标题
DOI：
10.1098/rstb.2012.0302
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Picard N
中科院分区：
文献类型：
--
作者：
Gourlet-Fleury S;Mortier F;Fayolle A;Baya F;Ouédraogo D;Bénédet F;Picard N
在所谓的可持续管理计划的背景下，大面积的非洲潮湿森林正在被砍伐。然而，从长远来看，是否可以维持每公顷砍伐几棵树，同时保留其他森林服务，仍然存在争议。我们使用了一项独特的 24 年造林实验，涵盖在中非共和国建立的 10 4 公顷地块，以评估与伐木（2 至 9 棵树 ha−1 大于或等于 80 cm DBH）和间伐（11-41 棵树 ha−1 大于或等于 50 cm DBH）相关的干扰对森林结构和动态的影响。营林处理前，样地地上生物量（AGB）和木材蓄积量（即大于或等于 80 cm DBH 的商品树体积）分别为 374.5 ± 58.2 Mg ha−1 和 79.7 ± 45.9 m3 ha−1。我们发现 (i) 自然对照林的 AGB 增加（2.58 ± 1.73 Mg 干质量 ha−1 yr−1），木材蓄积量减少（−0.33 ± 1.57 m3 ha−1 yr−1）； (ii) AGB 在测井和间伐后恢复得非常快，恢复速度与扰动强度成正比（24 年后平均恢复：144%）。与对照相比，记录图中的增益几乎翻了一番（4.82 ± 1.22 Mg ha−1 yr−1），记录+稀疏图中的增益增加了三倍（8.03 ± 1.41 Mg ha−1 yr−1）； (iii) 木材储量恢复缓慢（24 年后平均恢复：41%），采伐地块中的恢复率为 0.75 ± 0.51 m3 ha−1 yr−1，采伐+间伐地块中的恢复率为 0.81 ± 0.74 m3 ha−1 yr−1。尽管间伐显着增加了生物量的增加，但对木材蓄积量的增加没有影响。然而，间伐确实促进了中小型用材树的生长和生存，并且应该对下一个砍伐周期产生积极影响。
Large areas of African moist forests are being logged in the context of supposedly sustainable management plans. It remains however controversial whether harvesting a few trees per hectare can be maintained in the long term while preserving other forest services as well. We used a unique 24 year silvicultural experiment, encompassing 10 4 ha plots established in the Central African Republic, to assess the effect of disturbance linked to logging (two to nine trees ha−1 greater than or equal to 80 cm DBH) and thinning (11–41 trees ha−1 greater than or equal to 50 cm DBH) on the structure and dynamics of the forest. Before silvicultural treatments, above-ground biomass (AGB) and timber stock (i.e. the volume of commercial trees greater than or equal to 80 cm DBH) in the plots amounted 374.5 ± 58.2 Mg ha−1 and 79.7 ± 45.9 m3 ha−1, respectively. We found that (i) natural control forest was increasing in AGB (2.58 ± 1.73 Mg dry mass ha−1 yr−1) and decreasing in timber stock (−0.33 ± 1.57 m3 ha−1 yr−1); (ii) the AGB recovered very quickly after logging and thinning, at a rate proportional to the disturbance intensity (mean recovery after 24 years: 144%). Compared with controls, the gain almost doubled in the logged plots (4.82 ± 1.22 Mg ha−1 yr−1) and tripled in the logged + thinned plots (8.03 ± 1.41 Mg ha−1 yr−1); (iii) the timber stock recovered slowly (mean recovery after 24 years: 41%), at a rate of 0.75 ± 0.51 m3 ha−1 yr−1 in the logged plots, and 0.81 ± 0.74 m3 ha−1 yr−1 in the logged + thinned plots. Although thinning significantly increased the gain in biomass, it had no effect on the gain in timber stock. However, thinning did foster the growth and survival of small- and medium-sized timber trees and should have a positive effect over the next felling cycle.
登录
查看更多内容
影响因子：
3.7
作者：
Hall, JS;Harris, DJ;Ashton, PMS
通讯作者：
Ashton, PMS
影响因子：
3.4
作者：
Makana, Jean-Remy;Thomas, Sean C.
通讯作者：
Thomas, Sean C.
影响因子：
2.4
作者：
Brncic, Terry M.;Willis, Kathy J.;Bailey, Richard M.
通讯作者：
Bailey, Richard M.
影响因子：
3.7
作者：
de Graaf, NR;Poels, RLH;Van Rampaey, RSAR
通讯作者：
Van Rampaey, RSAR
影响因子：
3.4
作者：
Fredericksen, TS;Putz, FE
通讯作者：
Putz, FE