Oil／Gas Accumulation Characteristics and Exploration Methods of the Deltaic Lithologic Reservoirs in Northern Shaanxi Area

There are large deltaic systems in the Triassic Yanchang Formation in the northern Shaanxi area of the Ordos Basin, and developed two sets of good source-reservoir-caprock assemblages and many sets of oil-bearing beds. Exploration experience demonstrates that the formation and distribution of the reservoir were controlled by the generative depression of the Yanchang Formation, and deltaic reservoir sand body is the material basis for large-scale oilfields. In addition, secondary laumontite in a low permeable area was dissolved and then a high permeable area was formed. The updip lithologic variety of reservoir sand bodies is favorable to the formation of subtle lithologic traps, and the deltaic reservoirs are characterized by large multi-beds of oil-generation and abundant hydrocarbon resources. In this paper, the petroleum geologic settings of the studied area are analyzed, and the accumulation characteristics and exploration methods of lithologic reservoirs are summarized. It is of theoretical significance for the study of the exploration theories of lithologic reservoirs, and also expedites the exploration steps of deltaic reservoirs in the northern Shaanxi area.

Study on Development Countermeasures of Cave Dwellings in Northern Area of Shaanxi Province in China

In view of traditional house in northern area of Shaanxi Province which was cave dwelling,based on cave dwelling and its development environment,the paper had analyzed architectural characteristics and use value of cave dwelling and its development in northern Shaanxi,and then pointed out that cave dwelling development had been reduced into an awkward situation.By using SWOT analysis method,the strengths,weaknesses,opportunities and threats of cave dwellings had been summarized.In terms of strengths,cave dwelling had ecological advantage as native architecture,was constructed based on local conditions,could solve land,energy and environment problems on Loess Plateau,and abounded in aesthetic value of native feature.In terms of weaknesses,village layout lacked of integrity,transportation was not convenient,indoor ventilation and lighting were insufficient,and pattern and space were simplified and stereotyped.In terms of opportunities,it stressed architectural ecology having received more and more attention in the world,and exploration and application of underground civil architecture.In terms of threats,it lied in construction technology of cave dwelling,contradiction between cave dwelling and urbanization and between cave dwelling and modern life,and management mode of restricted type.On this basis,it suggested that cave dwelling development in northern Shaanxi should transform people's traditio-nal concept through correct guidance of public voice;strive to eliminate weakness of cave dwelling;improve cave environment by enhancing infrastructure construction;develop characteristic cave dwelling cultural tourism in northern Shaanxi,and construct new socialist countryside of northern Shaanxi character.

Dry Intrusion Analysis of A Heavy Rainstorm in Southern Shaanxi

[Objective] One regional rainstorm weather in the south area of Shaanxi was expounded.[Method] By employing the NCEP/NCAR 1°×1°reanalysis data,routine observation and automatic precipitation station data,the large scale circulation background field of regional precipitation in the south area of Shaanxi province from July 16-18 in 2010 was expounded.By dint of physical quantity such as the meridional wind,relative humidity and false relative temperature,the characteristics of dry intrusion and its role in rainstorm were expounded.[Result] The mild and high latitude at 500 hPa was stable.The continental high pressure and subtropical high pressure were stable.The 700 and 850 hPa shear lines or low vortexes were the main influence system that resulted into large scale of rainstorm in south Shaanxi.The landing typhoon had distinct influences on the importance of storm.The influence of typhoon and subtropical high was mutual.It not only formed and strengthened the torrent in the low air,also transmitted water vapor and energy incessantly to the south area of Shaanxi,playing an important role in augment of rainstorm.There were two distinct dry intrusions in the rainstorm process,showing a dense dry layer in the high layer of convective layer.The existence of dry layer was conductive to the accumulation of convective unstable energy in the low layer.The release of convective unstable energy could transmit warm and wet airstream in the low level to the higher level,being conductive to the occurrence of precipitation.The analysis of θse in the warp direction vertical profile suggested that there was frontal zone in this rainstorm process and the dry air activity in this rainstorm process was very strong.[Conclusion] The study provided theoretical reference to the forecast in future.

Influence Factors of Farmers' Willingness to Poverty Alleviation Relocation in South Shaanxi Province

In southern Shaanxi,far from the core areas of politics and economy,the conditions are inconvenient and farmers have been threatened by geology,floods for many years,resulting in a large population of poor people.The relocation of poverty alleviation project in southern Shaanxi is helpful for improving living standards of people in disaster-stricken areas.Based on the field survey,this paper analyzed 274 valid questionnaires and established a Logistic Regression Analysis Model.The result shows that the health status of head of household,road type before relocation,annual loss of disasters,and changes in the family income after relocation have a greater influence on the relocation willingness of farmers,while the educational level of householder,the distance from the original place of residence to the town and market,the condition of household electricity before relocation and other factors have a little influence on the relocation willingness of farmers.

Development Strategies of Qin Pepper Industry in Shaanxi Province in Northwest China

Qin pepper,a famous local agricultural product of Shaanxi Province,has grown in Guanzhong Area for several hundred years.In recent years,Qin pepper industry has already made considerable progresses,but it also faces many challenges.To ensure a stable planting area of over 100 000 hm 2,a total output of 1.85 million tons and a ratio of 1:2:2 among freshly used peppers,dried peppers and processed peppers in 2015,on the basis of full investigation,expert argumentation as well as research and analysis,industrialization modes of " leading enterprise + agricultural department + base"," leading enterprise + agricultural company" and " leading enterprise + specialized cooperative" are presented herein,on the principle of " appropriate centralization,scale development,company operation,and plate promotion" and in accordance with the general idea of " stabilizing area,optimizing layout;relying on technology,highlighting superior quality;leading by enterprises,and improving efficiency".Some development strategies including " optimizing layout to facilitate plate promotion;increasing science and technology input to improve industrial competitiveness;supporting leading enterprises to accelerate industrialization process;promoting industrial certification to make well-known brands" are also put forward herein.

Spatio-temporal evolution of drought and flood disaster chains in Baoji area from 1368 to 1911

Based on the collation and statistical analysis of flood and drought information in Baoji area from 1368 to 1911, and in the context of climate change, we investigated the spatio-temporal evolution characteristics of drought and flood disaster chains in this area during the Ming and Qing dynasties using the methods of moving average, cumulative anomaly and wavelet analysis. The results are as follows:(1) We found a total of 297 drought and flood events from 1368 to 1911 in Baoji. Among these events, droughts and floods occurred separately 191 and 106 times, which accounted for 64.31% and 35.69% of the total events, respectively.(2) We observed distinct characteristics of flood and drought events in Baoji in different phases. The climate was relatively dry from 1368 to 1644. A fluctuant climate phase with both floods and droughts occurred from 1645 to 1804. The climate was relatively wet from 1805 to 1911. Moreover, we observed a pattern of alternating dry and wet periods from 1368 to 1911. In addition, 3 oscillation periods of drought and flood events occurred around 70 a, 110 a and 170 a, which corresponded to sunspot cycles.(3) We also observed an obvious spatial difference in drought and flood events in Baoji. The northern and eastern parts of Weihe River basin were regions with both frequent droughts and floods.(4) The sequential appearance of drought and flood disaster chains in Baoji from 1368 to 1911 was in response to global climate change. Since the 1760s, global climatic deterioration has frequently led to extreme drought and flood events.

Changes of selenium content in hair samples of people in Kaschin- Beck disease areas two months after stopping selenium salt in Shaanxi Province in 2012

Objective To compare selenium content in hair samples of people in Kaschin-Beck disease(KBD)areas and non KBD areas two months after stopping selenium salt in Shaanxi Province,to provide a scientific basis for KBD control and prevention.Methods In September2012,four historical KBD areas were selected,including Yongshou,Yuyang,Linyou and Nanzheng,four

Optimal livelihood strategy for different poverty groups among farmers: a case study of the Qin-Ba Mountain area in South-Shaanxi, China

Achieving sustainable livelihood is the ultimate goal of poverty alleviation efforts in mountainous areas,and selecting an optimal livelihood strategy for different poverty-type farmers greatly improves farmers’livelihood capital,resists livelihood risks,and promotes sustainable development.For farmers,optimal livelihood strategy means better employment opportunities,higher family income(or better income structure),and stronger employability or development potential.This paper classifies different types of farmers’poverty on the basis of a quantitative evaluation of farmers’livelihood capital in the Qin-ba Mountain Area in South-Shaanxi by using the k-means clustering method and subsequently the fuzzy evaluation method to evaluate the effectiveness of farmers’livelihood strategies.Then,the multi-attribute decision-making model is used to analyze the selection of optimal livelihood strategies for different poverty-type farmers.The results suggest a significant difference in the selection of the optimal livelihood strategy for different poverty-type farmers.Farmers without financial and human capital choose to"go out to work,"farmers lacking natural capital choose to"acquire social insurance and government relief,"farmers without physical capital choose to"use loans,"and farmers lacking social capital choose to"use savings."Studying the selection of optimal livelihood strategies for different poverty-type farmers can help to propose targeted sustainable livelihood optimization programs for farmers and accelerate efforts to overcome poverty in mountainous areas.

PROBLEMS AND COUNTERMEASURES FOR RESOURCES DEVELOPMENT AND ENVIRONMENTAL RENOVATION IN THE CONTIGUOUS AREA OF SHANXI,SHAANXI AND INNER MONGOLIA

The studied area consists of 16 counties belonging to 3 provinces or autonomous re-gion, which are Hequ, Baode, Pianguan and Xinxian counties of Shanxi Province; Yulin,Shenmu, Fugu, Hengshan, Jingbian and Dingbian counties of Shaanxi Province;Dongsheng, Tuoketuo, Qingshuihe counties and Yijinhuoluo, Dalate, Zhungeer banners

The Taxonomic Status of Spermophilus in the Plague Area of Dingbian County,Shaanxi Province,China

This study was conducted to define the taxonomic status of Spermophilus in the plague area of Dingbian County in Shaanxi Province,China,through the two-factor variance analysis of morphological characteristics,DNA barcoding,and chromosome karyotype analysis.

Formation of the Micro-Disseminated Strata-bound Gold Deposits, With Special Reference to Structural Evolution, Miliang Area, Zhen'an County,Shaanxi Province, China

Based on detailed geologic study, the important role of structuring in the formation of gold deposits in the area is discussed with special reference to structural evolution. Syngenetic faulting contemporaneous with tectonic-volcanic events is thought to be responsible for providing the ore-forming material at depth. The lithofacies formed by highly alternating deposition of terrestrial and carbonate detritus is chemically characterized by the assemblage of Au-Sb-As,constituting a favorable source bed for the activation and enrichment of gold. This gold source bed has undergone four major stages of structural deformation, accompanied by multi-staged alteration and mineralization.

A Brief Analysis of the Formal Characteristics of Kiln Dwellings in Tongchuan Area,Shaanxi

The unique topography and historical and cultural background have determined the diversity and uniqueness of kiln architecture in the Tongchuan area.In addition to the double-slope residential architecture,traditional kiln dwellings with regional characteristics such as Leaning on the cliff cave dwelling,ground Pit cave dwelling and Freestanding cave dwellings have also been formed.This paper takes the inheritance and protection of traditional kiln as the starting point,and through field research and literature analysis,we have systematically collected images,measured data,and drawn up horizontal and vertical profiles and three-dimensional structure drawings of the traditional kiln dwellings in Tongchuan,and concluded the three types of forms and structural characteristics and artistic form characteristics of the traditional kiln dwellings in Tongchuan.The aim is to provide a basis and reference for the protection and inheritance of tangible and intangible cultural heritage in Shaanxi,as well as for subsequent research in this field.

Discovery of micromammalian fauna of Sichuan-Guizhou Area in Lantian, Shaanxi

The study of the Xishuidong micromammalian fauna, found from Lantian, Shaanxi Province, indicates that both the northern slope of the Qinling Mountains and Sichuan_Guizhou area must belong to the same Oriental Realm in middle_late Middle Pleistocene. The age of the Xishuidong fauna should be later than that of the Gongwangling fauna, and even a little later than that of the Zhongjiawo fauna in age. The fauna is related not only to that of layers 9 and 8 of Peking Man Locality in northern China, but also to the micromammals from Hexian Man Locality in southern China.

陕北煤矿区采动地裂缝对土壤抗蚀性的影响规律研究

采动地裂缝作为黄河流域中游陕北煤矿区最突出且典型的采动损害问题,引发的水土流失效应已经不容忽视。为了研究采动地裂缝发育对周边土壤抗蚀性的影响,以陕北煤矿区内宽度分别为0~10,10~20,20~30 cm的采动地裂缝为研究对象,采集周边水平距离80 cm以内,垂直深度40 cm以浅的土壤,测定了土壤水稳性团聚体、微团聚体、无机黏粒、有机黏粒、物理性质类等14个国内外学者普遍关注的用于量化表征土壤抗蚀性的指标,采用层次分析法、敏感性分析和因子分析相结合的方法甄选出陕北采动地裂缝发育区土壤抗蚀性的重要量化指标,构建了陕北采动地裂缝发育区土壤抗蚀性综合指数模型。结果表明:①综合层次分析法、敏感性分析和因子分析,甄选确定>0.25 mm水稳性团聚体含量、平均重量直径、<0.001 mm细黏粒含量、土壤团聚度、土壤有机质含量5个指标作为量化表征陕北采动地裂缝发育区土壤抗蚀性的重要指标;②采动地裂缝会降低周围土壤的5个土壤抗蚀性重要指标,其中>0.25 mm水稳性团聚体含量变化最为明显;③根据土壤抗蚀性重要指标,基于因子分析原理构建了陕北采动地裂缝发育区土壤抗蚀性综合指数模型;④采动地裂缝会降低周围土壤的抗侵蚀综合能力,且该效应随着裂缝宽度的增大和水平距离的减小而增强,当距采动地裂缝的水平距离超过170 cm时,采动地裂缝对周围土壤抗侵蚀综合能力的负效应基本消失,其可作为陕北采动地裂缝发育区土壤侵蚀防控的关键区域。研究结果可为黄河中游陕北矿区水土流失的精准防控提供科学依据。

共同富裕视阈下旅游发展助推县域脱贫振兴的效率研究——以陕西秦巴山片区为例

紧密契合新发展阶段推进共同富裕的战略目标,以陕西秦巴山片区为例,运用三阶段DEA-Malmquist指数模型、地理探测器等方法对旅游发展助推县域脱贫振兴的效率进行测度,明确其演变特征,识别影响因素及其交互作用。结果表明:(1)陕西秦巴山片区旅游发展助推县域脱贫振兴的综合效率总体处于中等水平,各县域效率存在明显的区域异质性;(2)2016—2021年陕西秦巴山片区旅游发展助推县域脱贫振兴的效率整体呈波动上升趋势,通过旅游发展来带动县域脱贫振兴还存在较大的提升空间;(3)交通、人均财政支出、人均地区生产总值等因素及其交互作用对旅游发展助推县域脱贫振兴的效率存在显著影响。最后,从合理配置旅游投入产出要素、构建旅游共享发展新格局、改善基础设施及旅游产业经济基础等方面提出了策略建议。

“四史”教育视域下川陕苏区“红色故事”融入地方高校思政课堂的必要性与路径分析

作为川陕苏区历史重要载体的“红色故事”理应在“四史”学习教育尤其是党史学习教育中发挥重要作用。将川陕苏区“红色故事”有效融入思政课堂,对于地方高校打造高品质思政课来说,不仅很有必要,而且有着极为重要的理论价值和现实意义。

井冈山斗争经验在陕甘边革命根据地的传播与实践

陕甘边革命根据地取得“两点一存”的历史地位,是与井冈山斗争经验密切相关的。由于中共中央对朱毛红军“工农武装割据”经验的重视和推广,使井冈山斗争经验传播至陕甘边地区。刘志丹、谢子长等陕甘边领导人根据实际情况,以马克思主义为指导,在探索中学习,将井冈山斗争经验灵活运用到陕甘边革命斗争之中,创建了红二十六军正规化武装,开创了“狡兔三窟”的根据地模式,进而建立了陕甘边区苏维埃政权。相比于同时期的南方革命而言,陕甘边革命者对红色政权的局部性探索,是毛泽东“红色政权”理论在西北地区的伟大实践。

百年中国法治历史中的陕西党史元素

中国特色社会主义法治模式,是百年来中国共产党领导法治的探索成果,是从革命时期局部执政到当代中国治国理政法治经验的总结。党领导法治的历史,特别是中共中央在延安的十三年,蕴含着丰富的陕西党史元素,不仅体现在局部执政的法治建设、依规治党的经验,还体现为陕西党史中的红色法制历程。总结和凝练党领导法治历史中的陕西元素,有助于理解当代中国的法治,拓展陕西党史的研究。

全面抗战时期陕甘宁边区乡村党员教育研究

全面抗战时期,陕甘宁边区持续开展党员教育,以提高农民党员的思想认识与政治水平,引导广大乡村党员干部坚定理想信念和政治方向,围绕党的政治路线和中心工作,坚持抗日民族统一战线,一切为战胜日本帝国主义而奋斗。在中共中央、西北局(边区党委、边区中央局)领导下,边区乡村党员教育以西北局高干会为界,分为前后两个阶段。前一阶段,乡村党员教育中的教条主义、主观主义比较严重,教学方式以照本宣科为主,教育形式主要是流动训练班,教材内容艰深、枯燥无味。后一阶段,结合全党整风,较好地纠正了党员教育中存在的偏差,面向乡村党员干部的扫盲教育与政治教育取得显著效果,基本实现了巩固和发展党员的目标。