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首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >Substrate-specialist plants for restoring vegetation in post-mining gypsum substrates
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Substrate-specialist plants for restoring vegetation in post-mining gypsum substrates

机译：底物 - 专业植物，用于恢复矿床后石膏基板中的植被

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Restoration in degraded gypsum areas is challenging due to physical-chemical soil characteristics that limit plant development. Facilitation mediated by the stress-adapted gypsophytes may be a key process in restoration because it potentially favors the establishment of lower stress-adapted species underneath, promoting plant succession. This study aimed to assess the suitability of the gypsophyte Gypsophila struthium Loefl. for restoring vegetation in gypsum mines, focusing on its role as a pioneer species that may act as an ecosystem engineer and hence as a nurse plant. We conducted a vegetation survey in a gypsum mine in NE Spain, in plots where the original topsoil was reinserted in different years after the mineral extraction to study plant community succession and reorganization through time. Complementary, we set a sowing and planting experiment in a gypsum spoil dump to assess how G. struthium may positively affect soil and micro-environmental conditions and, consequently, may act as a nurse species facilitating plant establishment and development. To test the nurse role of G. struthium, we sowed seeds and planted seedlings of Helianthemum squamatum (L.) Pers. and Stipa lagascae Roem. & Schultz under the canopy of adult individuals of G. struthium, and in the bare soil. We found that G. struthium appeared as a pioneer shrub in the restored gypsum mine and accumulated plant diversity in the local vicinity in mature plant communities. This shrub had a positive effect on seed germination and seedling growth of the test species in the experiment and improved soil and micro-environmental conditions under its canopy. Therefore, we recommend two non-exclusive actions to enhance restoration in post-mining gypsum substrates: (1) to promote the establishment of the pioneer plant G. struthium by improving the physical-chemical and biological soil properties through the re-insertion of the original topsoil that containspropagules of the former community; (2) to apply active restoration actions, using G. struthium as a nurse plant through sowing seeds or planting seedlings of other species of interest under its canopy.
机译：由于物理化学土壤特征限制植物发育，降解石膏区域的恢复是挑战性的。由应激适应的石膏介导的促进可以是恢复的关键过程，因为它可能有利于在下面的下部应力适应的物种的建立，促进植物连续。本研究旨在评估石膏Gypsophila Struthium Lofl的适用性。为了恢复石膏矿山中的植被，重点是其作为一种先驱物种，可以充当生态系统工程师，因此作为护士植物。我们在NE西班牙的一个石膏矿进行了植被调查，该植被调查在矿藏萃取后在不同年内重新插入原始表土，以研究植物群落的连续和重组通过时间。互补，我们在石膏粪便垃圾上设立了播种和种植实验，以评估G. Struthium如何积极地影响土壤和微环境条件，因此，可以作为促进植物建立和发展的护士物种。为了测试G. Struthium的护士作用，我们播种了HelianThemum Squamatum（L.）的种子和种植幼苗。和Stipa Lagascae Roem。 ＆schultz在G. Struthium的成年人冠层下，并在裸露的土壤下。我们发现G. Struthium在恢复的石膏矿石中出现了先锋灌木，在成熟的植物社区的当地附近积累了植物多样性。该灌木对实验中试验物种的种子萌发和幼苗生长具有积极影响，并在其树冠下改善土壤和微环境条件。因此，我们建议在采矿后石膏基板中提高两项非独家行动，以便通过重新插入来促进通过改善物理化学和生物土壤性质来促进先驱植物G. Struthium的建立。原始表土，其中包含前社区的买卖; （2）通过将G. Struthium作为护士植物施用主动恢复措施，通过播种种子或种植其他物种在其树冠下种植其他物种的幼苗。

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