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首页> 外文期刊>Ciência Florestal >Use of geotextile collars in the revegetation of a fragment of gallery forest in the Brasília Botanical Garden, Brazil: seedlings survival and development
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Use of geotextile collars in the revegetation of a fragment of gallery forest in the Brasília Botanical Garden, Brazil: seedlings survival and development

机译：在巴西巴西利亚植物园中的廊林碎片的植被再造中使用土工领：幼苗的生存与发展

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摘要

Human activities have caused damage to Cerrado, the second largest Brazilian biome. Among the most threatened Cerrado phyto-physiognomies stand out gallery forests. Many projects have aimed at gallery forest restoration, but herb invasion hinders the establishment and development of Cerrado woody species.In this scenario, 2 ha of gallery forest along Cabe?a de Veado stream within the Brasília Botanical Garden were cleared for subsistence agriculture and the area was subsequently dominated by Melinis minutiflora Beauv. (molasses grass). Some attempts at site restoration have failed due to competition between M. minutiflora and planted tree seedlings. Thus, this study aimed to evaluate the effect of using geotextile collars made of natural fibers on survival and development of Cerrado tree seedlings introduced in the area dominated by molasses grass. Seedlings of third native tree species were planted in holes chemically fertilized, and half of seedlings received geotextile collars while the other half did not for experimental control purpose. Four surveys were carried out, when survival, seedling height and diameter were measured. Results indicate that the geotextile collars increased seedlings survival in 19.6% and seven out third species achieved greater al-lometric increment from the use of geotextile collars. Increments of two species were higher in the absence of collars and the increment of half of species was not significantly affect by the geotextile protection.
机译：人类活动已经破坏了巴西第二大生物群落塞拉多。在最受威胁的塞拉多植物生理学中，有突出的画廊森林。许多项目旨在恢复画廊森林，但草本植物的入侵阻碍了塞拉多木本物种的建立和发展。在这种情况下，巴西利亚植物园内Cabe？a de Veado河沿流的2公顷画廊森林被清除，用于自给农业和随后该地区被Melinis minutiflora Beauv所统治。 （糖蜜草）。由于M. minutiflora和种植的树苗之间的竞争，一些恢复原位的尝试失败了。因此，本研究旨在评估使用天然纤维制成的土工纺织领对在糖蜜草为主的地区引入的塞拉多树木幼苗的存活和发育的影响。将第三种本地树种的幼苗种植在化学施肥的孔中，一半的幼苗接受土工织物项圈，而另一半则不用于实验控制目的。在测量存活率，幼苗高度和直径时进行了四次调查。结果表明，土工领提高了19.6％的幼苗存活率，而第三种中有7种通过使用土工领实现了更高的高度增量。在没有领的情况下，两个物种的增量较高，并且一半的物种增量不受土工布保护的显着影响。

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