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The development of reconstructed woody vegetation on coal mine dumps during the trajectory of reclamation was explicitly investigated by means of a rehabilitation technique. However, limited information is available about the composition of herbaceous species during the ecosystem re-development on mine dumps. The present study attempted to assess t...
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Context 1
... total of 44 species of herbaceous plants belonging to 14 families were recorded from the plantation stand (Fig. 2). The maximum number of species (23) was recorded from the 17 th -yearold plantation stand of Tectona grandis (Fig. 3) while the 5 th -year-old stand of Albizia lebbeck showed the lowest number of species (9) (Fig. ...
Context 2
... potential than A. procera [Singh et al. 2004b]. However, the biodiversity development, at age 17 th of plantation stand, colonizing species under corresponding plantation were in the increasing order only in T. grandis (23) and A. procera (15) while decreasing in D. strictus (14) and A. lebbeck (9) from earlier plantation age (5 th -year) (Fig. ...
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Citations
... Zonal plant communities appeared to have not formed on the currently existing dumps. Despite the uniformity of processes of dump overgrowth, this process has zonal features due to environmental factors and usually the moisture distribution in the dumps (Kumar et al., 2020;Nugmanov et al., 2022a, b;Zhao et al., 2022). ...
Examining the overgrowth of dumps, techno-soils, and areas containing waste products of uranium mines is vital for understanding the dynamic features of vegetation cover in technogenic landscapes. The main aim of this study was to investigate variations in the plant species composition and their productivity in dumps and technological areas and the intensity of soil ionizing radiations under varying environmental conditions based on the Shantobe Uranium Deposit, Kazakhstan. The vegetation at the waste dumps and technogenic sites is in the early stages of syngenesis and is representative of pioneer and group-thicket communities. Adverse ecological conditions associated with intense sulfate salinization formation thrive at the technological sites. However, the floristic composition is illustrative of highly resistant species (Calamagrostis epigejos and Phragmites australis) and secondary species. Typically the formation of steppe zone plant communities of Kazakhstan does not occur in these sites. The productivity of the recultivated dump and banks of the former uranium mine is quite high at 120–150 g/m2, which matches the meadow-ruderal communities of Northern Kazakhstan. However, the lowest productivity of 30–37 g/m2 emerged in the non-recultivated and partially processed sulfuric acid heap leaching stacks containing uranium ore, which create exceedingly unfavorable conditions for the establishment of crop plants. Several plant species identified as self-seeding live in partially processed piles of sulfuric acid heap-leaching uranium ores with a sufficient level of resistance to survive in soil with high levels of sulfate-containing salts and ionizing radiation of 1200–1400 μR/hr. These facts can authenticate to consider the possibility of growing these plant species in the artificial grassing of uranium-containing dumps to create herbage.
... This might be due to slow growth rates and the low litterfall quantity under these plantations. However, T. grandis, a versatile species, cannot be ignored due to their high economic importance and higher rates of biodiversity development under plantations of this species compared to other native species (Kumar et al., 2020). ...
Overburden excavated during opencast mining has poorer soil properties due to non‐salvage and inversion of soil profiles. The soil properties of such overburden are often improved by the biological reclamation technique such as planting suitable plant species; however, the performance of species varies site‐to‐site. Therefore, this paper aims to evaluate the effects of woody plantations on coal mine spoil's physicochemical and biological properties. We synthesised the available data from previous studies conducted on 5‐year‐plantations in Singrauli coalfields of India. These plantations have monocultures of eight species, in which four were exotic (Acacia auriculiformis, Casuarina equisetifolia, Cassia siamea and Grevillea pteridifolia) and four were native species (Albizia lebbeck, Albizia procera, Dendrocalamus strictus and Tectona grandis). We compared the soil properties under exotic and native species plantations to evaluate the effect of species and origin. The Wilcoxon's test showed that the clay content (p = 0.000), ammonium‐nitrogen (p = 0.002), phosphate‐phosphorus (p = 0.000), and microbial biomass nutrients (C, N, and P; p = 0.000) were significantly higher under native plantations than the exotic plantations. Further, we observed a significant positive correlation (r = 0.86, p < 0.001) between soil organic carbon and microbial biomass carbon for native species. We also found that microbial biomass nutrients are negatively associated with nitrification rates and positively associated with nitrogen mineralisation rates. Overall, our study suggested that exotic species plantations are not as effective as native species in mine spoil rehabilitation. Thus, native species plantations should be promoted while restoring degraded coal mine habitats in a dry tropical environment. This article is protected by copyright. All rights reserved.
... Our recent study has investigated biodiversity reconstruction under plantation stands (Kumar et al., 2020). This study revealed that in terms of herbaceous diversity reconstruction, the stand of T. grandis permitted a maximum number of species development (17 spp.). ...
... Alpha diversity, beta diversity, and similarity indices were computed across all plantation stands. Our earlier publication at the current research site provides detailed information about the methodology of biodiversity estimation (Kumar et al., 2020). Therefore, in the present study, our primary emphasis is on analysing herbaceous biomass production beneath the same plantation stands where species diversity analysis was carried out. ...
... Perhaps, most of the Poaceae members have had better adaptability to face any harsh climate. Also, most of the members have been reported as a primary successor of naturally redeveloping mining areas (Singh et al., 1995;Dutta and Agrawal, 2003;Mudrák et al., 2010;Kumar et al., 2020). In our study, the dominance of grasses in all plantation stands indicates their ability to thrive in hostile coal mine habitats (Ekka and Behera, 2011). ...
The present study was conducted to examine the status of herbaceous biomass development under rehabilitated coal mine spoil by establishing indigenous woody species in India's northern dry tropical region. Since mining activities for coal and minerals are prime industrial activities in this region; therefore, through these activities, a significant size of dry tropical forest ecosystems is destroying at unprecedented rates. Thus, the primary objective of the present study was to understand the influence of planted woody species on herbaceous biomass development. Estimation of herbaceous biomass was accomplished once in 1995 and 2007 under plantation stand of four native woody species. Among planted woody species, maximum herbaceous biomass was quantified at the 5th-year stand of Tectona grandis and lowest at the 17th-year stand of Dendrocalamus strictus. Family Poaceae contributed the maximum in herbaceous biomass production across all plantation stands. A declining trend was observed in herbaceous biomass production as the age of plantation stand increases, reflecting the impact of stand characteristics such as woody species basal cover and canopy cover on herbaceous vegetation development. Herbaceous biomass was positively correlated with species diversity at both ages of plantation stands, emphasising the facilitative role of species for organic matter build-up in disturbed habitats. However, increased competition between herbaceous species for space, nutrients and decreased penetration of light through the closed canopy of planted woody trees significantly influences herbaceous diversity under plantation stand.
