Effects of natural and human-assisted regeneration on landscape dynamics in a Korean pine forest in Northeast China.
Effects of natural and human-assisted regeneration on landscape dynamics in a Korean pine forest in Northeast China.
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自然和人类辅助再生对中国东北朝鲜松树林的景观动态的影响。
DOI：
10.1371/journal.pone.0082414
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Dai L
中科院分区：
文献类型：
--
作者：
Zhao F;Yang J;He HS;Dai L
不适当的森林采伐可能会降低森林生态系统的功能和服务。人类辅助更新(例如，种植)通常被用来提高森林恢复速度，从而减少更新失败。种子传播是一个基本的生态过程，也可以影响森林更新的时空格局。在这项研究中，我们在景观尺度上调查了种植和种子传播对森林更新的相对贡献。由于木材采伐强度和采伐区及其周围的种子可获得性可能会使这种影响变得更加复杂，因此我们也评估了这些因素对森林景观动态的影响。利用森林景观模型LANDIS对东北中国地区红松-阔叶混交林的动态进行了模拟。我们考虑了三个因素：木材采伐强度(3个水平)、种子传播和是否种植。结果表明，在演替初期的高强度采伐条件下，种植对维持红松的丰富度更为重要。相反，在演替后期，种子传播更为重要。红松在中、低采伐强度下，通过种子播撒可以成功地更新。我们的结果还表明，有效的自然更新将需要保护种子生产树(种子雨)。这一研究结果为更有效地管理中国温带森林以及可能的其他类似生态系统提供了依据。
Improper forest harvesting can potentially degrade forest ecosystem functions and services. Human-assisted regeneration (e.g., planting) is often used to increase the rate of forest recovery and thereby reduce regeneration failure. Seed dispersal is a fundamental ecological process that can also influence spatio-temporal patterns of forest regeneration. In this study, we investigated the relative contribution of planting and seed dispersal on forest regeneration at landscape scales. Because such influences can be further complicated by timber harvest intensity and seed availability within and around harvested area, we also evaluated the effects of those factors on forest landscape dynamics. We used the forest landscape model LANDIS to simulate the dynamics of Korean pine-broadleaf mixed forests in Northeast China. We considered three factors: timber harvest intensity (3 levels), seed dispersal and whether or not planting was used. The results showed that planting was more important in maintaining the abundance of Korean pine (Pinus koraiensis), a climax keystone species in this region, under the high-intensity harvesting option during early succession. In contrast, seed dispersal was more important during late succession. Korean pine can be successfully regenerated through seed dispersal under low and medium harvest intensities. Our results also indicated that effective natural regeneration will require protecting seed-production trees (seed rain). This study results provide a basis for more effectively managing Chinese temperate forests and possibly other similar ecosystems.
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影响因子：
5.9
作者：
Cramer, Jennifer M.;Mesquita, Rita C. G.;Williamson, G. Bruce
通讯作者：
Williamson, G. Bruce
影响因子：
2.2
作者：
Lafleur, Benoit;Pare, David;Bergeron, Yves
通讯作者：
Bergeron, Yves
影响因子：
4.8
作者：
McEuen, AB;Curran, LM
通讯作者：
Curran, LM
影响因子：
3.7
作者：
He, HS;Mladenoff, DJ
通讯作者：
Mladenoff, DJ
影响因子：
3.9
作者：
He, HS;Hao, ZQ;Chang, Y
通讯作者：
Chang, Y