Restoring montane cloud forest: establishment of three Fagaceae species in the old fields of central Veracruz, Mexico
Restoring montane cloud forest: establishment of three Fagaceae species in the old fields of central Veracruz, Mexico
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恢复山地云林：在墨西哥韦拉克鲁斯州中部的老田里种植三种壳斗科物种
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发表时间：
2015
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通讯作者：
J. Benítez‐Malvido
中科院分区：
文献类型：
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作者：
M. Muñiz;G. Williams‐Linera;J. Benítez‐Malvido
热带山地云雾林正在迅速消失，我们对如何恢复这一系统的了解有限。在墨西哥韦拉克鲁斯州中部的云雾林中，我们研究了三种本土树种，水青冈，德国栎和Q. xalapensis，移植到废弃的牧场（<1年）和次生林（9-17年）。两种生境的微环境不同，弃耕草地的温度和光合有效辐射高于次生林，湿度低于次生林。幼苗存活率在次生林比在牧场：F。grandifolia，94和64%; germana，分别为88和68%; xalapensis分别为61和57%。死亡原因因栖息地而异，地鼠（24.2%死亡率）和小鼠（4.8%）杀死了牧场中最多的幼苗，而在次生林中，最重要的原因是潮湿（16%）。弃耕草地的树高和断面积的相对生长率显著高于次生林;生长速率最高的是沙拉拉木，其次是Q. germana和F.大叶的。在这个山区云雾森林地区的环境条件似乎比其他低地系统的条件下，种植幼苗的压力较小，因为频繁的云有利于他们的建立，即使在开放的网站。我们得出结论，壳斗科物种可以成功地建立在废弃的牧场在中温环境。因此，所研究的树种可用于加速同一地区不同演替阶段云雾林的更新。
Tropical montane cloud forest is rapidly disappearing and our knowledge of how to restore this system is limited. In a cloud forest of central Veracruz, Mexico, we studied seedling survival, growth, and causes of mortality (microenvironment and herbivory) of three native tree species, Fagus grandifolia, Quercus germana, and Q. xalapensis, transplanted into abandoned pastures (<1 year old) and secondary forests (9–17 years old). Microenvironment differed between the two habitats, temperature and photosynthetically active radiation were higher, and humidity was lower in the abandoned pastures than in the secondary forests. Seedling survival was greater in secondary forests than in pastures: F. grandifolia, 94 and 64%; Q. germana, 88 and 68%; and Q. xalapensis, 61 and 57%, respectively. The cause of mortality differed between habitats, with gophers (24.2% mortality) and mice (4.8%) killing the most seedlings in pastures, and damping‐off (16%) was the most important cause in secondary forests. The relative growth rate in height and basal area was significantly higher in abandoned pastures than in secondary forests; Q. xalapensis had the highest growth rate, followed by Q. germana and F. grandifolia. The environmental conditions in this mountainous cloud forest region seem less stressful to planted seedlings than the conditions of other lowland systems, as frequent clouds favor their establishment even in open sites. We conclude that Fagaceae species can successfully establish in abandoned pastures in mesic environments. Thus, the species studied can be used to speed cloud forest regeneration in the same area at different successional stages.