艾比湖作为典型的干旱区湖泊,其保护与研究对于应对生态退化以及维护生态平衡具有重要意义。遥感技术以其能够提供大范围、多尺度和多时相连续观测数据的特点,在监测干旱区湖泊的生态环境变化方面显示出巨大的优势。运用CiteSpace软件对1990—2023年中国知网(CNKI)和Web of Science(WOS)数据库中有关艾比湖区域遥感技术研究的340篇文章进行文献可视化分析,综合分析了该领域文献的发文量、研究力量和研究热点,揭示了相关研究的演进历程、研究焦点及其演变趋势。结果表明:该领域的研究始于1990年,经历了萌芽期、快速增长期以及近年来的发展减缓期;核心作者群体和研究机构已经形成,但在跨学科合作方面还存在提升空间;研究热点包括艾比湖、艾比湖湿地和艾比湖流域的相关主题,从早期的湖面变化和荒漠化监测分析,逐步转向生态系统服务价值、土地利用及景观格局变化等多元化方向。为理解艾比湖区域遥感技术研究的发展态势提供了科学依据,并对未来的研究方向提出了建议。
随着人口老龄化程度不断加深,劳动力规模缩减,传统的产业发展模式进入瓶颈期,产业结构的调整升级受到一定的影响。在2020年全国第七次人口普查中,辽宁省老龄化程度位居第一位,因此十分有必要对辽宁省人口老龄化背景下的省域产业结构变化特征和趋势进行深入研究。本文在综合分析人口老龄化对产业结构调整的理论机制基础上,对产业结构合理化和高级化两个维度进行实证分析。研究结果表明辽宁省人口老龄化不会对产业结构合理化产生积极影响,但是会促进产业结构向高级化发展,因此辽宁省应转变产业发展方式,积极发展老年产业,健全养老服务体系,同时注重劳动力资源的合理配置,促进老龄化下的产业优化升级。With the deepening of the aging of the population and the reducing of the size of the labor force, the traditional industrial development mode has entered the bottleneck period, and the adjustment and upgrading of the industrial structure has been affected to a certain extent. In the seventh national population census in 2020, Liaoning Province is first in the aging degree. Thus, it is necessary to conduct in-depth research on the characteristics and trends of industrial structure change in Liaoning Province under the background of population aging. Based on the comprehensive analysis of the theoretical mechanism of the aging of population on the adjustment of industrial structure, this paper develops an empirical analysis of the two dimensions of industrial structure rationalization and upgrading. The results show that the aging of population in Liaoning Province will not have a positive impact on the rationalization of industrial structure, but will promote the industrial structure to develop to an advanced level. Therefore, Liaoning Province should change the industrial development mode, actively develop the elderly industry, improve the old-age service system, and pay attention to the rational allocation of labor resources to promote the industrial optimization and upgrading under the aging.
人口年龄结构的变化会导致储蓄总量与消费结构的变化,进而影响经济增长。第七次全国人口普查数据显示,辽宁省出现低生育率与严重老龄化并存的现象。十年间人口数量减少超过115万。文章基于人口与经济增长理论,在对辽宁省人口年龄结构变化及经济增长现状分析的基础上,根据辽宁省14个城市的面板数据,对2006~2020年的人口年龄结构与经济增长关系进行实证分析。研究结果表明:辽宁省0~17岁和60岁以上人口数量占比经济增长呈现倒U型变动关系,并提出解决辽宁省现阶段人口和经济增长问题的相关建议。The change in population age structure will lead to changes in total savings and consumption structure, which in turn will affect economic growth. According to the data of the seventh national population census, Liaoning Province has a low fertility rate and a serious aging population. The population has declined by more than 1.15 million in 10 years. Based on the theory of population and economic growth, this paper analyzes the changes in the population age structure and the current state of economic growth in Liaoning Province. Using panel data from 14 cities in Liaoning Province, it conducts an empirical analysis of the relationship between population age structure and economic growth from 2006 to 2020. The results show that the proportion of the population aged 0~17 and over 60 years old in Liaoning Province shows an inverted U-shaped change relationship, and some suggestions are put forward to solve the current population and economic growth problems in Liaoning Province.
渔业经济新质生产力具有丰富的内涵和特征。新质生产力促进渔业经济高质量发展,驱动了渔业经济创新发展、绿色发展,推动了现代渔业产业体系构建。渔业领域在当前发展中仍存在一些问题,如渔业领域核心技术卡脖子、创新人才缺失、管理理念滞后等。为充分发挥新质生产力对水产领域的驱动作用,加快渔业经济新质生产力发展,需持续增加科研投入,精准实施技术创新;培养渔业领域创新人才,“产学研”一体化;推进组织与管理创新,深化市场导向思想。The new quality productivity of fishery economy has rich connotation and characteristics. The new quality productivity promotes the high-quality development of the fishery economy, drives the innovative and green development of the fishery economy, and promotes the construction of the modern fishery industry system. There are still some problems in the fishery field in the current development, such as the necklace of core technology in the fishery field, the lack of innovative talents, and the lagging management concept. In order to give full play to the driving effect of new quality productivity on the aquatic field and accelerate the development of new quality productivity in the fishery economy, it is necessary to continuously increase the investment in scientific research and accurately implement technological innovation;cultivate innovative talents in the fishery field, and integrate the “industry-academia-research”;and push forward the innovation of the organization and management, and deepen the market-oriented ideas.
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