Trend and Countermeasures for the Development of Rural Resident Tourism Market

The development status of rural resident tourism market is introduced in this study,and its potential influencing factors are analyzed.With coastal areas as the study case,the future development trend of rural resident tourism market in China is predicted from the aspects of market scale,consumption pattern,tourism level and tourism season,moreover,countermeasures are put forward for the healthy and sustainable development of rural resident tourism market.

An assessment of the carrying capacity of groundwater resources in North China Plain region–Analysis of potential for development

Over-exploitation of groundwater in North China Plain(NCP) has resulted in a series of eco-environment problems. Sustainable use of groundwater resources in NCP, in particular management of groundwater resource carrying capacity(GRCC), faces an unprecedented challenge. Here we define GRCC, and a new assessment method is tentatively proposed and applied to evaluate GRCC based on the whole NCP, city administrative units and county administrative units. Our study divided the NCP into three zones, i.e. non-overexploited non-overloaded zone(NNZ), overexploited but non-overloaded zone(ONZ), and overexploited overloaded zone(OOZ). Results confirmed 27.6% of counties belonged to NNZ. However, 58.9% of counties and NCP as a whole belonged to ONZ, and 13.5% of counties belonged to OOZ. Spatially, NNZs were mainly distributed in Beijing, parts of eastern coastal cities and Henan Province. OOZs were mostly distributed in middle-eastern part of Cangzhou, parts of Dezhou, Tianjin and Binzhou, and the remaining areas belonged to ONZs. We suggest two approaches for enhancing GRCC, i) increasing the amount of available groundwater and ii) improving the water use efficiency. An increase of 11.0 billion cubic meters to the available groundwater levels combined with water use efficiency improvements up to 479 CNY per cubic meter of the world mean, the gross domestic product(GDP) sustained by groundwater in the NCP could reach 11.1 trillion CNY and maintain a 20 years of GDP development assuming the current rate of growth.

Problems and countermeasures for land exploitation and utilization in China's development areas

s: The planning area and developing area in China's l29 national and 584 provincial development areas cover 8000 km2 and l500 km2 respectively. By typical field investigations we found that China's development areas have the characteristics of abundant categories, excessive quantities, large scales and dense localities in coastlands, border areas and river banks. And their utilization have 4 features of mainly collecting and occupying agricultural lands, minor rebuilding of old city; mainly taking up cultivated lands, minor exploiting and utilizing barren mountains and bleak sloping lands; collecting and occupying lands at first, utilizing afterwards; using large quantities of lands but obtaining comparatively fewer benefits. According to the analyses, China's development areas can be concluded into one of the four categories: constructed from cultivated lands, reconstructed from old cities, constructed from coastlands and islands, and constructed from barren mountains and desolate sloping lands. Their corresponding problems of unsuitable planning and distribution leaving cultivated lands unused, low remission price and chaotic management measures are analyzed in detail and the countermeasures are put forward. These include planning and distribution the lands in an integrated way, managing all these lands in a unified system. improving the growth pattern of their economy, and advancing their utilization and output ratios.

Exploitation and Sustainable Development of Hot Springs in Xinjiang Province of China——A Case Study of Shawan Hot Spring Tourist Area

The paper had introduced geographic causes and types of hot springs, illustrated its disease-treating function and displayed its great vitality and widespread development prospect as tourist resources. By taking Shawan Hot Spring in Xinjiang for example, the paper had analyzed its natural condition, hot springs and tourist economic development. And then, quantitative and qualitative analysis had been conducted on the quality of water environment resources in the research area. It had analyzed reasons for degeneration of water environment and studied exploitation and sustainable development of hot springs. It was considered that environment especially water environment quality had decreased since hot spring tourism development. In order to achieve sustainable development of hot springs and promotion of local tourism, it must be guided by environment treatment, and some strategies for sustainable development of hot springs had been proposed.

Development of an ultra-high-pressure rotary combined dynamic seal and experimental study on its sealing performance in deep energy mining conditions

With the continuous development of deep oil and gas,minerals,geothermal resources,and other resources,there are increasingly more stringent requirements for equipment.In particular,the ultra-highpressure dynamic seals of deep mining device need to be developed.Therefore,considering the use of dynamic seals in unique deep mining environments,an ultra-high-pressure rotating combined dynamic seal was designed and developed and its sealing performance was experimentally measured and analyzed.The results show that the experimental device can operate stably under a pressure of up to150 MPa and a rotating speed of 76 r/min,and can also operate normally under a rotating speed of up to 140 r/min and a sealing pressure of 120 MPa.During the operation of the ultra-high-pressure rotating combined dynamic seal,the sealing ring does not show obvious damage,which vouches for its sealing performance.No leakage of flow and pressure was detected in the all seal structures within the sealing pressure range of 0-150 MPa.Therefore,the dynamic sealing performance of the device is intact under ultra-high-pressure conditions and can be applied in deep mining environments at a certain depth.The research and development of this device can aid future deep energy exploration and exploitation.

RESEARCH ON REGIONAL COMPREHENSIVE DEVELOPMENT IN DEVELOPED REGIONS-THE CASE OF SHANGHAI-NANJING-HANGZHOU AREA

The developed regions are faced with the problems of regional comprehensive development, and the research on regional comprehensive development has become a trend in the world. To optimize regional industrial structure and to select and determine scientifically the spatial development strategy of regional industries are the central themes to be solved for the research on regional comprehensive development in the developed regions. This paper proposed the basis for optimizing regional industrial structure, and the main factors of selecting and determining the regional leading industries. Based on this, the paper puts forward the leading industries and the spatial development strategy in Shanghai-Nanjing-Hangzhou area in the future ten or more years. Combined with the situation of Shanghai-Nanjing-Hangzhou area, the paper also discusses some problems of locating superior developing axis to benefit the rational distribution of regional productive forces.

Research on sustainable development of small islands in China─taking 12 island counties for examples

Islands serve as the basis for marine exploitation,and the sustainable development of islands and that of marine exploitation are closely inter-connected. This article inquires into problems on the sustainable development of small islands by taking 12 island counties in China for examples.

Protect the Environment and Speed up the Sustainable Development of Chinese Agriculture

Strengthening the environmental protection, deepening rural reform, increasing agricultural input, and promoting a more stable and higher-speed growth of peasants＇ income, all of these are playing a very important role in the sustainable development of agriculture. The environment problems are not only economic problems, but also important political problems. And they constitute an urgent and arduous task that we meet, and need a long time to be conquered. Under the present new historical circumstances, we should establish a scientific development philosophy, strengthen the environment protection, and build up a harmonious society in which urban and rural areas are progressing coordinately.

Earth Resources Exploitation and Sustainable Development: Geological and Engineering Perspectives

Earth resources are the essential basis for an economy of a country and well-being of her citizens. Their exploitation is a key factor in economic growth and development of the nation, but one that can have serious negative environmental and socio-economic impacts. Therefore it is important to understand their origin/occurrence and exploitation in terms of environmental sustainability. The human society has profited from exploitation of earth resources, precisely when energy use became much more efficient during the industrial era. Some of these earth resources (renewable and non-renewable) are oil and gas, coal, water, metal ore, wind, air etc. and their methods of exploitation are surface and subsurface mining methods [1]. Thus the geological perspectives of earth resources refer to origin and occurrence of these earth resources while the engineering perspectives refer to the processes involved in the extraction (mining), processing and utilization of the resources. To fulfill the requirement of sustainable development, the efficiency with which resources are utilized has to be improved. The main concerns associated with earth resources, therefore, are generally the costs and environmental impacts of extracting, transporting, and refining them. The economics of earth resources deals with the supply, demand and allocation of the resources.

EXPLOITATION & DEVELOPMENT OF CHINA'S SALT LAKE RESOURCES

This article recounts the current state of the research, developmemt and exploitation of the salt-lake resources in China’s hinterland with emphasis placed on those in Qinghai Province. It suggests that R&D input in and exploitation of the resources be stepped up, as this is of vital significance in boosting the regional economy of northwest China.

近40年云南普通野生稻优异特性及有利基因的发掘与利用

稻种资源是栽培稻育种的物质基础,也是研究栽培稻起源、进化、发育和基因功能的重要对象。在众多野生稻中,普通野生稻与栽培稻亲缘关系最近,是培育栽培稻新品种的优异基因供体,因此了解清楚其遗传背景尤为重要。以云南普通野生稻为对象,对其遗传背景的研究和有利基因的运用进行总结和分析,首先详细梳理了近年来从云南普通野生稻资源中发掘出的优异特性,阐述了其各种优良性状;其次系统总结了云南普通野生稻有利基因的发掘现状,囊括了目前从中发掘出来的重要功能基因;然后综述了云南普通野生稻优异特性在创制新种质方面所取得的成就,包括滇9型籼型不育系的育成及大量育种中间材料的获得;最后针对云南普通野生稻开发研究的优势和存在的问题,提出今后的研究重点以及有利基因发掘利用的建议,并对其利用的潜力进行了展望,以期为云南普通野生稻的进一步研究、开发和利用提供理论支持。

多径利用雷达目标探测技术综述与展望

多径利用雷达(MER)目标探测技术主要基于电磁波在介质表面的反射、衍射等非直视(NLOS)多路径传播特性,实现对城市街角、车辆遮挡等“视觉”盲区内隐蔽目标的有效探测,其能够为城市作战、智能驾驶等多种应用提供服务,具有重要的现实意义和研究价值。为获知该领域的发展脉络,并预测未来可能的发展趋势,该文对21世纪初以来该领域国内外公开文献进行了归纳总结。相关文献的梳理结果表明,根据探测平台类型的不同,多径利用雷达目标探测技术目前主要包括两类:基于空中平台的多径探测技术和基于地面平台的多径探测技术。这两类技术均已取得一定具有实际意义的研究成果。针对空中平台,该文围绕可行性验证、影响因素分析、建筑环境感知和非视距目标探测4个方面展开梳理;针对地面平台,该文则从目标检测与识别、目标二维定位、目标三维信息获取及新型探测方法4个方面展开论述。最后,对多径利用雷达目标探测技术进行总结和展望,指出该技术在目前实际应用中所面临的潜在问题和挑战。这些结果表明,多径利用雷达目标探测技术正朝着多样化、智能化的方向发展。

纳米磁性聚合物微球在石油工业中的研究进展

随着纳米技术的持续发展,磁性聚合物微球作为一种磁响应型纳米材料,在石油工业中展现出极具潜力的应用前景。该文对磁性聚合物微球的多样化结构类型进行了系统的概述,对单体聚合法、活性聚合法进行了详细介绍,并分析了相应的技术特征及其优势与局限性。评述了磁性聚合物微球在油水分离、高效脱硫、催化改质和智能驱油石油应用领域的最新研究成果和技术进展,总结了当前磁性聚合物微球在石油工业应用中所面临的挑战,并对未来的发展趋势进行了展望。未来的研究应侧重于创新制备技术,对磁性核心的表面进行改性、对聚合物外层基团进行精准设计,以提升材料的磁性质量和在石油环境中的稳定性。此外,对磁性聚合物微球的性能进行精细调控,以实现高效率和目标导向的应用效果,即研发具备高磁含量、单一粒径分布、表面易于功能化且具备可调节亲/疏水性质的磁性聚合物微球,以满足石油工业不同场景下的需求。

地质工程一体化对我国海域天然气水合物效益勘探开发的启示

海域天然气水合物储层具有埋藏浅、弱胶结、未成岩等特点,降压开采过程可能会导致工程地质风险的加大,严重影响开采效率。因此,权衡产能需求与工程地质风险对于延长开采周期、保障开采安全尤为重要,有必要通过地质工程一体化技术探索出一条提高海域天然气水合物勘探开发效果、有效降低工程作业成本的新途径。文章介绍了地质工程一体化的发展历程,剖析国内外典型地质工程一体化应用实例,围绕海洋天然气水合物开发面临的挑战和科学问题,结合我国天然气水合物开发技术发展现状,对构建天然气水合物高效开采技术和经济技术评价体系(多井综合评价技术、产气潜力评价技术、靶点垂深预测技术)提出建议,基于“地质数据集成—研究平台—决策中心”架构,阐述海域天然气水合物地质工程一体化平台化建设思路,为未来我国海域天然气水合物效益勘探开发提供技术支撑。

北极地区油气资源分布特征与开发利用分析

北极地区蕴藏着丰富的油气资源,对优化我国能源进口结构及有效分散石油进口风险具有重要意义。基于标普全球和美国地质调查局最新数据,本文开展了环北极主要国家油气勘探开发历程分析和北极地区油气资源时空分布特征分析。分析结果表明:(1)北极地区油气勘探开发工作主要在俄罗斯、美国、加拿大、挪威和丹麦五国开展,分为早期调查(至1963年)、陆上大发现和早期开发(1964-1976年)、海陆并进和快速上产(1977-1992年)、勘探低迷和开发高位徘徊(1993年至今)4个阶段。(2)北极地区已发现油气田519个,累计油气探明和控制可采储量474亿吨油当量,累计产量162亿吨油当量,待发现资源量1159亿吨油当量,呈现出油气构成不均、海陆分布不均、国别分布不均和层位分布不均的特点。基于对环北极国家油气开发利用情况和前景的综合考量,建议我国积极与俄罗斯开展天然气勘探开发合作,在夯实管道天然气开发建设进程的基础上,拓展液化天然气和北极航道基础设施建设合作领域。

农民的生计与意义世界

进入21世纪,中国农村正在发生巨变,高速城市化和市场化不仅改变了农民的生产方式,而且改造了农民价值观,其中关键是本体性价值的改变。长期受到儒家文化浸润的中国农民,勤劳节俭,他们是中国现代化的功臣,因为正是他们创造性的劳动助力中国经济发展的奇迹,也正是他们对子女进城的托举,使得中国有高速且高质量的城市化。同时,城市化和市场化也正在彻底改造农村和农民,这种改变的一个后果是文化失调和价值错位。在未富先老的背景下,通过不离家不离土不离村应对农村老龄化,加强文化建设,可能是未来一段时期国家政策可以着力的方向。

数字经济对区域新产品开发绩效的影响——来自省级面板数据的证据

基于2013—2022年中国30个省份的面板数据,实证检验数字经济对区域新产品开发绩效的影响。研究发现,数字经济对区域新产品开发绩效具有显著的促进作用,且经过内生性检验和多种稳健性检验后这一结论仍然成立。异质性分析结果表明,数字经济对区域新产品开发绩效的驱动效应存在地区异质性和城市化水平异质性,首先,数字经济显著提高了东部和西部地区的新产品开发绩效,但对中部地区的促进作用不显著;其次,相比低城市化水平地区,数字经济对高城市化水平地区新产品开发绩效的作用效果更显著。进一步研究表明,数字经济通过促进探索式创新提高区域新产品开发绩效。因此,政府应该加大对基础设施建设的投资力度,设立专项基金支持创新项目,并提供相关的培训和技术支持,因地制宜地进行城市规划,制定发展政策,提升区域新产品开发绩效。

山西煤成气勘查开采新进展及发展对策

山西省煤成气资源储量丰富,产业体系完整,工业基础雄厚,形成了沁水盆地和鄂尔多斯盆地东缘2大产业化开发基地,在全国煤成气开发格局中具有重要的引领作用和示范意义。针对山西煤成气存在的勘探程度低、技术适应性差、投资回报慢和开发规模小等突出问题,在系统阐述山西煤成气资源及勘查开采进展基础上,分析研判了山西煤层气勘查开采在高质量发展中存在的问题,提出了以新理念推动山西煤成气产业高质量发展的对策,认为可以从加大公益性勘查投入、持续增加优质区块供给,加强监督管理服务、助力油气勘查开发,加强技术交流互鉴、推动产量产能建设以及构建稳定作业环境、加强产业政策扶持支持等4方面深入开展工作,不断提升煤成气产业发展活力与动力。

STAGES AND POTENTIALITY OF WATER RESOURCES DEVELOPMENT INARID NORTHWESTERN CHINA

The processes of water resources exploitation and utilization can be divided into three stages by water resources transformation, and the history, present situation and future trend of water resources development in piedmont areas around high mountains of arid northwestern China. The three stages are: the stage of surface water development (the first stage), the stage of comprehensive development of surface and ground water (the second stage) and the stage of economical development of water rare (the third stage). The three stages link each other and show the law and processes of water resources exploitation and utilization associated with social and technological progess. The economical water policy should run through the three stages. On this point, however, the third stage differs from the others, particularly, refering to irrigated agriculture. The third stage has more progressive significance because it breaks the traditional ideas on water resources development. According to our investigation and calculation, under present conditions of water resources development, the net used water is about 160 × 108 m3, accounting for 18% of the total water resources of northwestern China. The water resources have not ben fully develop. If the first stage is finished, the exploitable water can be increased by 91 %. After the second stage, furthermore, it can be increased by 216%.

SPECULATION ON DEVELOPING TOUR RESOURCES OF THE TOURNAMENT ATHLETICS IN HARBIN CITY

The exploitation and utilization of the tour resources of tournament athletics, including skiling, boat sailing, archery, ice engraving, snow engrav ing, has become a new trend of the development of Chinese tourism. Due to the un ique cold climate and superior geographic location,Harbin is a promising city f or developing tour resources of tournament athletics. Based on the analysis of t he superiority and peculiarity of Harbin,the speculation on development of tour resources of tournament athletics in Harbin is proposed as follows:1) Harbin s hould develop its special tour resources of tournament athletics associated with needs of market; 2) Harbin should take the advantages of rich resources and dev elop ice and snow entertainment in winter and travel for sight-seeing and spend ing summer; 3) the adjustment of the layout of ice and snow resources should be based on the idea of taking Harbin as the center and all-side opening at the la rge scale in the way of radiation; 4) tourism should be developed by the combine d efforts of various departments to make feasible plan, and the organizers shoul d pay much attention to ensuring the safety of tourists.