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药用百合的产地演变及种质资源多样性研究进展
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作者 侯超文 石雨荷 +7 位作者 朱珏 李晓玲 刘泽湘 龚秀娟 彭志豪 周日宝 刘湘丹 童巧珍 《世界中医药》 2025年第1期148-154,共7页
百合为百合科百合属植物,存在历史悠久,具有显著的药用价值。伴随着时代变迁以及生长环境的演变,百合呈现出丰富的种质资源多样性。为了更好地了解我国药用百合的产地演变过程以及资源多样性等相关信息,现对近二十几年相关文献进行查阅... 百合为百合科百合属植物,存在历史悠久,具有显著的药用价值。伴随着时代变迁以及生长环境的演变,百合呈现出丰富的种质资源多样性。为了更好地了解我国药用百合的产地演变过程以及资源多样性等相关信息,现对近二十几年相关文献进行查阅,鉴于目前对药用百合种质资源的研究还较为缺乏,多是集中在化学成分、生理生化机制及药理作用的研究上。 展开更多
关键词 药用百合 产地演变 表型性状 物候期特性 活性成分 抗病害 资源保护 合理利用
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Spatial-temporal Pattern Evolution of Manufacturing Geographical Agglomeration and Influencing Factors of Old Industrial Base:A Case of Jilin Province,China 被引量:6
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作者 LI Linshan MA Yanji 《Chinese Geographical Science》 SCIE CSCD 2015年第4期486-497,共12页
The primary object of this paper is to examine the spatial-temporal pattern evolution of manufacturing geographical agglomeration of the old industrial base.Industrial spatial agglomeration index and concentration rat... The primary object of this paper is to examine the spatial-temporal pattern evolution of manufacturing geographical agglomeration of the old industrial base.Industrial spatial agglomeration index and concentration ratio are used in this paper.Multiple linear regression models are also applied to try to explore the internal driving mechanisms on manufacturing geographical agglomeration.The results show that:1) the manufacturing agglomeration degree of Jilin Province is increasing gradually.The spatial polarization structure is visible;and the central region is the agglomeration area,in addition,the manufacturing industries of Changchun Proper present a trend of dispersion;2) the structure of manufacturing industries has changed,and the concentration ratio of labor-intensive manufacturing industry is declining,while the proportions of technology-intensive and capital-intensive manufacturing industry are relatively rising;3) marketing level,location accessibility,labor resources,capital,science and technology innovation capability,scale economy and the level of globalization affect manufacturing agglomeration with different degree.There are significant differences of the effects about employment,technology,the quality of residents and the export-oriented market on the industrial concentration ratio;4) in the future,the impact of policy and institution,export-oriented market and quality of resident on manufacturing geographical agglomeration pattern will be more profound. 展开更多
关键词 old industrial base manufacturing geographical agglomeration industrial spatial agglomeration index concentration ratio Jilin Province China
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