摘要
植物标本是植物学家长期从事科研活动的积累和人类自然遗产的永久记录之一,是研究物种的分布及其历史、现状、系统演化的证据。为了分析我国杜鹃花科植物标本地理采集偏差问题,本研究基于国家标本资源共享平台收录的149559份中国杜鹃花科植物标本,在筛选校对后,以县级行政单位为分类单元,分析我国杜鹃花科标本采集现状,并对杜鹃花科植物标本采集质量进行评估,分析了中国杜鹃花科植物物种丰富度的分布格局及影响其分布的气候因子之间的关系。结果显示杜鹃花科植物标本采集较为完整的县级行政区集中分布于长江以南地区以及西南地区,东北、西北及东部地区相对较少;两种评估方法对标本采集完整性的结果具有一定的相关性,但斜率法更具科学性;斜率法结果显示虽某些地区采集数目较多,如横断山区,但仍有部分地区采集不完整,即区域内部分县仍存在未被采集的种类;昼夜温差与年温差比值(Bio3)、年温度变化范围(Bio7)、年平均雨量(Bio12)及最暖季度平均雨量(Bio18)等气候因子与杜鹃花科植物物种丰富度呈现显著的线性相关,其中Bio7与观察物种丰富度、估计物种丰富度、估计与观察物种丰富度的差值等3个物种丰富度呈负相关,Bio3、Bio12及Bio18与3个物种丰富度呈正相关;能量因子对物种丰富度的解释率高于水分因子,并且二者的单独解释率均低于二者共同作用的解释率。以上结果表明,我国各地区采集完整性地理偏差严重,,故我国标本采集工作仍需改进;气温稳定性对杜鹃花科植物物种空间分布格局的影响最为显著,水分与能量共同决定杜鹃花科植物物种丰富度格局。
Plant specimen is one of the permanent records of botanists’ long-term research activities and human natural heritage, which are evidence for studying the distribution of species and their history, current situation and systematic evolution.In order to analyze the geographical sampling bias of ericaceae in China.After screening and proofreading of 149559 plant specimens from National Specimen Information Infrastructure, we analyzed the status quo of specimen collection of ericaceae in China and quantified collection integrity at country level based on two approaches. Besides, we also analyzed relationship between the distribution of species richness pattern of Chinese ericaceae and the climatic factors related. The results showed that the counties administrative region with complete collection of ericaceae plants was mainly distributed in the south and southwest regions of the Yangtze river, while the northeast, northwest and eastern regions were relatively few. The two evaluation methods have a certain correlation to the results of specimen collection integrity, but the slope method is more scientific.The results of the slope method show that although there are many collections in some areas like Hengduan Mountains area, there are still some incomplete collections in some areas, that is, some counties still have some uncollected species.Climatic factors such as isothermality(Bio3), annual temperature range(Bio7), annual precipitation(Bio12) and precipitation of warmest quarter(Bio18)are significantly linearly related to species richness of ericaceae. Specifically speaking, Bio7 was negatively correlated with three species richness, record of species richness, estimated species richness based on chao1 and the difference between the two species richness mentioned before, while Bio3, Bio12 and Bio18 are positively correlated with them.The interpretation rate of energy factor is higher than that of water factor and their own interpretation rate is lower than that of their combined action.Based on the results, we found that it is necessary to improve specimen collection in China and the temperature stability has the most significant influence on the spatial distribution pattern of ericaceae species. Water and energy determine the species richness pattern of ericaceae together.
作者
张玉雪
任敏
肖翠
Zhang Yuxue;Ren Min;Xiao Cui(Center for Agricultural Resources Research,Chinese Academy of Sciences Shijiangzhuang,Hebei 050021,China;College of resources and environment,Anhui Agricultural University,Hefei,Anhui 230036,China;Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China)
出处
《科研信息化技术与应用》
2018年第5期72-83,共12页
E-science Technology & Application
基金
国家标本资源共享平台(2005DKA21400)
中国植物主题数据库(DKA2017–12–02–11)
关键词
标本采集完整程度
采集地理偏差
气候因子
分布格局
degree of specimen collection integrity
collecting geographical bias
climatic factors
distribution pattern
