The source and formation characteristics of the Zhujiadun gas reservoirs in the Yancheng Sag, Subei Basin

The Yancheng Sag is a favorable exploration area in the Subei Basin. However, the key geological understanding of the natural gas source and reservoir formation characteristics of the sag is still controversial. Based on a set of organic geochemical experiments conducted on natural gas and associated condensate oil of the first member of the Funing Formation (E1f1) in well YCh5 and well data analysis, the oil-gas resources and reservoir formation model in the Zhujiadun gas reservoir in the Yancheng Sag, Subei Basin, were investigated. The results of this study are as follows. (1) The natural gas in the Zhujiadun gas reservoir is dry gas with high methane content, low heavy hydrocarbon content, and high maturity. The characteristics of carbon and hydrogen isotopes in the natural gas indicate that the natural gas is oil-cracked gas, which mainly originates from the source rocks of the Permian Qixia Formation. (2) The condensate oil from well YCh5 with a high degree of maturity has a high pristane/phytane ratio, low gamma-paraffin abundance, and low tricyclic terpene abundance, indicating a mixture of the Upper Paleozoic condensate oil and Cenozoic crude oil. The saturated and aromatic hydrocarbons have similar δ13C values to the Cenozoic continental crude oil. These features suggest two sources of condensate oil. (3) Oils generated from the source rocks of the Qixia Formation were cracked into highly mature gas after deep burial, which migrated along large faults into the sandstones of the E1f1 and K1t1 members. This type of reservoir was effectively preserved beneath the overlying mudstone cap rocks. Therefore, it can be inferred that a play fairway might occur in the eastern zone of the faults connected to the Paleozoic source rocks in the Yancheng Sag since this zone has similar petroleum geological conditions to well YCh5. Therefore, this zone is a favorable area for further exploration.

Influence of Artificial Cofferdam and Spartina alterniflora Expansion on Evolution of Suaeda salsa Marsh in Yancheng Coastal Wetland of East China

Suaeda salsa is an important local species in the intertidal beach of the Western Pacific coast. However,under the artificial cofferdam and Spartina alterniflora expansion,Suaeda marsh has degraded seriously. Therefore,using Yancheng Nature Reserve as a case study area,taking ETM+images in 2000,2006 and 2011 as the basic data sources,we revealed the evolution characteristics of Salsa marsh which was impacted. The research results are as follows. From 2000 to 2011,Salsa marsh area in the artificial area tempestuously degraded,decreasing by 87. 158%,more than 22% than those in the natural area. The landscape was fragmentized. Landscape polymerization degree index dropped from 95. 780 to 65. 455,more than 16% than those in the natural area. The mean patch area fell down to 21. 429 ha from 389. 333 ha,more than 11% that in the natural area. Compared to the steady change in natural conditions,the area was reduced by 118. 167 ha/a from 2000 to 2006,while during 2006-2011,it was only 51. 500 ha/a in artificial area. As for spatial change of landscape,in artificial area,the Salsa marsh centroid moved forward to the southeast with 666. 350 m,but that in natural area moved forward to the north with 1 042. 710 m from 2000 to 2006. From 2006 to 2011,the centroid moved forward to east and north respectively. Artificial cofferdam transformed the area into freshwater ecosystem,and meanwhile the freshwater was beneficial to Reed marsh. During 2000 to 2006,in the artificial area,539 ha Salsa marsh controlled by cofferdam transferred into reed marsh and aquaculture ponds,of which the transformation rate was nearly 4% higher than that in natural area. From 2006 to 2011,178 ha Salsa marsh was transferred into reed marsh,the transformation rate was 20% higher than that in natural area. With rapid spreading and strong competition of Spartina species,the coastal wetland has formed the pattern of " Salsa – Spartina marshes". From 2000 to 2006,in artificial area,15. 24% of Salsa marsh was transferred into Spartina marsh,of which the transformation rate was13% higher than that in natural area. And from 2006 to 2011,30. 07% Salsa marsh was replaced by the Spartina marsh in artificial area,the rate was almost 10% higher than that in the natural area.

Comparative Analysis on Activity Patterns of CG between Lianyungang and Yancheng

[Objective] The reseamh aimed to contrast and analyze CG activity rules in Lianyungang and Yancheng. [Method] By using lightning location data, basic characteristics of lightning activities in Lianyungang and Yancheng both located at the eastem coast of Jiangsu were analyzed and contrasted. [Result] CG characteristics in Uanyungang and Yancheng were same, and negative CG was dominant. Monthly change activity rule of CG basically presented single-peak distribution, and peak value appeared in August. Monthly change of the lightning was drastic, and high- occurrence period was both in summer. Daily change trend of CG in the two sites was consistent. High-occurrence period of the lightning was in af- temoon and early morning, and occurrence frequency of the lightning in the morning was less. Spatial distribution of CG in Lianyungang and Yancheng was very uneven. Lightning activity in Lianyungang mainly concentrated in northwest and southeast areas of Donghai County and western area of Guannan County. Especially in Donghai County, it was the area where lightning strike density was the maximum. Lightning strike activity in Yanchang was more concentrated, and mainly concentrated in the west, namely near Jiangying Town and Louwang Town. Distribution characteris- tics of CG intensities in the two sites were same. Waveform changes of the positive CG in the two sites were slower than that of the negative CG, and current intensity concentrated from ＋ 20 to ~ 50 kA. [ Conclusion ] By contrasting and analyzing lightning activity rules in Lianyungang and Yanchang, we could share and complement data in the two cities better, and serve for routine lightning prevention and early-warning better.

Driving Effect of Theme Cultural Tourist Destination Attributes on Tourists' Place Attachment: A Case Study of Yancheng City in Changzhou

From the perspective of man–land relationship, Yancheng City(ruins of Yancheng in the Spring and Autumn Period) as a typical theme tourist destination is selected to construct the structural model of driving effect of tourist destination attributes on tourists' place attachment, and carry out the empirical research. The results show that attributes of Yancheng City contain 4 dimensions, and tourists' perception of the attributes declines in the sequence "recreational and entertainment attribute→ attribute of culture of the Spring and Autumn Period→ attribute of landscapes and ruins→ attribute of humanistic concern"; the four-dimension attributes vary greatly in driving tourists' place attachment, recreational and entertainment attribute and attribute of culture of the Spring and Autumn Period have obvious positive driving effect, attribute of landscapes and ruins and attribute of humanistic concern have poorer driving effect; generally speaking, driving effect of tourist destination attributes on tourists' place attachment is demonstrated as "highlighted value functions of tourist destination attributes→‘predominant area' of tourists' perceptual experience→ obvious driving effect on tourists' place attachment" and "hysteretic value functions of tourist destination attributes→‘vulnerable area' of tourists' perceptual experience→ weakened driving effect on tourists' place attachment"; driving effect of the overall attributes of tourist destination on tourists' place attachment is to be further improved and optimized.

A Study on the Development of Cultural Tourism Industry in Yancheng

Culture is an essential condition for the rapid and healthy development of the tourism industry.However,tourism provides a platform for cultural exchange and communication,injecting a strong impetus to the development of the cultural industry.Under the background of the era that both culture and tourism industries have become national strategies,how to promote and realize the combination and interaction of culture and tourism industry is a practical problem that needs to be solved urgently.Based on taking Yancheng salt culture and seashore wetland ecological culture as the case analysis,this article hackles the integration advantages of Yancheng and tries to find out the deficiencies.On the basis of the evaluation and analysis between culture and the differences in the comprehensive development level of tourism industry,this paper discusses the characteristics and mechanism of the combination of culture and tourism industry,proposes a coordinated development pattern of culture and tourism industry,and on this basis provides the corresponding strategies and suggestions of this pattern in Yancheng.

Yancheng Develops Foreign-funded Enterprises

Yancheng City, once neglected by investors, has become the focus of foreign investment in recent years. Beginning in 1987 and to the end of 1993, Yancheng had set up 875 foreign-funded enterprises, making use of US$226 million in foreign capital—530 of them approved last year alone with foreign capital worth US$109 million. Those in operation rank among the most advanced foreign-funded enterprises in Jiangsu Province and the country.

乡村振兴视角下盐城市乡村民宿高质量发展策略研究

乡村民宿因其扎根于乡村的自然属性,获得了快速发展和不断升级,已成为助力乡村振兴的有效手段。得益于良好的发展基础,近年来盐城地区乡村民宿发展迅速,但还存在着发展层级差异大,供需两端不够匹配;滞后于国家标准,管理水平有待提高;缺乏集群效应,配套供给有待完善等问题。对此,建议加强顶层设计,统筹推进乡村民宿发展;强化标准管理,提升乡村民宿服务水平;实施联农带农,实现民宿乡村有机融合;注重宣传推介,打造乡村民宿立体品牌,以此推动盐城乡村民宿产业高质量发展。

2022-2023年江苏省豇豆区域筛选试验(盐城点)

为筛选适宜江苏省种植的高产、优质的豇豆新品种,2022-2023年承担了江苏省豇豆区域试验。盐城点两年的试验结果表明,13个参试品种中,苏豇17-35总产量最高,比对照增产29.29%,其次是帮达夏龙,比对照增产27.80%,第3名是盐豇5号,比对照增产26.19%。对照苏豇3号产量最低,其他12个参试品种都比对照有不同幅度的增产,综合性状优良,建议继续进行生产试验,进一步鉴定品种的丰产性和稳定性。

苏北盆地黄桥地区盐城组氦气成藏地质条件及富集规律

苏北盆地黄桥地区新近系盐城组天然气中He含量介于1.05%~1.40%,普遍高于工业品位,为壳—幔复合型氦气资源。目前,对于这种来源的氦气富集主控因素以及勘探目标评价的研究较为薄弱,为此,系统剖析了黄桥地区典型富氦气藏氦气成因、来源及圈闭特征,重点分析了幔源断裂对富氦气藏输导作用、盐城组圈闭条件的影响,提出了黄桥地区盐城组富氦气藏富集模式。结果表明:(1)黄桥地区南新街深大断裂在盐城组沉积时期持续活动,导致幔源物质上涌,伴随着火山活动及CO_(2)、N_(2)以及氦气沿断裂运移至浅层;(2)黄桥地区盐城组埋深为370~400 m,盐城组底部砂岩厚度约为40 m,上覆10~40 m泥岩,储盖组合有利,富氦气层由东往西尖灭;(3)黄桥地区盐城组整体为单斜构造,盐城组底部界面与下伏地层呈角度不整合,通过地震标定及解释,刻画出了富氦气层岩性—地层复合圈闭面积。黄桥地区盐城组富氦气藏具有断裂沟通地幔输导、砂岩储集、泥岩作为盖层、岩性—地层复合圈闭富集等特征,该认识对黄桥地区氦气有利目标评价具有重要意义。

苏北盆地盐城凹陷盐③断裂带构造演化及其控圈作用

盐(3)断裂带位于苏北盆地盐城凹陷中,断裂带及周边区域发生过多期伸展-走滑复合的构造演化,控制圈闭的时空有效性。为阐明这些构造圈闭对油气差异聚集的影响,需先明确盐(3)断裂带在各时期的演化过程,并研究构造变形对圈闭的控制作用。本文基于盐城凹陷高精度三维地震资料,揭示主要断层和周边褶皱的几何学形态和运动学特征;结合断距回剥法定量恢复断层分段生长过程,进一步利用古构造图分析各期次的褶皱变形规律,解析各期次构造演化性质以及控圈作用。结果表明,盐(3)断裂带经历3个主要演化阶段:(1)泰州—阜宁期(K_(2)t—E_(1)f_(4))NW向伸展控制盐(3)正断层西段孤立生长、东段发生软连接,此时主干断裂的控陷作用不明显,圈闭不发育;(2)阜宁期末发生短期快速的压扭作用,造成盐(3)断层再活动,同时形成一系列的NW向共轭剪切断层,此时沿着盐(3)断裂带形成了一系列的圈闭;(3)戴南—盐城期(E_(2)d-Ny)发生SN向东强西弱的伸展,控制盐(3)断裂带东部再活动,并对圈闭进行调整。整体而言,盐城凹陷的构造活动强度具有“早强晚弱,东强西弱”的差异性,随着研究区构造应力场的不断变化,圈闭的构造幅度、面积逐渐缩小,构造高点也逐渐往SW向转移。

非遗元素融入文创产品设计的路径研究

目的以江苏盐城为例,探索非遗元素融入到文创产品设计中的路径,从而更好地继承和发扬中华优秀传统文化,提高文创产品设计水平。方法采用案例研究法,以江苏盐城的非物质文化遗产为案例,探索非遗元素应用于文创产品设计中的原则以及非遗元素融入文创产品设计的路径。结论为了更好地促进非遗元素与文创产品设计的融合,应积极提取“非遗”的艺术元素,融入到文创产品设计中来,重视非物质文化遗产融入到文创产品中的实用性的挖掘与体现,进行市场调查,结合市场需求找到非遗与文创产品的最佳结合点。

5种方法治理盐城滩涂互花米草的效果及对越冬水鸟影响分析

为治理外来入侵物种互花米草,江苏盐城湿地珍禽国家级自然保护区采用5种不同物理处理方法进行治理,通过后期监测发现互花米草治理效果显著。治理区的互花米草活株数、密度、盖度、鲜重和干重均有大幅度下降,分区1(深翻)和分区2(刈割+淡水水淹)治理效果较佳;珍禽候鸟监测发现10月份有220只/10种,11月份有155只/12种,且分区2能够吸引更多珍禽候鸟。为了保护本土植株生存空间、维护盐城湿地生态多样性、根除外来互花米草入侵,保护区互花米草治理效果显著,可大规模示范推广应用。

城市夜间经济高质量发展动力机制与优化路径研究——以盐城为例

夜间经济在促进城市经济社会发展、提升城市综合竞争力、推进城市转型升级等方面发挥了重要作用。基于城市夜间经济高质量发展基本内涵的分析,以盐城夜间经济为例,依据高质量发展理念与目标,从政策引导、市场调节、产业联动、科技创新、安全保障等多维视角,探究盐城夜间经济实现高质量发展的动力机制,并分别从体系化建设、专业化运营、错位化发展、数字化转型与规范化管理五个方面对盐城夜间经济高质量发展的优化路径展开研究。

遗产综合体构建研究--以盐城世界自然遗产为例

世界遗产管理已经进入可持续、高质量发展的新阶段,亟须探索保护与发展联动的管理模式。借鉴“旅游综合体”这一功能复合、高效互动、以点带面的旅游开发模式,在遗产地构建“遗产综合体”,即以遗产保护为核心,由与遗产相关的监测、研究、展示、服务、产业等多种设施或机构以及管理体制、利益相关者协调机制等制度环境共同构成的功能复合体。它遵循多元综合、保护与发展联动、区域促进等原则,旨在实现遗产保护与地区可持续发展的双重目标。以中国黄(渤)海候鸟栖息地(I期)为例,探讨盐城遗产综合体的现状、问题和优化对策。

盐城市河道水质时空分布特征分析

为了解盐城市2022年河道水质时空分布特征,本文整理了122条骨干河道的水质监测数据,采用水质标识指数、多元统计分析、GIS空间分析相结合的方法研究其时空特征及驱动因子。结果表明,2022年综合水质标识指数(WQI)优于(含)Ⅲ类水的占比为95.5%,高锰酸盐指数、总磷为主要污染因子,以点源和面源污染为主的断面占比分别为21.9%和36.8%。WQI具有较为显著的空间聚集特征。水质受农田灌溉、畜牧养殖、地表径流污染影响较为明显。建议监控上游来水、控制农业面源污染和着重关注东台、射阳、建湖的水环境治理。

盐宜铁路油气田区域选线方法研究

盐泰锡常宜铁路北起盐城,经泰州、无锡、常州,南止于宜兴。该线路是策应“交通强国”国家战略,推进长三角城市群区域一体化发展的需要。本文以线路走向中油田为切入点,利用数值仿真方法建立了油气开采沉降模型、爆炸波伤害效应模型和爆炸火球伤害效应模型,结果表明:(1)研究区最大沉降量为2.9 mm;盐城1号井喷时发生爆炸的安全距离为119 m;发生火灾时安全距离为141 m;(2)结合相关规范,综合得出拟建高速铁路与油气井最小安全距离不小于150 m;(3)对盐城至泰州段线路走向方案进行选线研究,将整体线路走向及卤汀河局部方案进行比选,综合确定了科学、经济、合理的线路方案,满足了铁路设计的总体目标。

不同降雨和植被类型下径流小区产流产沙特征分析

基于滨海水土保持监测站大套坡面径流小区2022—2023年监测资料,利用双累积曲线、Pearson相关性分析等方法,探讨盐城市北方土石山区在不同降雨条件下不同植被类型对径流泥沙的影响,并进行水土保持措施防治效益评价,旨在为本区域水土流失预防和建设良好的生态环境提供了技术支撑。

盐城市农业数字化转型现状·问题与发展建议

盐城市粮食种植面积和产量均居江苏省第一,是农业发展强市。为进一步提高盐城市农业现代化水平,促进农业数字化转型,梳理了盐城市农业数字化转型现状,从基础设施建设、产业链发展等方面总结了盐城市农业数字化转型过程中存在的问题;在此基础上,提出要加强数字农业基础设施建设,坚持数字人才培引,坚持数字赋能激活产业链,加强数据获取、利用和保护能力,坚持发展新业态新模式,加快体系和标准建设等未来发展建议。

盐城自然保护区盐沼植被分布动态监测及驱动力分析

为探究江苏盐城湿地珍禽国家级自然保护区盐沼植被时空演变规律,采用物候特征合成方法反演了1984—2021年保护区核心区4种盐沼植被(互花米草、芦苇、碱蓬和茅草)面积,分析其时空演变规律和驱动机制。结果表明:核心区盐沼植被总面积从11113.2 hm^(2)增长至16528.14 hm^(2),年均复合增长率为1.11%,主要得益于互花米草的保滩促淤能力;互花米草和芦苇通过占领大量碱蓬滩、茅草滩和光滩,面积分别增加了4968.62 hm^(2)和8806.95 hm^(2),年均复合增长率分别为26.67%和6.88%;受生态位竞争等自然因素和水产养殖基地等人工干扰的叠加影响,碱蓬和茅草面积分别减少了3494.25 hm^(2)和4867.38 hm^(2),年均复合增长率分别为-3.14%和-8.11%,适宜生境破碎化严重。