Assessment of selenium pollution in agricultural soils in the Xuzhou District,Northwest Jiangsu, China

Xuzhou City is an important base for coal production and coal-fired power. To evaluate selenium contamination in this area, we sampled agricultural soil, soil profile, irrigation water, bedrock, coal, fly ash, paddy rice, and vegetables from the north of Xuzhou City, and determined their selenium contents. The background level of selenium in the soil profile was 0.08 mg/kg. The selenium concentrations in agricultural soils and irrigation water were in the range of 0.21-4.08 mg/kg and 0.002-0.29 mg/L, respectively. Soils with high selenium content were located closely to coalmines and power plants. The average selenium concentrations in coal and coal fly ash were 5.46 and 2.81 mg/kg, respectively. In contrast, the concentrations of selenium in bedrock and in the soil profile were very low. These results imply that the high selenium level in agricultural soils is mainly caused by anthropogenic activities, rather than by parent material. The arithmetic mean of selenium concentration in paddy rice was 0.116 mg/kg, and in cabbage was 0.05 mg/kg. The selenium concentration in rice was positively correlated with total selenium concentration in soil, suggesting that selenium in soil is readily transferred into the crops. Furthermore, the estimated dietary intake （88.8 μg） of selenium from paddy rice and cabbage exceeds the recommended dietary allowance （55 μg）. Therefore, there is a potential health risk from consumption of local staple food in the study area.

Spatial Pattern and Regional Types of Rural Settlements in Xuzhou City,Jiangsu Province,China

This paper principally focuses on the morphological differences,spatial pattern and regional types of rural settlements in Xuzhou City of Jiangsu Province in China.Using satellite images of Xuzhou City taken in 2007 and 2008 and models of exploratory spatial data analysis(ESDA) and spatial metrics,the paper conducts a quantitative analysis of the morphological pattern of rural settlements,and finds significant characteristics.First,rural settlements in Xuzhou City are significantly agglomerated in terms of their spatial distribution;meanwhile,there is significant variation in the geographical density distribution.Second,the scale of rural settlements in Xuzhou City is larger than the average in Jiangsu Province,and the histogram of the scale data is more even and more like a gamma distribution.There are a significant high-value cluster in the scale distribution,and local negative correlation between the scale and density distribution of rural settlements in Xuzhou City.Third,the morphology of rural settlements in Xuzhou City shows relative regularity with good connection and integrity,but the spatial variation of the morphology is anisotropic.Finally,according to the characteristics of density,scale,and form of rural settlements,the rural settlements of Xuzhou City are divided into three types:A high-density and point-scattered type,a low-density and cluster-like type and a mass-like and sparse type.The research findings could be used as the scientific foundation for rural planning and community rebuilding,particularly in less-developed areas.

Teffichthys wui sp. nov., a new perleidid fish from the Early Triassic of Jiangsu and Anhui, China

Perleididae is a group of stem neopterygian fishes known only from the Triassic.Here,we report the discovery of a new perleidid,Teffichthys wui sp.nov.,based on six well-preserved specimens from the late Smithian(Olenekian,Early Triassic)marine deposits of Jurong,Jiangsu and Chaohu,Anhui,China.This new discovery documents the third and youngest species of Teffichthys,which is slightly younger than the Dienerian(Induan)T.elegans from Guizhou and the early Smithian T.madagascariensis from Madagascar.The new species shows diagnostic features of Teffichthys(presence of a spiracular,38-41 lateral line scales,and no more than three epaxial rays in the caudal fin)but differs from T.madagascariensis and T.elegans in some autapomorphies(e.g.,a horizontal opercle/subopercle contact and smooth scales with a nearly straight posterior margin).The diagnostic features for the genus Teffichthys and the family Perleididae are emended based on detailed comparisons of the new taxon with other perleidids.The phylogenetic relationships of perleidids with other stem neopterygians are discussed using a cladistic approach,and the results provide new insights into the phylogeny and classification of main stem neopterygian clades.

Top 10 Tourism Routes for Visit Jiangsu and Discoverthe Charm of Jiangsu

Jiangsu thrives by sea.Starting from China's Migratory Bird Sanctuaries along the Coast of the Yellow Sea-Bohai Gulf(Phase I),a World Natural Heritage site,the travel line recommended by Nanjing Zhongbeiyouhao International Travel Service Co,Ltd.crosses coastal cities such as Yancheng,Nantong and Lianyungang,highlighting openness and inclusiveness of Jiangsu.

Top 10 Tourism Routes for Visit Jiangsu and Discover the Charm of Jiangsu

CHARM OF JIANGSU City of literature&City of Gastronomy CHARMOF JIANGSU Beauty of Ecology and Food City of Literature The route recommended by CiTs Hong Kong highlights culinary delights and hot springs.With the theme of rivers,lakes,seas,and springs,the course selects three cities:Nanjing known as the City of Literature and YangZhou and Huai'an both named at the City of Gastronomy.

Top 10 Tourism Routes for Visit Jiangsu and Discover the Charm of Jiangsu

Route designed by Bai Yiming Written by Elvira Miao,Yan Yuejia,Liu Qiyin and Zhang Jiajie.Showcasing the history,culture,scenic spots and natural scenery in charming Jiangsu,the route recommended by tourism expert Bai Yiming aims to provide detailed travel tips for foreign tourists,especially backpackers.

Distribution of benthic macrofaunal communities in intertidal flat under hydrodynamic influence:a case study of Jiangsu coast,East China

To identify the distribution pattern of macrofaunal assemblages of the Dafeng intertidal flats in response to hydrodynamic and sediment dynamic processes in the northern Jiangsu coast,East China,macrofauna sampling and hydrodynamic observations were carried out simultaneously across the mud flat,mixed mud-sand flat,and silt-sand flat of the intertidal zone in June 2018.Results show that there was a clear zonal distribution pattern of the macrofaunal communities,as is controlled by local hydrological and sedimentary environments.Principal component analysis(PCA)revealed three types of intertidal area in terms of hydrological and surficial sediment parameters.Similarly,three distinct groups of the macrofaunal communities,i.e.,mud flat,mix mud-sand,and silt-sand groups,were recognized at similarity level of 24%based on the CLUSTER analysis in similarity profile(SIMPROF)test.Correlation analysis upon best variables stepwise search(BVSTEP)indicated the importance of the hydrodynamics(e.g.,water temperature and salinity,tidal duration,flow speed,suspended sediment concentration,and wave height)in the differentiation of macrofaunal communities with different taxonomic classes over the intertidal zone.Therefore,macrofaunal assemblages,similar to hydrology and surficial sediment,have a unique zonation pattern.Small-sized deposit feeders adapt better to low energy environments,thus dominated the upper part of the intertidal flat,whilst the heavy and large-sized filter feeders and deposit feeders were dominant over the middle and lower parts.The hydrodynamic and sediment processes cause biota-niche separation,which affected the biological processes across the intertidal flat.

Classification and Spatial Pattern of Rural Multifunction from the Diversify of Construction Land Use:Taking Tongshan District of Jiangsu Province as a Case Study

The development of rural area in suburban(RAS)is comprehensively influenced by the mixed processes of non-farming,local urbanization and rural industrialization and has distinctive multifunctional features on the socioeconomic and resource utilization.Multifunctional reconstruction in the RAS is mainly manifested by changes in the quantity and structure of the construction land use(CLU).We took Tongshan District of Jiangsu Province as the study case.Following the logic of identifying,clustering,and diagnosing,we assessed the functional features of CLU and analyzed the differentiation of the scale and structure of CLU in RAS,with the aim of identifying the types and characteristics of multifunctional development in these regions.This study found that:1)typical RAS were experiencing multifunctional space reconstruction,and their multifunctional value was emerging and highlighted.The CLU was rapidly expanding,and the types of CLU were evolving from single to multiple uses;2)based on the dominant function of diverse rural CLU,we classified RAS into five types,dominated by the following functions,respectively:commercial services,industrial production,residential living,basic support and public service;3)according to the dominant function and spatial pattern,the development types of RAS were classified into agricultural service,comprehensive services,and integrated industries service,showing a circular spatial pattern from the suburbs to distant suburbs.The results can provide policy implication by creating new development impetus from rural multifunction perspective to promote the RAS revitalization.

Enterohemorrhagic Escherichia coli O157:H7 — Xuzhou City, Jiangsu Province, China, 2001–2021

Escherichia coli(E.coli)that produce Shiga toxin or verocytotoxin is commonly known as Shiga toxinproducing E.coli(STEC)or verocytotoxin-producing E.coli(VTEC).Hemorrhagic enteritis(HC),caused by foodborne zoonotic pathogen enterohemorrhagic E.coli(EHEC)O157:H7,was first reported in the United States in 1982 and has since caused outbreaks of human infections in various countries such as Canada,Japan,and China.In China,the pathogen was isolated from the feces of patients with diarrhea in Xuzhou City,Jiangsu Province in 1986.It later caused an outbreak in Xuzhou and adjacent areas from 1999 to 2000(1).Measures that included investigation of diarrhea patients,identification of the pathogen,and clearing epidemiological characteristics were implemented to control the spread of the disease.Subsequently,a surveillance program was reformulated in 2001 in Tongshan District,Xuzhou City based on the national O157:H7 surveillance program and the reality of Jiangsu Province.The program included 18 towns for diarrhea patients and food surveillance,and 3 major animal farming towns for animal surveillance.The program has led to changes in the detection rates and virulence genes of the strains.In this study,we analyzed O157:H7 surveillance data from 2001 to 2021 to predict possible transmission risks.

Path of Rural Vitalization Based on Coupling Perspective of Township Construction and Resource Environment in Jiangsu Province,China

Recently,the field of rural vitalization has received extensive research attention.However,only few studies have proposed an approach to rural vitalization from the coupling perspective of township construction and the resource environment.Taking Jiangsu Province of China as the study area,we constructed index systems of township construction function types and resource environments.Based on 875 township study units in Jiangsu,we characterized the township construction function type and resource environment and analyzed the dynamic process of their coupling from 2005 to 2017.The results are as follows:1)the townships of planting and breeding types in Jiangsu were mainly distributed in northern and central Jiangsu;the townships of business travel,industry,and integrated types were mainly distributed in southern Jiangsu;and the townships of ecological type were irregularly distributed throughout Jiangsu.2)Resource environment factors and township construction function types in Jiangsu clustered based on their location with some overlap.3)Spatial variability in the degree of coupling level between township construction and the resource environment in Jiangsu was not apparent,and low coupling levels accounted for most of the study units.The sum of the number of medium and high coupling townships in southern,central,and northern Jiangsu was roughly equal,and the coupling level between township construction and the resource environment in southern Jiangsu evolved remained unchanged,whereas that in the central and northern Jiangsu became imbalanced.4)In Jiangsu,township construction was mainly constrained by water resources,and the constraint parameters gradually increase.Large variability in resource environment constraint was observed in northern,central,and southern Jiangsu for different township construction function types.Based on these findings,we proposed the implementation of targeted rural vitalization strategies.

Enjoy the Smile of the Yangtze River During ‘Jiangsu Overseas Promotion Week’

From May 13 to 19,2023,the"2023 Yangtze River Tourism Overseas Promotion Season"launched"Jiangsu Overseas Promotion Week",presenting wonderful programs such as the video exhibition"TheYangtze River·Smile"and the Charm of Jiangsu photo exhibition to the global public.

Jiangsu Niupai:Worldwide well-known shedding brand for weaving industry

National Specialized and New “Little Giant” Enterprise, National High & New Technological Enterprise, Jiangsu Famous Trademark Enterprise, Jiangsu Provincial Research Center of Loom Shedding Engineering Technology and Jiangsu Provincial Enterprise Technology Center. Jiangsu Niupai Machinery & Electronics has passed internationally recognized Quality Management System Certiflcate of ISO9001, certifled by SGS.

Contrast and Fusion: The Role of Regional Culture in Shaping Jiangsu Paper-Cut Art

The Chinese paper-cut art,first recorded in the Wei,Jin,and Southern and Northern Dynasties(220 AD-589 AD),has witnessed the changes of times,yet it still retains its artistic vitality.Chinese papercuts can be divided into two schools:the northern and the southern.Jiangsu,located in the region of the Yellow River and Huai River,is the geographical dividing line between those two schools.Therefore,in Jiangsu Province,not only the rough northern art form(such as in Xuzhou papercut)but also the graceful southern art form(such as in Jintan papercut)is evident.In addition,the unique combined paper-cut style(such as in Yangzhou and Nanjing papercuts)can be appreciated here.Although several scholars have analyzed the artistic characteristics of Jiangsu papercut based on cultural background,very few have discussed the differences between the northern and the southern in terms of content,connotation,and style.Through literature review and collected works made by local craftsmen and inheritors of this tradition,this article aims to show readers the contrast and integration of papercuts in these four places under the influence of different cultural and economic backgrounds in order to better understand the role of regional factors in shaping the art form of papercuts in Jiangsu Province.Nowadays,with the change in people’s lifestyles,the living space of traditional papercuts has shrunk drastically,and its practicability in the past has faded.Instead,people are searching for and creating cultural and artistic value in museums,tourist attractions,and commodity transactions.Among them,some works have deviated from the cultural background of traditional paper-cut art.Therefore,this paper provides a basis for the current development of this art form in Jiangsu.

An Overview of Coilia ectenes in Jiangsu Section of the Yangtze River

Anchovies are migratory fish and adult individuals migrate in group from the sea into the river every year because of reproductive needs. TheYangtze River is the largest river in China, with rich food and fish species, hence, the Yangtze River would be an ideal habitat for growth and reproduction of anchovy. In this pa- per, based on fishing log data of anchovy in Jiangsu section of the Yangtze River, realted analysis was conducted in digital map using statistical software and GIS. From 2008 to 2011, the number of anchovy fishing vessels and fishing days in Jiangsu section remained stable, but the fishing volume and economic profit of single-vessel fluctuated constantly. This study provides references and advices for plan and management of anchovy fishery resource to administrative department.

Study on Main Chemical Compositions of Rice Straw in Three Different Areas of Jiangsu Province

[Objective] The research was aimed to study the main chemical composi- tions of rice straw in the three different areas of Jiangsu Province. [Method] The cellulose, hemicellulose, lignin and crude ash of rice straw collected in Huaian, Changzhou and Zhenjiang of Jiangsu Province during 2011-2013 were determined. [Result] The change trends of cellulose and hemicellulose in three arrears in differ- ent years were consistent. The cellulose content increased after falling, and hemi- cellulose content presented declining tendency. The lignin content of rice straw fist rose then declined in Huaian and Changzhou in different years, while it presented the declining tendency in Zhenjiang. The ash content of rice straw changed little and was all less than 65% in the three areas in different years. And the chemical composition of rice straw changed significantly in different years. [Conclusion] The research could provide basis for high added-value use of crop straw.

Numerical simulation of typhoon- induced storm surge on the coast of Jiangsu Province,China,based on coupled hydrodynamic and wave models

In order to facilitate engineering design and coastal flooding protection, the potential storm surge induced by a typhoon is studied.Using an unstructured mesh, a coupled model which combines the advanced circulation （ ADCIRC ） hydrodynamic model and simulating waves nearshore （ SWAN ） model is applied to analyze the storm surge and waves on the coast of Jiangsu Province.The verifications of wind velocity, tidal levels and wave height show that this coupling model performs well to reflect the characteristics of the water levels and waves in the studied region.Results show that the effect of radiation stress on storm surge is significant, especially in shallow areas such as the coast of Jiangsu Province and the Yangtze estuary.By running the coupled model, the simulated potential flooding results can be employed in coastal engineering applications in the Jiangsu coastal area, such as storm surge warnings and extreme water level predictions.

Analysis on Superior Features and Development Value of Water Tourist Resource in Jiangsu Province of China

In view of the fact that water resource had been taken as the focus of tourism development in Jiangsu Province, the paper had analyzed superior features of water tourist resource in Jiangsu Province, and summarized geographic features and plentiful water resources in Jiangsu. It emphasized that water resource was large in amount and river flew through most cities; that water resource was widely distributed and national AAAAA and AAAA scenic areas (spots) with water resource spread all over the province; that water resource was diversified in types and it could be divided into reaches, natural lakes and pools, springs, waterfalls, river mouths and lake surfaces; that water tourist resource was high in taste, strong in function and high in overall quality; and that water resource played a distinct role in landscape structure, which could not only constitute the main feature in isolation, but also lend people the sense of beauty through multiple landscaping factors. Based on the comprehensive evaluation on superior features of water resource in Jiangsu Province, it had proposed practical value for water tourism development, which was providing reference for scientific tourism planning, offering tourists abundant tourist products, shaping tourism brand image with distinct personality, creating a new growth pole and enhancing the protection of water resource.

Study on the Tourism Facilities Construction in Agricultural Demonstration Zone——A Case Study of Southern Jiangsu Area

[Objective] To investigate and analyze the existing problems in the agricultural tourism facilities construction in southern Jiangsu area,and put forward the improvement measures so as to effectively promote the overall development of agricultural tourism and the construction of new rural area. [Method] Adopting questionnaire survey and analyzing the differences of tourism facilities. [Result] The overall satisfaction of tourists in tourism facilities is 47.2%,a basically satisfying level; the least satisfaction level is 31.8% in public sanitation facilities after the satisfaction in recreation and explanation facilities. [Conclusion] With experiencing the ecology and returning to the nature as characteristics,the construction of facilities should comply with the theme of agricultural tourism to demonstrate the characteristics of agriculture and the local area,and in the scale of planning,architectural style and subject selection also should follow this principle. Investigations about the tourists resources should be carried on,the construction and management of transportation,greening and public sanitation facilities should be proceeded effectively to attract tourists to stay or come again and to realize the sustainable development of agricultural tourism.

Energy-saving Architectural Designs for Relocation Residential Districts in North Jiangsu Province of China

By investigating present relocation residential districts for peasants whose houses are removed for the unified planning of rural areas in north Jiangsu Province, as well as residents' feelings about the environment of residential district, main architectural structures and energy consumption conditions, the indoor thermal environment, use of main heating and cooling facilities, residents' satisfaction on the acoustical and luminous environment, major space-enclosing structures and calculation of energy-saving designs are analyzed, and suggestions are given for the architectural design of relocation residential districts in the study area. It is stressed that the relationship between energy conservation and architectural layout, orientation, lighting, ventilation, selection of enclosing-structure materials, facade, color and style should be properly handled in the planning, and the focus is to control building orientation and shape coefficient, on the basis of which energy-saving designs of windows, exterior walls and roofs can be done. Energy consumption of present residential buildings is calculated and analyzed to bring forth new ideas to the energy-saving designs for relocation residential districts in north Jiangsu Province, and establish an architectural energy-saving system suitable for climatic and natural conditions of north Jiangsu to instruct the energy-saving designs of relocation residential districts in the study area.

Low-carbon Agriculture Development Models in Southern Jiangsu Province

[Objective] To investigate the appropriate low-carbon agriculture model in Southern Jiangsu Province. [Method] Through the analysis of regional features in Southern Jiangsu and several matured low-carbon agriculture development models at present, the low-carbon agriculture development modes suitable for Southern Jiangsu were investigated, and corresponding supporting measures for the development of the models were put forward. [Result] Low-carbon agriculture is the environment- friendly agriculture which achieves low emissions, low pollution, high efficiency and high-yield through efficient recycling of energy and resources and continuous im- provements on ecological environment. With a variety of development models, the specific development model for practical use should be determined according to the local conditions, and supported by corresponding supporting measures, to achieve the rapid development of low-carbon agriculture. [Conclusion] This study laid the foundation for the development of low-carbon agriculture model in Southern Jiangsu.