采用科睿唯安(Clarivate Analytics)的Web of Science(WOS)核心数据库中Science Citation Index Expanded(SCIE)子库数据,通过文献计量学方法对发文量、篇均被引频次、重点国家、高发文机构和高发文期刊等指标进行分析,结果显示,植物保...采用科睿唯安(Clarivate Analytics)的Web of Science(WOS)核心数据库中Science Citation Index Expanded(SCIE)子库数据,通过文献计量学方法对发文量、篇均被引频次、重点国家、高发文机构和高发文期刊等指标进行分析,结果显示,植物保护学科发文量10年间大体呈现平稳增长趋势,平均增长率为6.42%。中国是发文Top10国家之一,中国农业科学院也跻身Top10重要机构之一,但发文影响力均显不足。在Top10高发文期刊中美国占据5席,英国占据3席,瑞士2席。国家自然科学基金委员会是Top10发文资助机构中资助发文量最多的单位。展开更多
A large number of lacustrine sedimentary records indicate that global warming is the main factor leading to significant changes in diatom communities in lakes of the northern hemisphere.However,due to the intensificat...A large number of lacustrine sedimentary records indicate that global warming is the main factor leading to significant changes in diatom communities in lakes of the northern hemisphere.However,due to the intensification of human activities since 1850,some scholars have emphasized that the increasing lake trophic level may be the main reason for the changes in diatom communities.The debate is ongoing.In order to avoid falling into the complex relationship between diatom changes and the seasonal cycle that characterizes lakes in mid and high latitudes,we chose a lake located at a low latitude,where the relationship between diatoms and temperature is not indirect but direct.The diatom record spans the past ca.100 years and reveals that the abundance of Aulacoseira granulata increased from 1900 until 1985,replacing the previously dominant Aulacoseira ambigua.These changes are in agreement with the increasing trend in global temperature.Since 1985,the percentages of the small-celled Discostella stelligera and the benthic diatom Navicula heimansioides have increased,while Aulacoseira granulata has decreased.This latest shift is caused by further global warming.We conclude that warming is the main factor leading to changing diatom communities in Douhu Lake.展开更多
文摘采用科睿唯安(Clarivate Analytics)的Web of Science(WOS)核心数据库中Science Citation Index Expanded(SCIE)子库数据,通过文献计量学方法对发文量、篇均被引频次、重点国家、高发文机构和高发文期刊等指标进行分析,结果显示,植物保护学科发文量10年间大体呈现平稳增长趋势,平均增长率为6.42%。中国是发文Top10国家之一,中国农业科学院也跻身Top10重要机构之一,但发文影响力均显不足。在Top10高发文期刊中美国占据5席,英国占据3席,瑞士2席。国家自然科学基金委员会是Top10发文资助机构中资助发文量最多的单位。
基金funded by a granted from National Key R&D Program of China(Grant No.2017YFA0603400)the National Basic Research Program of China(Grant No.2015CB953801)the National Natural Science Foundation of China(Grant No.41772379)。
文摘A large number of lacustrine sedimentary records indicate that global warming is the main factor leading to significant changes in diatom communities in lakes of the northern hemisphere.However,due to the intensification of human activities since 1850,some scholars have emphasized that the increasing lake trophic level may be the main reason for the changes in diatom communities.The debate is ongoing.In order to avoid falling into the complex relationship between diatom changes and the seasonal cycle that characterizes lakes in mid and high latitudes,we chose a lake located at a low latitude,where the relationship between diatoms and temperature is not indirect but direct.The diatom record spans the past ca.100 years and reveals that the abundance of Aulacoseira granulata increased from 1900 until 1985,replacing the previously dominant Aulacoseira ambigua.These changes are in agreement with the increasing trend in global temperature.Since 1985,the percentages of the small-celled Discostella stelligera and the benthic diatom Navicula heimansioides have increased,while Aulacoseira granulata has decreased.This latest shift is caused by further global warming.We conclude that warming is the main factor leading to changing diatom communities in Douhu Lake.
