Edaphic Conditions, Aboveground Carbon Stocks and Plant Diversity on Nickel Mine Tailings Dump Vegetated with <i>Senegalia polyacantha</i> (Willd.) Seigler &amp; Ebinger

Mukaro, Edeth; Nyakudya, Innocent Wadzanayi; Jimu, Luke

doi:10.1002/ldr.2696

Cited by 13 publications

(9 citation statements)

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“…Therefore, many fast‐growing, indigenous, adaptive tree species, including D. sissoo , P. pinnata , L. leucocephala , A. indica , M. indica , and T. grandis , are considered for the restoration of various types of marginal and degraded lands. Besides, they can also offer various multipurpose benefits that include biomass or biofuel production, wood for furnishing, medicinal and aesthetic values, and different other value‐added products (Ahirwal & Maiti, 2016; Edrisi et al, 2020, 2021; Huy et al, 2018; Mukaro et al, 2017; Rahman et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Tectona grandis L.f. mediated restoration of marginal lands in Eastern Uttar Pradesh, North India

et al. 2022

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Tectona grandis L.f. has considerable potential to restore marginal and degraded lands as it offers multiple co-benefits during the restoration venture. It provides good quality wood for multipurpose use, including biomass for bioenergy and noninvasive traits. For this, aboveground biomass (AGB) was assessed along with testing the critical soil properties (soil physicochemical and biological properties) across different plantation sites during a 4-year study period (2015)(2016)(2017)(2018). The study suggested that the soil properties like bulk density, moisture content, pH, organic carbon, available nitrogen, phosphorus, and potassium have shown significant mean improvement in all planted sites collectively. These were improved by À0.21 g cm À3 , 0.68%, À0.68, 0.27%, 13.69 mg kg À1 , 11.77 mg kg À1 , 95.20 mg kg À1 , respectively, in an arid area (Mirzapur, i.e., M1, M2, M3, M4, M5, and M6 sites, representing a warm and tropical dry climate) from the unplanted control (CM1) during 2015-2018. Moreover, the microbial biomass carbon and dehydrogenase activity were significantly improved by 56.71 mg kg À1 and 6.92 μg TPF g À1 hr À1 , respectively, from CM1. Similar results were also observed in the semiarid areas of Varanasi, representing a humid subtropical climatic pattern (i.e., V4 and V5 sites) compared to the unplanted control in the (CV1). Furthermore, the AGB was found between 12.56 and 229.13 kg tree À1 , representing 5 and 30 years of plantation, respectively, in 2018. Reference sites (V1, V2,

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Section: Introductionmentioning

confidence: 99%

Tectona grandis L.f. mediated restoration of marginal lands in Eastern Uttar Pradesh, North India

et al. 2022

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“…During the 55 years from 1950 to 2005, about 10,869 geological disasters occurred in China's mining developments, with 4779 deaths and direct economic losses of about RMB 17.458 billion [6]. In particular, mine spoils are an important driver of environmental damage land degradation [7][8][9]. Hence, it is necessary to study the geological disasters in coal mining areas.…”

Section: Introductionmentioning

confidence: 99%

Erosion Failure of Slope in a Dump with Ground Fissure under Heavy Rain

Wang

et al. 2022

Water

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The dump, with the compact rock platform and high and steep loose slope that is formed during coal mining, is the most serious area of soil erosion in a surface coal mine. Ground fissures are a typical geological hazard in coal mining areas. However, the effect of ground fissures on soil erosion remains unclear. Rainfall experiments were conducted to determine the varying characteristics of wetting front, runoff and sediment production, and soil denudation rate, as well as the effects of ground fissures on these factors in a platform-slope system of a dump. Ground fissures could significantly enhance wetting front and soil erosion. Rill erosion was formed as the rainfall and runoff flushed the soil, which eventually developed into erosion gullies. Erosion failure modes with platform-slope systems in the dump could be divided into the surface erosion stage, fissure deformation stage, rill erosion stage, fissure collapse-rapid increase stage, and stable stage. Runoff power and flow shear stress had the greater influence on soil denudation rate, which indicated that erosion energy of concentrated flow had important influence on soil erosion. Moreover, shallow mudflow induced by rainfall was one of the forms of soil slope instability; it occurred in a short time with great soil erosion. Soil erosion in the dump with ground fissures was mainly shallow mudflow and rill erosion, resulting from the combined effect of hydraulic erosion and gravity erosion.

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“…Mine spoils are an important driver of environmental damage and land degradation, causing the disappearance of soil and vegetation; increases in erosion by wind and water; pollution of air, soil, and water; and general deterioration of the landscape ( Mukaro, Nyakudya & Jimu, 2017 ). Coal mining will result in different degrees of surface damage and deformation, causing ground fissures ( Yang et al, 2018 ; Zhang et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Determining the influencing factors of preferential flow in ground fissures for coal mine dump eco-engineering

Shao

et al. 2021

PeerJ

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Ground fissures (GF), appearing in front of dumps, are one of the most obvious and harmful geological hazards in coal mining areas. Studying preferential flow and its influencing factors in the ground fissures of dumps may provide basic scientific support for understanding the rapid movement of water and vegetation restoration and reconstruction in mining areas. Based on field surveys of ground fissures, three typical ground fissures were selected in the studied dump. The morphological characteristics of preferential flow for ground fissures were determined through field dye tracing, laboratory experiments, and image processing technology. The results indicated that the lengths of the three ground fissures ranged from 104.84 cm to 120.83 cm, and the widths ranged from 2.86 cm to 9.85 cm. All of the ground fissure area densities were less than 10%, and the proportion of ground fissure surface area was small in the dump. The maximum fissure depth was 47 cm, and the minimum was 16 cm. The ground fissure widths ranged from 0 cm to 14.98 cm, and the fissure width and fissure width-to-depth ratios decreased with increasing soil depth. The stained area was greater than 90% in the 0–5 cm soil layers of the three fissures, and water movement was dominated by matrix flow. The stained width decreased from 90 cm to 20 cm with increasing soil depth. The preferential flow was mainly concentrated on both sides of the fissure, which was distributed as a “T” shape. The preferential flow stained area ratios were 27.23%, 31.97%, and 30.73%, respectively, and these values decreased with increasing soil depth. The maximum stained depths of the preferential flow among the three fissures were different, and the maximum stained depth of GF II was significantly larger than that of GF I and GF III (P < 0.05). The stained path numbers of the three fissures ranged from 0 to 49. With increasing soil depth, the stained path number first increased and then decreased. The stained path widths of the three fissures ranged from 0 cm to 90 cm. With the increase in soil depth, the stained path width decreased. The stained area ratio was significantly positively correlated with ground fissure width, the ground fissure width-to-depth ratio, soil saturated hydraulic conductivity, soil organic matter, and sand content and was significantly negatively correlated with soil water content and clay content. The stained path number was significantly positively correlated with ground fissure width, the ground fissure width-to-depth ratio, soil saturated hydraulic conductivity and soil organic matter. The stained path width was significantly positively correlated with the ground fissure width-to-depth ratio, soil saturated hydraulic conductivity, soil organic matter and sand content and was significantly negatively correlated with clay content. Plant roots could significantly increase the stained area ratio, stained path number, and width and promote the formation and development of preferential flow.

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Edaphic Conditions, Aboveground Carbon Stocks and Plant Diversity on Nickel Mine Tailings Dump Vegetated with Senegalia polyacantha (Willd.) Seigler & Ebinger

Cited by 13 publications

References 61 publications

Tectona grandis L.f. mediated restoration of marginal lands in Eastern Uttar Pradesh, North India

Tectona grandis L.f. mediated restoration of marginal lands in Eastern Uttar Pradesh, North India

Erosion Failure of Slope in a Dump with Ground Fissure under Heavy Rain

Determining the influencing factors of preferential flow in ground fissures for coal mine dump eco-engineering

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