Biological collections are critical for the understanding of species distributions and for formulating biodiversity conservation strategies.However,biological collections are susceptible to various biases,including th...Biological collections are critical for the understanding of species distributions and for formulating biodiversity conservation strategies.However,biological collections are susceptible to various biases,including the“road-map effect”,meaning that the geography of biological collections can be influenced by road networks.Here,using species occurrence records derived from 921,233 plant specimens,we quantified the intensity of the“road-map effect”on floristic collections of China,and investigated its relationships with various environmental and socio-economic variables.Species occurrence records mainly distributed in major mountain ranges,while lowlands were underrepresented.The distance of species occurrence records to the nearest road decreased from 19.54 km in 1960s to 3.58 km in 2010s.These records showed significant clustering within 5 km and 10 km buffer zones of roads.The road density surrounding these records was significantly higher than that in random patterns.Collectively,our results confirmed a significant“road-map effect”in the floristic collections of China,and this effect has substantially intensified from the 1960s to the 2010s,even after controlling for the impact of road network expansion.Topographic,climatic and socio-economic variables that determine regional species diversity,vegetation cover and human impact on vegetation played crucial roles in predicting the intensity of the“road-map effect”.Our findings indicate that biological surveys have become increasingly dependent on road networks,a trend rarely reported in published studies.Future floristic surveys in China should prioritize the lowland areas that have experienced stronger human disturbances,as well as remote areas that may harbor more unique and rare species.展开更多
目的分析“一带一路”视域下药食两用本草桑叶的研究现状及热点,为进一步开发利用中药材提供思路。方法以国内权威数据库中国知网(CNKI)、维普(VIP)、万方(Wanfang)和国外权威数据库Web of Science(WOS)为文献来源,借助COOC和VOSviewer...目的分析“一带一路”视域下药食两用本草桑叶的研究现状及热点,为进一步开发利用中药材提供思路。方法以国内权威数据库中国知网(CNKI)、维普(VIP)、万方(Wanfang)和国外权威数据库Web of Science(WOS)为文献来源,借助COOC和VOSviewer软件对我国“一带一路”区域省市及“一带一路”沿线国家在2013年1月—2024年9月发表的桑叶相关科学研究进行检索和分析,并绘制知识图谱。结果共检索到桑叶中文相关科学研究文献520篇,涉及我国“一带一路”18个省市,以及桑叶英文相关科学研究文献219篇,涉及中国和17个“一带一路”沿线国家。其中,中文研究数量整体呈下降趋势,而英文呈逐步增长趋势。研究区域上,“丝绸之路经济带”(一带)以新疆、重庆为代表,“21世纪海上丝绸之路”(一路)以广东、浙江为代表;“一带一路”沿线国家以巴基斯坦、马来西亚为代表。主要收录期刊有《实用中医内科杂志》《食品科学》、Molecules、Journal of Ethnopharmacology;涉及学科方向主要为中药学、中医学、食品科学。研究热点上,我国“一带”区域13个省市主要围绕桑叶活性成分提取、检测、药理作用及药用桑叶进行研究,“一路”区域5个省市注重于桑叶临床研究、数据挖掘、配伍规律及桑叶茶的研究;国际上我国及“一带一路”沿线国家研究热点为桑叶黄酮和1-脱氧野尻霉素、治疗糖尿病机制、网络药理学、肠道菌群。结论“一带一路”视域下桑叶研究主要集中于有效成分提取、含量测定、药理作用、临床研究、数据挖掘、配伍规律、桑叶茶和治疗糖尿病机制等,在医药和食品方面有潜在价值。展开更多
基金funded by National Natural Science Foundation of China(32460276,32060275)Jiangxi Provincial Natural Science Foundation(20232BAB203058,20242BAB27001)。
文摘Biological collections are critical for the understanding of species distributions and for formulating biodiversity conservation strategies.However,biological collections are susceptible to various biases,including the“road-map effect”,meaning that the geography of biological collections can be influenced by road networks.Here,using species occurrence records derived from 921,233 plant specimens,we quantified the intensity of the“road-map effect”on floristic collections of China,and investigated its relationships with various environmental and socio-economic variables.Species occurrence records mainly distributed in major mountain ranges,while lowlands were underrepresented.The distance of species occurrence records to the nearest road decreased from 19.54 km in 1960s to 3.58 km in 2010s.These records showed significant clustering within 5 km and 10 km buffer zones of roads.The road density surrounding these records was significantly higher than that in random patterns.Collectively,our results confirmed a significant“road-map effect”in the floristic collections of China,and this effect has substantially intensified from the 1960s to the 2010s,even after controlling for the impact of road network expansion.Topographic,climatic and socio-economic variables that determine regional species diversity,vegetation cover and human impact on vegetation played crucial roles in predicting the intensity of the“road-map effect”.Our findings indicate that biological surveys have become increasingly dependent on road networks,a trend rarely reported in published studies.Future floristic surveys in China should prioritize the lowland areas that have experienced stronger human disturbances,as well as remote areas that may harbor more unique and rare species.
文摘目的分析“一带一路”视域下药食两用本草桑叶的研究现状及热点,为进一步开发利用中药材提供思路。方法以国内权威数据库中国知网(CNKI)、维普(VIP)、万方(Wanfang)和国外权威数据库Web of Science(WOS)为文献来源,借助COOC和VOSviewer软件对我国“一带一路”区域省市及“一带一路”沿线国家在2013年1月—2024年9月发表的桑叶相关科学研究进行检索和分析,并绘制知识图谱。结果共检索到桑叶中文相关科学研究文献520篇,涉及我国“一带一路”18个省市,以及桑叶英文相关科学研究文献219篇,涉及中国和17个“一带一路”沿线国家。其中,中文研究数量整体呈下降趋势,而英文呈逐步增长趋势。研究区域上,“丝绸之路经济带”(一带)以新疆、重庆为代表,“21世纪海上丝绸之路”(一路)以广东、浙江为代表;“一带一路”沿线国家以巴基斯坦、马来西亚为代表。主要收录期刊有《实用中医内科杂志》《食品科学》、Molecules、Journal of Ethnopharmacology;涉及学科方向主要为中药学、中医学、食品科学。研究热点上,我国“一带”区域13个省市主要围绕桑叶活性成分提取、检测、药理作用及药用桑叶进行研究,“一路”区域5个省市注重于桑叶临床研究、数据挖掘、配伍规律及桑叶茶的研究;国际上我国及“一带一路”沿线国家研究热点为桑叶黄酮和1-脱氧野尻霉素、治疗糖尿病机制、网络药理学、肠道菌群。结论“一带一路”视域下桑叶研究主要集中于有效成分提取、含量测定、药理作用、临床研究、数据挖掘、配伍规律、桑叶茶和治疗糖尿病机制等,在医药和食品方面有潜在价值。
