当前位置: X-MOL 学术Ecol. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Gain in biodiversity but not in phytostabilization after 3 years of ecological restoration of contaminated Mediterranean soils
Ecological Engineering ( IF 3.8 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.ecoleng.2020.105998
L. Tosini , H. Folzer , A. Heckenroth , P. Prudent , M. Santonja , A.-M. Farnet , M.-D. Salducci , L. Vassalo , Y. Labrousse , B. Oursel , I. Laffont-Schwob

Abstract Recent studies consider the native flora as a potential source of plant candidates for phytostabilization of metal and metalloid (MM) contaminated soils, but ecological restoration is not the main objective of these researches. However, in contaminated areas, phytostabilization should be considered as a useful tool for ecological restoration. The present study takes stock of 3 years of a Mediterranean pilot site implementation using native plant species to recover plant and microbial communities (diversity and functions) together with soil remediation in the Calanques National Park. To determine the success of this operation, three in situ treatments were compared: ecological restoration plots characterized by the handling of physical environment (creation of cultivation terraces) and plants, negative control plots without vegetation but with the same physical environment handling as ecological restoration plots, and positive control plots with natural vegetation and no handling. The results suggest that an ecological restoration trajectory is initiated in the ecological restoration plots, characterized by a partial permanent plant cover. However, there is no evidence of a significant improvement of soil quality (evaluated by soil texture, pH, nutrients and organic carbon contents, cation exchange capacity, microbial biomass and activities) and phytostabilization efficiency after 3 years. Native plant communities and their associated microorganisms may need more time before improving soil quality and MM stabilization under the drastic Mediterranean conditions. Any amendment addition to accelerate restoration and MM immobilization was forbidden in this protected area. Under such conditions, an active restoration need to be carried out in this contaminated area even if resilient dynamics of the native plant communities may sporadically occur over a long period of time.

中文翻译:

在对受污染的地中海土壤进行 3 年的生态恢复后,生物多样性增加,但植物稳定性没有增加

摘要 最近的研究认为本地植物群是植物稳定金属和类金属 (MM) 污染土壤的潜在候选植物来源,但生态恢复不是这些研究的主要目标。然而,在污染地区,植物稳定应被视为生态恢复的有用工具。本研究评估了 3 年的地中海试点实施情况,使用本地植物物种恢复植物和微生物群落(多样性和功能)以及 Calanques 国家公园的土壤修复。为了确定此操作的成功,比较了三种原位处理:以处理物理环境(创建栽培梯田)和植物为特征的生态恢复地块,阴性对照地块无植被但物理环境处理与生态修复地块相同,阳性对照地块有天然植被且未处理。结果表明,在生态恢复样地中启动了生态恢复轨迹,其特征是部分永久性植物覆盖。然而,没有证据表明 3 年后土壤质量(通过土壤质地、pH、养分和有机碳含量、阳离子交换能力、微生物生物量和活性进行评估)和植物稳定效率有显着改善。在极端的地中海条件下,本地植物群落及其相关微生物可能需要更多时间才能改善土壤质量和 MM 稳定性。该保护区禁止任何为加速恢复和 MM 固定而进行的修改。在这种情况下,即使本地植物群落的弹性动态可能在很长一段时间内偶尔发生,也需要在这个受污染区域进行积极的恢复。
更新日期:2020-10-01
down
wechat
bug