Abstract Dominant species influence both species and functional composition of the vegetation as well as soil properties of the substrate. However, knowledge about the role played by dominant species in the process of shaping their habitat within post-industrial ecosystems is still limited. We aimed to assess the impact of four dominant species (Calamagrostis epigejos, Daucus carota, Poa compressa and Tussilago farfara) on soil abiotic and biotic properties, and to detect differences in species and functional composition of the vegetation types studied. We hypothesized that (1) dominant species of higher mean biomass cause lower aboveground biodiversity and (2) dominant species of higher mean biomass have a higher impact than the others on soil properties. We measured soil chemistry (TOC, N, P, K, Na, Mg content, EC, pH and enzyme activities) as well as biomass, species diversity and functional diversity of vegetation on 15 study plots (28.3 m2) for each species studied. The DCA analysis revealed a clear distinction between the patches dominated by studied species. Vegetation patches dominated by Calamagrostis epigejos were correlated with amount of biomass, canopy height CWM and specific leaf CWM. Patches dominated by Daucus carota were related to the light requirements (EIV-L), Total Organic Carbon (TOC) and K content. The vegetation patches dominated by Poa compressa were related to dehydrogenase activity, higher Mg content and species richness of the vegetation patches. The highest TOC content was recorded for T. farfara substrates, and the lowest for C. epigejos substrates. The content of potassium does not differ statistically significantly in the substrates from sites dominated by D. carota and P. compressa. The highest values of Mg content were recorded for D. carota and were statistically different from Poa compressa sites, while the higher phosphorus content (statistically significantly different) was recorded for patches dominated by T. farfara and P. compressa. Despite our assumptions, the species with the highest mean biomass (Calamagrostis epigejos) did not cause lower species or functional diversity. In contrast, Tussilago farfara has the highest impact on postindustrial site habitats on coal mine heaps, as extreme values of four soil substratum parameters were recorded on these plots. This species also decreased both species and functional diversity of vegetation. The knowledge about relationship existing between plants (aboveground vegetation) and soil organisms seems important in order to undertake suitable reclamation measures and to restore variety of functions as well as to create diverse vegetation based on native species.

中文翻译：

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优势植物物种是否会影响采煤后弃渣堆的基质和植被组成？

摘要 优势种影响植被的种类和功能组成以及基质的土壤性质。然而，关于优势物种在后工业生态系统中塑造其栖息地的过程中所发挥的作用的知识仍然有限。我们旨在评估四种优势物种（Calamagrostis epigejos、Daucus carota、Poa compressa 和 Tussilago farfara）对土壤非生物和生物特性的影响，并检测所研究植被类型的物种和功能组成的差异。我们假设 (1) 较高平均生物量的优势物种导致较低的地上生物多样性和 (2) 较高平均生物量的优势物种对土壤性质的影响比其他物种更大。我们测量了土壤化学（TOC、N、P、K、Na、Mg 含量、EC、pH 值和酶活性）以及生物量、物种多样性和植被功能多样性在 15 个研究地块（28.3 平方米）上的每个研究物种。DCA 分析揭示了由研究物种主导的斑块之间的明显区别。以 Calamagrostis epigejos 为主的植被斑块与生物量、冠层高度 CWM 和特定叶片 CWM 相关。以胡萝卜为主的斑块与光照要求 (EIV-L)、总有机碳 (TOC) 和钾含量有关。以早熟禾为主的植被斑块与脱氢酶活性、较高的镁含量和植被斑块的物种丰富度有关。T. farfara 底物的 TOC 含量最高，而 C.epigejos 底物的 TOC 含量最低。钾含量在来自 D. carota 和 P. compressa 占优势的位点的基质中没有统计学显着差异。对于 D. carota 记录了最高的 Mg 含量值，并且在统计上与 Poa compressa 站点不同，而在以 T. farfara 和 P. compressa 为主的斑块中记录了较高的磷含量（统计上有显着差异）。尽管我们做出了假设，但平均生物量最高的物种 (Calamagrostis epigejos) 并没有导致较低的物种或功能多样性。相比之下，Tussilago farfara 对煤矿堆上的后工业遗址栖息地的影响最大，因为在这些地块上记录了四个土壤基质参数的极值。该物种还降低了植被的物种和功能多样性。