Effects of vegetation on runoff and soil erosion on reclaimed land in an opencast coal-mine dump in a loess area

Zhang, Ling; Wang, Jin Man; Bai, Zhongke; Lv, Chunjuan

doi:10.1016/j.catena.2015.01.016

Cited by 308 publications

(171 citation statements)

References 43 publications

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“…Around 48% of this area is occupied with agricultural land, growing wheat, maize, millet, oats, etc. [25,37].…”

Section: Study Watershedmentioning

confidence: 99%

“…FRST exceeds RNGE at soil protection. With developed roots and a thicker canopy and litter layers, forests have better water infiltration, surface soil protection, and surface runoff reduction, which will decrease soil erosion [25]. Due to the construction of terraces in the hilly area, the runoff and soil eroded from the agricultural land can be intercepted by the field ridge, which can also have a good effect on soil and water protection during the rest period.…”

Section: Impact Of Land Use Change On Spatial Sediment Yield Distribumentioning

confidence: 99%

“…The litter layers of forest will increase the surface roughness and the capacity of holding water. With developed roots, a forest can improve the soil structure and soil anti-erosion capability, leading to better water infiltration and reducing water and soil erosion [25]. Table 7.…”

Section: Impact Of Land Use Change On Spatial Sediment Yield Distribumentioning

confidence: 99%

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Estimation of Sediment Yield Change in a Loess Plateau Basin, China

Zhang

Karthikeyan

Zhang

et al. 2017

Water

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Soil erosion is one of the most serious land degradation problems and the primary environmental issue in the Loess Plateau region of China. To identify the critical sub-basins and assess the impacts of land use change and climatic variability change on soil loss, this study tested the feasibility of the Soil and Water Assessment Tool (SWAT) model on sediment load simulation in the upper Sang-kan (USK) River basin. Based on a land use map of 1986, the SWAT model (Scenario 0) was calibrated at a monthly step using climate data from 1979 to 1985; then it was validated using climate data from 1986 to 1990. The monthly sediment simulation results indicated that the model did not work as well as streamflow simulation, indicating lower NS (Nash-Sutcliffe Efficiency) and r 2 values of 0.68, 0.69 and 0.61, 0.59 for the calibration period and validation period, respectively. This model could perform well under relatively low rainfall events, but it underestimated or overestimated the sediment load under high rainfall events. Comparing the results of scenarios with different land use maps (year of 1986 vs. 2012) and climate periods (1979-1990 vs. 2001-2012), it can be concluded that: (i) extreme and severe erosion almost always happened in FRST (forest land) and RNGE (grassland) in the hilly area; (ii) long-term traditional farming weakens the soil anti-erosion capability of land, leading to higher soil erosion, while forest can improve the soil structure, enhance the soil anti-erosion capability, and reduce soil erosion; (iii) both land use change and climatic change have led to the sediment yield decrease in the USK basin. Acting as the major influencing factor, land use change contributed to about 64.9% of the sediment yield reduction in the USK river basin.

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“…Around 48% of this area is occupied with agricultural land, growing wheat, maize, millet, oats, etc. [25,37].…”

Section: Study Watershedmentioning

confidence: 99%

Section: Impact Of Land Use Change On Spatial Sediment Yield Distribumentioning

confidence: 99%

See 1 more Smart Citation

Estimation of Sediment Yield Change in a Loess Plateau Basin, China

Zhang

Karthikeyan

Zhang

et al. 2017

Water

Self Cite

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“…In addition to these impacts, in mine waste piles derived from coal processing (usually enriched in pyrite), the process of soil aggregation and structuring by the root system of cover crops can promote input of oxygen and water and increase the development of acid mine drainage in the reclaimed area (Quiñones et al, 2008;Campaner and Luiz-Silva, 2009;Costa and Zocche, 2009;Inda et al, 2010;Daniels and Zipper, 2010;Moura, 2014) Reclamation of a mined area should return a degraded ecosystem to a non-degraded condition, which may be different from the original environment (Ibama, 2011). In the case of constructed minesoils, recovery of the ecosystem occurs through revegetation by the addition of organic material and consequent improvements in soil physical, chemical, and biological properties, which should result in increased stability of aggregates and reduced erosion (Akala and Lal, 2001;Sourkova et al, 2005;Onweremadu, 2007;Zhao et al, 2013;Mukhopadhyay et al, 2014;Zhang et al, 2015). On the other hand, if soil properties are modified by the presence of plant roots (Gregory, 2006) the quality of these properties can also influence their development (Lima et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Reclamation of a Degraded Coal-Mining Area with Perennial Cover Crops

Pauletto

Stumpf

Pinto

et al. 2016

Rev. Bras. Ciênc. Solo

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Studies addressing the potential of grass roots in improving the structural quality of constructed minesoils are not frequent in the literature, although they are essential for understanding the re-establishment of soil functions in the environment. The objective of this study was to quantify the root attributes of the species Urochloa humidicola, Panicum maximum, and Urochloa brizantha and relate them to the physical properties of a constructed minesoil in reclamation of an area degraded by coal mining. The study was performed in a field experiment in a coal mining area located in southern Brazil. Soil samples were collected, five years after experiment installation, to determine bulk density, macroporosity, distribution of water stable aggregates expressed in different size classes, mean weight diameter of water stable aggregates, and organic carbon content, as well as for chemical characterization. Root sampling was performed by the monolith method to a depth of 0.30 m. Results confirm the hypothesis that the root system of the perennial grasses studied positively contributes to recovery of the constructed minesoil in the 0.00-0.10 m layer after 58 months of revegetation. The higher percentage of large aggregates, higher bulk density, and lower macroporosity in the subsurface indicate the presence of degraded layers, negatively influencing the development of the grass root system. Urochloa brizantha exhibited the largest root matter in the surface layer, influencing the breakdown of the large and cohesive aggregates, transforming them into smaller crumbly aggregates. In the 0.10-0.20 m layer, Urochloa humidicola showed greater volume and root length in relation to other species; nevertheless, changes in soil physical properties were not observed, showing that the time span of the root growth of the species was not sufficient to provide improvements in the subsurface layers.

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“…The success of assessing the achievement of reclamation is required by the decision-maker in a fast, cheap and easy ways. The previous studies [7][8], [10][11] show that the indicators being used to monitor the success of revegetation varied widely, depending on the mining system as well as the biophysical conditions of the premining regions. Although several researches on the assessment on the success of forest reclamation in ex mining area with their various indicators have been conducted, the assessment of forest reclamation and its relation to forest growth and productivity function that use spatial growing factors as variables is still limited.…”

Section: Information Required For Estimating the Indicator Of Forest mentioning

confidence: 99%