
Hubei Province bentonite soil extraction regulations

Geotechnical properties and applicability of bentonitemodified
2023年6月1日 All the soilbentonite mixes fulfilled these primary criteria (Sand/Gravel 94%, Liquid Limits >3540%, Plastic Limits 13%–18%) Most significantly, engineered compacted clay liners (CCLs) must meet the requirements of low hydraulic conductivity (10 −7 Abstract: Both the chemical compositions and performance characteristics of the bentonite raw ores in Ezhou area of Hubei province and Honghuoshan area of Liaoning province were Performance characteristics of EZhou bentonite of Hubei province 2009年11月1日 Both the chemical compositions and performance characteristics of the bentonite raw ores in Ezhou area of Hubei province and Performance characteristics of EZhou bentonite of nutrients of urban soils from nine cities in Hubei province, China, and to assess how soil nutrient status is related to land use type and topography Soil nutrients were measured in 405 sites Soil Nutrient Assessment for Urban Ecosystems in Hubei,

Soil organic matter characteristics of four soil types
2024年10月18日 Soil organic matter (SOM) plays key roles in sloping land erosion control This study explores SOM content across Hubei Province, China, focusing on four soil types under various conservation strategies Field 2018年11月6日 This paper showed that soil available K extracted with cold HNO 3 could also be appropriate for paddy soils in Hubei Province, China, compared with that of NH 4 OAcK (Fig 4)Establishing grading indices of available soil potassium 2013年9月27日 The aims of this study were to characterize the available nutrients of urban soils from nine cities in Hubei province, China, and to assess how soil nutrient status is related to land useSoil Nutrient Assessment for Urban Ecosystems in 2020年10月26日 A field experiment was conducted in a semiarid region in northern China to evaluate the effects of bentonite soil amendment on field waterholding capacity, plant Effect of bentonite as a soil amendment on field waterholding

Spatial and temporal evolution analysis of ecological security
2024年5月1日 This research employs the Revised Universal Soil Loss Equation (RUSLE), whose formula is displayed in Table 6, to investigate the extent of SC in Hubei Province On 2023年9月11日 Bentonites are proposed to be used as buffers in highlevel radioactive waste repositories The elevated temperatures in repositories may, however, affect bentonites’ Chemical and mineralogical reactions of bentonites in 2020年2月3日 The number of lakes in Hubei Province is ordered on fourth in China following to Xinjiang, Tibet, and Qinghai It is the province with the most lakes in central China The lakes in Hubei Province are an important part of the lake group in middle and lower reaches of the Yangtze River (one of the two major natural lake groups in China)Shrinkage and protection of inland lakes on the regional scale: 2022年11月29日 SOC storage (SOCS) plays a vital role in global climate change Understanding the spatial pattern and features of soil organic carbon (SOC) and its influencing factors is important for increasing Characteristics of Soil Organic Carbon in Croplands

Soil Nutrient Assessment for Urban Ecosystems in
2013年9月27日 Descriptive statistics of soil properties from the 0– 20 cm layer in nine cities in Hubei province (n = 405) 2021年10月21日 Controlling soil erosion is beneficial to the conservation of soil resources and ecological restoration Understanding the spatial distribution characteristics of soil erosion helps find the key areas for soil control projects and optimal scale for investing in a soil and water conservation project at the lowest cost This study aims to answer the question of how the The Link between Landscape Characteristics and Soil Losses 2021年9月1日 Request PDF Spatial and seasonal variations of PAHs in soil, air, and atmospheric bulk deposition along the plain to mountain transect in Hubei province, central China: Airsoil exchange and Spatial and seasonal variations of PAHs in soil, air, and 2021年4月26日 Spatial variances of soil erosion modulus (SEM) of the typical mountainous and hilly areas in Hubei Province by the improved RUSLE of 2000, 2005, 2010, 2015 and 2019 +5Soil erosion assessment by RUSLE with improved P factor and its

Mine tailing extraction indexes and model using remotesensing
2019年8月2日 Southeast Hubei province is an important iron–copper production base in China, which has produced a large number of mine tailings from mining activities Although they contain a certain amount of iron or copper as secondary mineral resources, the mine tailings and related acid wastewater can lead to environmental pollution through sand blowing or seepage For Bulletin of Hubei Province (Wuhan 2022) showed that the area of soil erosion in Hubei Province was 3055043 km2, accounting for 1643% of the land area Therefore, it is particularly important to construct an effective evaluation system to identify the vulnerable areas of soil erosion in Hubei Province In this study, we select Hubei Province Evaluation of soil erosion vulnerability in Hubei Province of China 2021年3月18日 Purpose This study aims to investigate the dynamic changes over time in the immobilization efficiency of hydroxyapatite, bentonite, and biochar for Cd and Pb cocontaminated soil given the potential remobilization of immobilized heavy metals for longterm stabilized soils Materials and methods Hydroxyapatite, bentonite, and biochar were applied only once at 25% Immobilization of Cd and Pb in a contaminated acidic soil2021年7月19日 Heavy metal contamination in farmland soil is of great concern due to the threat to food security arising from the bioaccumulation of heavy metals in crops planted in contaminated soil, such as rice, corn, and vegetables Cd is the main contaminant in both paddy soils and rice The purpose of this study was to reveal the spatial distribution of 8 heavy metals (Cd, Cr, Ni, Distribution, source identification, and health risk assessment of

Spatial and seasonal variations of PAHs in soil, air, and
2021年12月15日 Hubei province is located in the central part of China, surrounded by mountains on three sides in the east, west and northeast, west and north, the middle is low, slightly open to the south of the incomplete basin The Jianghan Plain (JHP), named from the alluvium of the Yangtze and Hanjiang River, is located in southcentral Hubei Province2013年9月27日 Recent urban landscape vegetation surveys conducted in many cities in China identified numerous plant nutrient deficiencies, especially in newly developed cities Soil nutrients and soil nutrient management in the cities of Hubei province have not received adequate attention to date The aims of this study were to characterize the available nutrients of urban soils from Soil Nutrient Assessment for Urban Ecosystems in Hubei, ChinaHighlights in Science, Engineering and Technology GRET 2023 Volume 67 (2023) 272 trend Therefore, in the plain area along the Yangtze River, Cd content in the soil was stable to aAnalysis on the Sources of Soil Heavy Metal Cadmium Pollution in Hubei 2016年6月3日 The cultural background of Hubei Province is profound The hometown of Yan emperor, the first ancestor of the Chinese Nation is in Hubei Province Chu State in Spring and Autumn Period and Warring State Period created splendid Chu culture in over 800 years’ history The first rise of the 1911 revolution occurred in Wuhan, the capital of HubeiHubei Province

Performance characteristics of EZhou bentonite of Hubei province
Abstract: Both the chemical compositions and performance characteristics of the bentonite raw ores in Ezhou area of Hubei province and Honghuoshan area of Liaoning province were compared and analyzed The properties of these two kinds of bentonites were tested before and after Na + and Li + modifi cation The results show that the Ezhou bentonite ore possesses 2018年11月6日 This study aimed at correlating grain yield response data to soiltest K extracted with ammonium acetate, cold nitric acid, sodium tetraphenylboron and boiling HNO3 solution, based on 54 field trials conducted during 2011 to 2015 across 15 counties in Hubei province, China Soil testing is an important diagnostic tool for assessing cropavailable soil potassium Establishing grading indices of available soil potassium on paddy Hubei,province,Article 5,Hubei,province,government,The peoples government of hubei province,enhubei and stepped up the legislation of special projects such as soil, air, water resource, also creating two new ones since Hubei enacted China's first local regulation on lake protection in October 2012Hubei The peoples government of hubei province2023年9月21日 In this paper, researches on the sourcs of cadmum in soil of Hubei province were concucted Results of soil profile analysis showed that the accumulation of Cd to a certain extent in the surface Analysis on the Sources of Soil Heavy Metal Cadmium Pollution in Hubei

Farmland Suitability Evaluation Oriented by Non MDPI
2022年3月28日 Farmland is one of the key factors affecting national or regional food security, and farmland suitability evaluation can provide critical information for the spatial layout of farmland Previous studies have mainly focused on the role of natural factors in suitability evaluation, while ignoring the important influence of socioeconomic activities2024年3月13日 The contribution of biodiversity to the global economy, human survival, and welfare has been significantly increasing However, nature reserves have long been subject to a sequence of ecological environmental issues caused by human activities Therefore, quantitatively assessing the spatiotemporal evolution characteristics of habitat quality due to land use Spatiotemporal Evolution and Mechanisms of Habitat Quality inForest land is the carrier for growing forests It is of great significance to evaluate the forest land quality scientifically and delineate forestland protection zones reasonably for realizing better forest land management, promoting ecological Forest Land Quality Evaluation and the Protection 2019年7月4日 Taking no tillage technology, organic fertilizer application technology, and “straw return to soil” technology as an example, based on the survey data of 1105 farming households in Hubei Province, and by constructing a multivariate probit model, this study analyzed the impact of informal institutions and environmental regulations on farmers’ green production behaviorImpact of informal institutions and environmental regulations on

Vegetation Dynamics and Food Security against the
2023年1月10日 A series of ecological restoration projects have been proposed to solve ecological problems resulting from human activities The project of returning farmlands to forests, initiated in 1999, was the most widely 2012年4月20日 Hubei The people's government of hubei province,hubei,HUBEICHINA,enhubei This set of regulations is formulated in line with the related provisions of the Law of the Peoples Republic of China on the Administration of Entry and Exit of Foreigners and its rules of implementation to standardize the examination and approval Regulations on Examination and Approval of Permanent Residence HubeiS16 Figure S10 FTIR spectra of the solid products derived from the HG soil leachate after different times of UV irradiation The absorption bands at 3420 and 1630 cm−1 are due to the bending and stretching vibrations of O−H4 The absorption bands at 1418, 1080, 875 and 712 cm−1 are assigned to the vibrations of CO32− group57 The absorption band at 1032 cm−1 Huazhong Agricultural University, Wuhan, , Hubei Province2018年11月6日 However, this approach is not suited for routine soil test purposes because of the extra equipment, bench space, and time required to estimate K Soil K extraction with NaTPB is characterized by the formation of potassium tetraphenylboron (KBPh 4) precipitate, which reduces the concentration of K + in soil solution, thus facilitating the further release of K + from Establishing grading indices of available soil potassium on paddy

Hubei The peoples government of hubei province
As introduced, Hubei has reduced a total of 68 items charged by government departments since 2015, accumulatively alleviated 52 billion Yuan of social burden Hubei Province Price Bureau will keep on improving management system of the list of charges and adopt dynamic regulations2022年10月20日 The modern Huanghe Delta dates from 1855, when the mouth of the Huanghe River shifted north from the Yellow Sea to the Bohai Sea Beginning in the 1960s, dams were built upstream, reducing the water flux from 43 km 3 /y to 49 km 3 /y (Fan and Huang, 2008)Sediment discharge to the river mouth decreased dramatically from more than 1 Gt/y in the 1960s to Effects of Groundwater Extraction and River Regulation on 2023年12月1日 PDF The clay mineral bentonite has received a lot of attention for its potential to reduce the harmful effects of drought on soil health and Find, read and cite all the research you need on (PDF) Bentonite Impact on Soil Properties and Biological Activity 2014年9月12日 Thirty atmospheric dustfall samples collected from an industrial corridor in Hubei Province, central China, were analyzed for 16 USEPA priority polycyclic aromatic hydrocarbons (PAHs) to investigate their concentrations, spatial distributions, sources, and health risks Total PAH concentrations (ΣPAHs) ranged from 172 to 1317 µg/g and averaged 491 µg/g High Polycyclic aromatic hydrocarbons (PAHs) in atmospheric

(PDF) Mine tailing extraction indexes and model using remote
2019年8月2日 Southeast Hubei province is an important iron–copper production base in China, which has produced a large number of mine tailings from mining activities2023年10月18日 Materials and methods In this study, soil erosion in hilly areas of Hubei Province from 2000 to 2020 was quantitatively analyzed using the revised universal soil loss equation (RUSLE), and the Soil erosion sensitivity and prediction for hilly areas of 2023年11月27日 The proposed method was used to systematically evaluate the potential risk level of ANPSP of Yichang City, Hubei Province The potential risk of ANPSP in Yichang City was 1886% Highrisk areas account for 495% Potential Risk Identification of Agricultural Nonpoint 2021年9月1日 Soil erosion, a worldwide environmental problem, seriously threatens natural resources (Pimentel, 2006), agriculture (Robinson et al, 2017), and the ecological environment (Owens Collins, 2006)The increasing human activities exacerbate the risk of soil erosion, including excessive agricultural production, grazing, and forest destruction (Chuenchum et al, Soil erosion assessment by RUSLE with improved P factor and

Potential Reductions in the Environmental Impacts of Agricultural
2024年3月7日 Quantifying potential reductions in environmental impacts for multicrop agricultural production is important for the development of environmentally friendly agricultural systems To analyze the spatial differences in the potential reduction in nitrogen (N) use, we provided a framework that comprehensively assesses the potential of improving N use 2023年12月26日 To conduct a precise health risk assessment of heavy metals (HMs) in soil, it is imperative to ascertain the primary sources of potential health risks In this study, we conducted comprehensive measurements of HMs, specifically focusing on the accumulation of Cu, Cd, Sb, Zn, and Pb in local soil, which may pose threats to environmental quality To achieve our Sourcebased health risk assessment of heavy metal SpringerSpatial distribution of soil erosion in Hubei province based on deep learning WANG Shutao, SHI Mingchang, CHEN Chunyang, CHEN Jingtao School of Water and Soil Conservation, Beijing Forestry University, , Beijing, ChinaSpatial distribution of soil erosion in Hubei province based on 2021年5月1日 Hubei Province is located in central China within 108°21′42″E–116°07′50″E and 29°01′53″N–33°6′47″ N (Fig 2) It has a total area of 185,900 km 2 and contains 17 cities It constitutes a part of the key ecological zone of the Yangtze River and has a prominent natural endowment and ecological statusIs ecological protection and restoration of fullarray ecosystems

Impact assessment of Zeolite, Cabentonite and Biochar
2024年8月27日 Sequential extraction techniques help identify metal fractions in soil, with exchangeable forms being more accessible and active, while residual forms are less reactive (Prusty et al 1994) By leveraging biochar and understanding heavy metal chemistry in soils, effective strategies can be devised for mitigating environmental contamination and promoting Developing of Local Model From Soil Spectral Library qing 1, CHEN Songchao 2, ZHOU Minghua 3, LI Shuo 1* 1 Key Laboratory for Geographical Process Analysis Simulation of Hubei Province, Central China Hangzhou , China 3 Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Developing of Local Model From Soil Spectral Library With