Cropland Reclamation

Dunker, R. E.; Barnhisel, R. I.; Darmody, Robert G.; Daniels, W. Lee

doi:10.2134/agronmonogr41.c13

Cited by 3 publications

(3 citation statements)

References 44 publications

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“…Compaction can occur at the soil surface or deeper in the soil profile (Batey, ), but varies with soil type and texture (Alakukku, ). Soil compaction can result in higher bulk density, reduced soil structure, lower porosity, and reduced infiltration rates and water holding capacity (Indorante et al ., ; Thurman & Sencindiver, ; Dunker & Barnhisel, ; Shukla et al ., ). This leads to higher resistance to root penetration and reduced root elongation (Fehrenbacher et al ., ; Thompson et al ., ; Chong & Cowsert, ) that can be further exacerbated by low soil organic matter (SOM).…”

Section: Introductionmentioning

confidence: 99%

Belowground Attributes on Reclaimed Surface Mine Lands over a 40‐year Chronosequence

et al. 2017

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Reclamation following mining activities often aims to restore stable soils that support productive and diverse native plant communities. The soil re‐spread process increases soil compaction, which may alter soil water, plant composition, rooting depths, and soil organic matter. This may have a direct impact on vegetation establishment and species recruitment. Seasonal wet/dry and freeze/thaw patterns are thought to alleviate soil compaction over time. However, this has not been formally evaluated on reclaimed landscapes at large scales. Our objectives were to (1) determine soil compaction alleviation, (2) rooting depth, and (3) spatial patterns of soil water content over a time‐since‐reclamation gradient. Soil resistance to penetration varied by depth, with shallow compaction remaining unchanged, but deeper compaction increased over time rather than being alleviated. Root biomass and depth did not increase with time and was consistently less than the values in the reference location. Plant communities initially had a strong native component, but quickly became dominated by invasive species following reclamation, and soil water content became increasingly homogeneous over the 40‐year chronosequence. Seasonal weather patterns and soil organic matter additions can reduce soil compaction if water infiltration is not limited. Shallow and strongly fibrous‐rooted grasses present in reclaimed sites added organic matter to shallow soil layers, but did not penetrate the compacted layers and allow water infiltration. Strong linkages between land management strategies, soil properties, and vegetation composition can advance reclamation efforts and promote heterogeneous landscapes. However, current post‐reclamation management strategies are incompletely utilizing natural seasonal weather patterns to reduce soil compaction. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Belowground Attributes on Reclaimed Surface Mine Lands over a 40‐year Chronosequence

et al. 2017

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“…The RMS are pedogenically young soils, developing on anthropogenically altered landscape [9]. Compared with undisturbed soils, the reclaimed soils have higher bulk density, higher rock content, poorer structure, lower porosity, lower water holding capacity, lower infiltration rates, and slower hydraulic conductivity [10][11][12][13]. Evaluation of the effects of past-reclamation land uses on physical and chemical properties, and the roles of soil water content and its dynamics on mine soil reconstruction helps to identify suitable land uses and soil water management for RMS managers.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of δD and δ18O of Reclaimed Mine Soil Water Profile and Its Source Water Bodies in a Coal Mining Subsidence Area with High Groundwater Level—A Case Study from the Longdong Coal Mining Subsidence Area in Jiangsu Province, China

Chen

2020

Water

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Coal mining, as one of the key drivers of land degradation worldwide, caused land subsidence problems. In this study, we conducted experimental research to explore the reclaimed mine soil (RMS) water dynamics and its sources in relation to reclaimed land use types using stable water isotopes in the Longdong coal mining area with high groundwater level in east China. We collected water samples seven times in 2017 from all of these water bodies (precipitation, surface waters (river water and water from subsidence pits (WSP)), groundwater and soil water). Our main findings are three fold: (1) the values of slope and intercept of the local meteoric water line of Craig (LMWL) of precipitation for the study area are higher than the global meteoric water line of Craig (GMWL) because of the humid monsoon climate zoon, and the values of δD and δ18O of surface waters and soil water and groundwater deviated from LMWL to some extent with a range of 5–30%, and the D and 18O of precipitation and the surface waters have higher seasonal variation than groundwater; (2) the values of δD and δ18O of RMS for the whole soil profile (0–100 cm) are lower than that of precipitation and have obvious seasonal variations and great fluctuation in the topsoil (0–30/40 cm) and decrease at depth (30/40–70 cm) and stable in deep soil layers (below 70 cm deep); (3) the RMS with forest and crop enhanced water infiltration capacity and soil water mixing strength compared with the waste RMS, so establishment of forest and crops should be encouraged in the RMS; (4) the main sources of topsoil (0–30 cm for crop and 0–40 cm for forest) of RMS are precipitation through infiltration, the main supply for deep soil water (below 70 cm deep) is groundwater, and the soil water for the middle deep soil layers (30/40–70 cm) is mainly from mixing sources of precipitation, groundwater, and river water through pant root water absorbing and groundwater upshifting.

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“…Revegetation is the most documented and widely used method for rehabilitating mine dumps because it is relatively more practical and economic (Dowo et al, 2013;Young, 1988). It usually involves addition of neutralising, inorganic fertilisers or organic amendments (Chiu, Ye, & Wong, 2006;Dunker & Barnhisel, 2000;Mulizane et al, 2016;Mendez & Maier, 2008;Mulizane et al, 2005;Muñoz et al, 2016;Nyakudya et al, 2011). However, application of these amendments may be a potential source of emissions of N 2 O, a key greenhouse gas (Dutta et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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

2017

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Revegetation accelerates soil fertility improvement and enhances biodiversity on mine dumps. The objective of the study was to determine the status of edaphic conditions; aboveground carbon stocks; and plant diversity. The study was conducted on nickel tailings dump revegetated with Senegalia polyacantha aged 8, 9, 10 and 11 years in Zimbabwe. Results showed high bulk densities and pH values; low organic carbon; deficiency in K; and toxic levels for Ni and As implying that the tailings materials are still marginal for vegetation establishment. Limited presence of woody species suggests that the substrate is not yet suitable for colonization by such species. Copyright © 2017 John Wiley & Sons, Ltd.

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Cropland Reclamation

Cited by 3 publications

References 44 publications

Belowground Attributes on Reclaimed Surface Mine Lands over a 40‐year Chronosequence

Belowground Attributes on Reclaimed Surface Mine Lands over a 40‐year Chronosequence

Characteristics of δD and δ18O of Reclaimed Mine Soil Water Profile and Its Source Water Bodies in a Coal Mining Subsidence Area with High Groundwater Level—A Case Study from the Longdong Coal Mining Subsidence Area in Jiangsu Province, China

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

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