Heavy metal (HM) pollution is a severe and common environmental problem in mining area soil. It imperative to understand the micro ecological characteristics of soil for HM contaminated remediation. This study described effects level physical chemical parameters on microbial diversity. In this study, high-throughput sequencing technology was used diversity composition community. The groups were barren, exhibiting alkaline pH, low total nitrogen (TN), potassium (TK) according fertility...

Abstract China is the biggest emitter of greenhouse gases (GHGs) in world, and agricultural GHG emission accounts for nearly a fifth total China. To understand carbon absorption characteristics production systems those arid oasis areas, typical representative city northwestern China, Zhangye City, was selected study.The factor method used to analyze calculate changing dynamics whole system region (38,592 km 2 ) from 2010 2021.The results revealed that emissions during planting mainly come...

It is important to understand the changes in microbial properties of plant rhizospheres elucidate interaction between heavy metals and communities. In this study, high throughput sequencing method was used analyze effects on rhizosphere community structure autochthonous Salsola collina Jinchuan mining area. The operational taxonomic units (OTU) number species diversity, richness bacterial were higher than those bulk soil. Proteobacteria, Actinobacteria, Firmicutes major phyla, collina,...

In China, utilization and evaluation of territorial space have become national strategic issues. Evaluating the rationality urban, ecological, agricultural is significant in development provides a theoretical basis for optimization provincial space. The positioning Gansu Province as ecological environment safety barrier to protection northwest China. This study used entropy method evaluate 14 cities 2019, using 50 indicators Results reveal that these three spaces, most important influencing...

In the context of China’s commitment to “double carbon” goal, promoting agricultural carbon emission reduction is currently an important research topic. Assessing sequestration level crops has a positive impact on enhancing sinks and reducing emissions. The budget for planting arid oasis Jinchang, northwest China, quantitatively calculated from 2018 2020. average value total absorption by in Jinchang was greater than emissions past three years. 2020, highest (1,744,725 t CO2-eq), 102,641...

In order to evaluate the phytotoxicity of anionic surfactant sodium dodecyl sulfate (SDS), inhibition wheat seed germination was investigated. The effects SDS on antioxidant enzyme activities [catalase and gluthione reductase (GR)], protein, soluble sugar, proline in (Triticum aestivum L.) seedlings were investigated after 6 days stress. With increase concentration, root length inhibited markedly, protein content shoot decreased gradually. stress caused significant changes GR activity,...

Given the urgent need for self-cleaning capabilities in solar cells across various applications, achieving a high-performance coating through simple construction and low cost remains challenge. This study successfully developed highly transparent superhydrophobic by using straightforward one-step spraying process with hydrophobic vapor-phase SiO2, silicone resin, epoxy resin. The features nanoscale structures that enhance both its transparency properties creating rough surface at microscopic...

Abstract A catalytic method has been developed for the determination of trace amounts Ag+ in Triton X-100 micellar medium. The is based on effect silver(I) rate a ligand substitution reaction between potassium ferrocyanide and 4,7-biphenyl-1,10-phenanthroline (BPT). was followed spectrophotometrically at 536 nm by measuring induction period. Beer's law obeyed range 0–0.040 µg/mL apparent molar absorptivity 2.43 × 106 L mol−1 cm−1. Both influence variables interference coexistent ions were...

ABSTRACT A spectrophotometric method is described for the determination of lead(II) in mixed microemulsion. The microemulsion medium composed cetyl trimethylammonium bromide (CTMAB) and p-iso-octylphenoxy polyethoxyethanol (OP) used to improve sensibility determination. In Na2B4O7–NaOH buffer (pH 9.50), reagent 2,6,7-trihydroxy-9-(3,5-dibromo-4-hydroxyphenyl)fluorone (DBH-PF) reacts with form a 3 : 1 purple complex. Under optimal conditions, Beer's Law obeyed up at least µg/ml Pb2+ molar...

Abstract According to relevant standards and methods, ecological risk assessment source analysis of 7 heavy metals (Ni, Cu, Zn, Cr, Cd, Pb Hg) in the area Dongdagou Baiyin were carried out. The results showed that order average content soil sampling was Zn > Cu Cd Cr> Ni Hg. Among them, have got unacceptably high levels, moderately exceeded. coefficient variation Hg Ni> Cr; pollution characterized by compound pollution; potential Cu> Cr. comprehensive evaluation hazards metal...

Abstract In order to understand the influence of 750 kV power transmission and transformation project on electromagnetic radiation surrounding environment, data electric field intensity, magnetic intensity noise from substation equipment system in some areas Gansu Province were monitored analyzed. The results showed that near circuit breaker, switch reactance main producing high intensity. breaker is highest equipment, with average value 12.40 ± 1.25 kV/m, while area reactor. study could...

Nickel and copper, as high toxic heavy metals (HMs), are the most serious contaminants in Jinchuan mining area, China. In this paper, influence of combined HMs stress on growth widespread plant-S. salsa has been studied. The gradient Ni-Cu was set based local environment pre-experiment. Seed germination, growth, physiological characteristics S. were investigated by control test, its metal bioaccumulation capacity samples collected from field platform. promoted at lower concentration (≤40...

Abstract 11 soil samples with different depths were collected in Dongdagou, Baiyin city, and the contents correlations of Ni, Cu, Zn, Cr, Cd, Pb Hg investigated analyzed. The results showed that distribution content heavy metal was according order Zn > Cu Cd Cr Ni Hg. There are significant correlation between soil, compound pollution characteristics on revealed. These would provide theoretical direction scientific basis for risk assessment prevention Dongdagou area city.

Mulching practices have demonstrated the potential to increase crop yields and resource utilization efficiency. However, response of different crops with various growth stages mulching remains unclear, particularly in rainfed agroecosystem. Therefore, a two-year field experiment (2013–2015) (wheat, maize, potato) was conducted evaluate effects three treatments: straw strip (SM), plastic film (PM), conventional planting without as control (CK), on soil moisture temperature, evapotranspiration...

In August 2011, chrome pollution incident happened in Qujing County, Yunnan, China, which caused the attention of people all over world.In this paper, hazards for health, routines chromium residue and Cr-containing wastewater treatment process newest research progress--biological materials adsorption method, biological degradation urban sludge method were reviewed.Finally, innovative processing "reducing barriers" thoughts introduced. PrefaceIn August, Yunnan province,China, violated...

Five different land use types (desert, farmland, mining park, slag heap and tailing dam) were selected as variables around the Jinchuan Cu-Ni area in Jinchang, Gansu Province present study. The Atriplex canescens (Pursh) Nutt.’s rhizosphere bacterial abundance, diversity community composition examined taking advantage of High-throughput sequencing technology to discuss effect soil physicochemical properties on microbial structure. result indicated that phylum Proteobacteria Firmicutes was...