Topsoil volume optimization in the restoration of post‐mined areas

IF 2.8 3区环境科学与生态学 Q2 ECOLOGY

Restoration Ecology Pub Date : 2024-07-08 DOI:10.1111/rec.14222

Maurílio A. Figueiredo, Maria C. T. B. Messias, Mariangela G. P. Leite, Alessandra R. Kozovits

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引用次数: 0

Abstract

Transferring topsoil to severely degraded areas, such as mined areas, is an effective restoration technique. However, topsoil from pristine areas is a limited resource, making it important to seek techniques that optimize its use. Thus, this study assessed the effects of adding a small topsoil volume (10 L/m2 or 1 cm layer), a seed mix of 14 species, and litter (30 L/m2) alone and in different combinations in the restoration of a rupestrian grassland area degraded by bauxite mining. The substrate in the degraded area was turned prior to applying treatments. Vegetation cover, density of individuals, and species richness were measured 30 months after the experiment was set up. The isolated use of each material and the simultaneous addition of topsoil to the seed mix were not effective. The simultaneous use of topsoil, litter, and seed mix provided the best result, presenting the highest vegetation coverage (60%), density (67 ind/m2), and species richness (26 in 12 m2). Although, to a lesser extent, the combination of seed mix and litter also presented satisfactory results. The combination of the three materials promoted the revegetation of an area that had been without vegetation for around 50 years, presenting a density of individuals and species richness comparable to those obtained with the use of thick topsoil layers (15–30 cm). Furthermore, the topsoil volume used was optimized.

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采矿后地区恢复过程中表土量的优化

将表土转移到严重退化的地区（如雷区）是一种有效的恢复技术。然而，来自原始区域的表土是一种有限的资源，因此必须寻求优化利用表土的技术。因此，本研究评估了添加少量表土（10 升/平方米或 1 厘米土层）、14 个物种的混合种子和垃圾（30 升/平方米）单独或不同组合对恢复因铝土矿开采而退化的丘陵草地的影响。在使用处理方法之前，退化区域的基质已被翻转。实验开始 30 个月后，对植被覆盖度、个体密度和物种丰富度进行了测量。单独使用每种材料和在混合种子中同时添加表土的效果都不好。同时使用表土、垃圾和混合种子的效果最好，植被覆盖率（60%）、密度（67 个/平方米）和物种丰富度（26 个/12 平方米）都最高。虽然混合种子和垃圾的组合效果较差，但也取得了令人满意的结果。这三种材料的结合促进了约 50 年没有植被的地区的植被重建，其个体密度和物种丰富度与使用厚表土层（15-30 厘米）时的结果相当。此外，使用的表土量也得到了优化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Restoration Ecology 环境科学-生态学

CiteScore

6.50

自引率

15.60%

发文量

226

审稿时长

12-24 weeks

期刊介绍： Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.