目的探讨国内外2014—2024年术中低体温研究热点与趋势,为我国该领域相关研究提供参考依据。方法检索中国知网和Web of Science数据库与术中低体温相关的文献,使用CiteSpace6.2.R7软件对发文量、关键词共现、关键词聚类等方面进行分析...目的探讨国内外2014—2024年术中低体温研究热点与趋势,为我国该领域相关研究提供参考依据。方法检索中国知网和Web of Science数据库与术中低体温相关的文献,使用CiteSpace6.2.R7软件对发文量、关键词共现、关键词聚类等方面进行分析。结果共检索到2986篇文献,最终纳入有效文献为2282篇。研究主要分布在66个国家和611个机构,全球发文量最多的国家为美国,中国次之,国外发文作者和发文机构之间的合作较为密切。国内405个关键词共出现12聚类,国外364个关键词共出现8个聚类。国内外研究热点主要为(1)术中低体温的影响因素、体温管理和保温措施;(2)术中低体温风险预测模型和列线图预测模型。结论国内发文作者和发文机构之间的合作交流有待加强,我国学者在该领域的国际影响力较大。术中低体温的预防和管理至关重要,研究者需根据术中低体温的影响因素合理选择有效的干预措施,降低术中低体温的发生率,减少并发症的发生,促进患者的术后恢复。展开更多
Due to the multiple impacts of global climate change and anthropogenic disturbances,regional ecological landscapes have been developing towards fragmentation.How to quantitatively measure regional ecological landscape...Due to the multiple impacts of global climate change and anthropogenic disturbances,regional ecological landscapes have been developing towards fragmentation.How to quantitatively measure regional ecological landscape fragmentation and identify its key drivers is an important foundation for regional biodiversity conservation and ecosystem restoration.Taking the Guanzhong Plain Urban Agglomeration(GPUA),China as the research object,this paper proposes a comprehensive framework that integrates landscape pattern index,principal component analysis,random forest(RF)and other methods to quantitatively analyze the spatial and temporal evolution of ecological landscape fragmentation and its driving factors.The results show that:1)cropland,forestland and grassland showed significant spatial differentiation in the landscape pattern index,and the change of their mean values indicated that cropland and forestland show a trend of‘little decrease-continuous increase’.Spatially,the northwestern and southeastern regions showed significant fragmentation and prominent spatial heterogeneity.2)From 2010 to 2020,the landscape fragmentation of cropland and forestland increased by 71%and 20%,respectively,while that of grassland decreased by 33%,indicating that the degree of landscape fragmentation of cropland changed more drastically than that of other ecological land.3)It was found that slope was the most important factor affecting landscape fragmentation of ecological land.In addition,road density had a significant effect on landscape fragmentation of cropland and forestland,but the min-distance between patches and the county center had an important effect on landscape fragmentation of grassland.This study can provide theoretical references for urban agglomeration planning and sustainable landscape management on a regional scale.展开更多
文摘目的探讨国内外2014—2024年术中低体温研究热点与趋势,为我国该领域相关研究提供参考依据。方法检索中国知网和Web of Science数据库与术中低体温相关的文献,使用CiteSpace6.2.R7软件对发文量、关键词共现、关键词聚类等方面进行分析。结果共检索到2986篇文献,最终纳入有效文献为2282篇。研究主要分布在66个国家和611个机构,全球发文量最多的国家为美国,中国次之,国外发文作者和发文机构之间的合作较为密切。国内405个关键词共出现12聚类,国外364个关键词共出现8个聚类。国内外研究热点主要为(1)术中低体温的影响因素、体温管理和保温措施;(2)术中低体温风险预测模型和列线图预测模型。结论国内发文作者和发文机构之间的合作交流有待加强,我国学者在该领域的国际影响力较大。术中低体温的预防和管理至关重要,研究者需根据术中低体温的影响因素合理选择有效的干预措施,降低术中低体温的发生率,减少并发症的发生,促进患者的术后恢复。
基金Under the auspices of National Natural Science Foundation of China(No.42271214)Key Research Program of Gansu Province(No.23ZDKA0004)Natural Science Foundation of Gansu Province(No.25JRRA212,21JR7RA281,22JR11RA149,24JRR A250)。
文摘Due to the multiple impacts of global climate change and anthropogenic disturbances,regional ecological landscapes have been developing towards fragmentation.How to quantitatively measure regional ecological landscape fragmentation and identify its key drivers is an important foundation for regional biodiversity conservation and ecosystem restoration.Taking the Guanzhong Plain Urban Agglomeration(GPUA),China as the research object,this paper proposes a comprehensive framework that integrates landscape pattern index,principal component analysis,random forest(RF)and other methods to quantitatively analyze the spatial and temporal evolution of ecological landscape fragmentation and its driving factors.The results show that:1)cropland,forestland and grassland showed significant spatial differentiation in the landscape pattern index,and the change of their mean values indicated that cropland and forestland show a trend of‘little decrease-continuous increase’.Spatially,the northwestern and southeastern regions showed significant fragmentation and prominent spatial heterogeneity.2)From 2010 to 2020,the landscape fragmentation of cropland and forestland increased by 71%and 20%,respectively,while that of grassland decreased by 33%,indicating that the degree of landscape fragmentation of cropland changed more drastically than that of other ecological land.3)It was found that slope was the most important factor affecting landscape fragmentation of ecological land.In addition,road density had a significant effect on landscape fragmentation of cropland and forestland,but the min-distance between patches and the county center had an important effect on landscape fragmentation of grassland.This study can provide theoretical references for urban agglomeration planning and sustainable landscape management on a regional scale.
