Revised zoning method for environmental fragility evaluation to desertification in arid–semiarid areas: a case of Dousitu river basin

Published on Sep 1, 2021in Environmental Earth Sciences2.784
· DOI :10.1007/S12665-021-09819-9
Sen Xue , Chen Wang + 3 AuthorsYun Wu
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Abstract
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Abstract Underground mine designs typically try to avoid extraction beneath streams and rivers of any significant size, especially when the overburden rock thickness between the stream bed and the mine is thin. Potential issues with mining beneath streams include excessive groundwater inflow to the mine, weak ground (roof, floor, and pillar) conditions, horizontal stress effects, as well as stream loss and other potential adverse environmental effects. However, there are times when crossing bene...
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#1Xi Zhong (SYSU: Sun Yat-sen University)H-Index: 5
#2Ziwu Chen (SYSU: Sun Yat-sen University)H-Index: 2
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Abstract China exemplifies the serious and widespread soil heavy metal pollution generated by mining activities. A total of 420 soil samples from 58 metal mines was collected across Eastern China. Total and available heavy metal concentrations, soil physico-chemical properties and geological indices were determined and collected. Risk assessments were applied, and a successive multivariate statistical analysis was carried out to provide insights into the heavy metal contamination characteristics...
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#1J. Tormo (University of Zaragoza)H-Index: 2
Abstract Woody species play a key role in Stipa tenacissima steppes, they affect ecosystem functioning, facilitate establishment of other plants and increase plant richness. Among the mechanisms involved in facilitation, effect of litter on seed germination and seedling establishment is largely underexplored. We studied the properties of the litter layer under five woody species common in Stipa tenacissima steppes, and assessed its effect on the germination of seeds of two key species with contr...
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#1Xiangjun Zhou (WHU: Wuhan University)H-Index: 16
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Abstract Cyanobacterial inoculation can accelerate the formation of induced biological soil crusts (IBSCs) and is suggested as an effective strategy for desertification reversal. However, previous studies concerning the spatial distribution of IBSCs at the micro scale are insufficient. In this study, IBSCs distributed in microhabitats differing in slope aspect, slope gradient and plant cover were investigated to reveal the effects of microhabitats on soil properties and IBSC development. There a...
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#1Yun Wu (Jiangxi University of Science and Technology)H-Index: 7
#2Zhen Huang (Jiangxi University of Science and Technology)H-Index: 5
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Abstract This paper establishes an analytical model to study the influence mechanism of hydraulic fracturing around vertical wellbores under the unsteady seepage in hydrocarbon reservoirs, deduces the analytical solution of water pressure and hydraulic gradient of the model, and compares the law of water pressure and hydraulic gradient changing with time with the results of numerical simulation. The results confirm the accuracy of these analytical solutions. The variation laws of water pressure ...
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#1Mihály Kocsis (University of Pannonia)H-Index: 4
#2Attila Dunai (University of Pannonia)H-Index: 3
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ABSTRACTDuring our soil-specific drought sensitivity research, an aim of ours was to ascertain how drought, a stress factor caused by the lack of precipitation, affects soil fertility. We used the ...
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#1Shiliang Liu (SDU: Shandong University)H-Index: 6
#2Wenping Li (CUMT: China University of Mining and Technology)H-Index: 22
Last. Jianghui He (CUMT: China University of Mining and Technology)H-Index: 9
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Abstract Environmental engineering geological patterns (EEGPs) are the generalized manifestation of environmental engineering geology with the protection of phreatic water resources as the core, especially in mining areas with fragile eco-geological environment. Based on the formation mechanism of mining-induced EEGPs, with the aim of win-win between protection of phreatic water resources and exploitation of coal resources, this study presents a zoning method for EEGPs. Taking the Yushenfu minin...
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#1Shiliang Liu (SDU: Shandong University)H-Index: 6
#2Wenping Li (CUMT: China University of Mining and Technology)H-Index: 22
Abstract This research utilized the variable weight theory (VWT) and improved the matter-element extension model (MEEM) to conduct an indicators sensitivity analysis of environmental engineering geological patterns (EEGPs) related to underground coal mining. First, four types of EEGPs, i.e., basically unaffected model, gradually restored model after destruction, gradually deteriorated model and disaster model, were defined. Subsequently, 13 indicators were selected from different spheres. Then, ...
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#1Song Li (NU: Nanjing University)H-Index: 4
#2Fuqiang Liu (NU: Nanjing University)H-Index: 28
Last. Aimin Li (NU: Nanjing University)H-Index: 72
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Abstract Carboxymethyl cellulose/polyethylenimine hydrogel (CMC/PEI) was firstly prepared with a facile one-step method to enhance Cr(VI) removal. The sufficient hydrogen ions in double-network structure contributed to a high adsorption capacity for Cr(VI) (6.01 mmol g−1) especially under mild acidic condition (pH 5). Attenuated total reflection-Fourier-transform infrared (ATR-FTIR) spectroscopy in combination with X-ray photoelectron spectroscopy (XPS) confirmed that Cr(VI) was firstly removed ...
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#1Qiqing Wang (CUMT: China University of Mining and Technology)H-Index: 19
#2Wenping Li (CUMT: China University of Mining and Technology)H-Index: 22
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Abstract In arid and semiarid regions of northwest China, there are abundant shallow coal reserves throughout the region, yet during the mining process, the shallow water resources available are typically depleted due to the formation of fractures in the shallow subsurface. Water-preserved mining is the only option for coal mining in arid regions of northwest China. Based on the geological and hydrogeological conditions of the study area, this paper investigates the basic conditions and mechanis...
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