Drawbacks of mangrove rehabilitation schemes: Lessons learned from the large-scale mangrove plantations
Drawbacks of mangrove rehabilitation schemes: Lessons learned from the large-scale mangrove plantations
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DOI：
10.1016/j.ecss.2017.02.015
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发表时间：
2017-11-05
影响因子：
2.8
通讯作者：
Fortes, Miguel
中科院分区：
文献类型：
--
作者：
Barnuevo, Abner;Asaeda, Takashi;Fortes, Miguel
红树林的恢复在过去的几十年里受到了广泛的关注，作为对全球范围内退化的回应。虽然记录在案的红树林恢复成就的成功和失败各不相同，但目标和计划是共同的，主要集中在种植和建立单种人工林。本研究评估了菲律宾中部大规模人工林的结构发育和复杂性，并与邻近的天然林进行了比较。我们的研究表明，在这两个网站的人工林有较低的结构复杂性比参考天然林。站点之间，次生演替在Banacon岛的单种种植园被抑制所反映的低再生潜力，而招聘和殖民化的非种植的物种，促进在奥兰戈岛。即使在Banacon岛的森林创建60年后，它仍然缺乏年轻群体的林下植被，这些林下植被共同构成了可以增加结构复杂性的再生潜力。尽管可以获得来自邻近天然森林的潜在种子来源，但非种植物种的补充和定殖并未取得进展。MDS分析结果表明，人工林与天然林的相似度平均为79.9%，贡献率最高的树种是R。stylosa（74.6%），S. alba（11.1%）和A.码头（10.6%）。在天然林中，同种植物的相异度贡献最大，而在人工林中，只有R。花柱花贡献了最高的相异度。在胸径的MDS排序分析中也显示出同样的趋势。密度和胸径的单因素ANOSIM排列检验表明，人工林和天然林之间存在显著差异。因此，作为造林管理干预措施的一部分，需要审查和评价目前的红树林重新造林做法，以确定其保护目标的轨迹，以实现恢复的生境的最佳成果和功能。(C)2017爱思唯尔有限公司版权所有
Mangrove rehabilitation programs received much attention in the past decades as a response to widespread global degradation. While the documented successes and failures of mangrove rehabilitation accomplishments were varied, the objective and scheme is common, mainly focused on planting and creating monospecific plantations. This study assessed the structural development and complexity of the large-scale plantations in the central part of Philippines and compared it with the adjacent natural stand as reference. Our study showed that planted forest in both sites had lower structural complexity than the reference natural forest. Between sites, secondary succession in the monospecific plantation in Banacon Island was inhibited as reflected by low regeneration potential, whereas recruitment and colonization of non-planted species was promoted in Olango Island. Even 60 years after the forest was created in Banacon Island, it still lacked the understory of young cohorts which together comprise the regeneration potential that can supposedly add to the structural complexity. Although a potential seed source from adjacent natural forest is available, recruitment and colonization of non-planted species did not progress. MDS analysis of tree density data showed clustering of planted forest from the natural stand. The average SIMPER dissimilarity was 79.9% and the species with highest contributions were R. stylosa (74.6%), S. alba (11.1%) and A. marina (10.6%). Within the natural forest, the same species had the highest dissimilarity contribution, whereas in the planted forest, only R. stylosa contributed the highest dissimilarity. The same trend was also revealed in the MDS ordination analysis of diameter at breast height (DBH). A one-way ANOSIM permutation test of the density and DBH showed a significant difference between the planted and natural forests. Thus, as part of silviculture management intervention, the current practices of mangrove reforestation needs to be reviewed and evaluated to determine the trajectories of its conservation objectives to achieve the best outcome and functionality of the restored habitat. (C) 2017 Elsevier Ltd. All rights reserved.