摘要
本文基于野外调查及文献等资料,对湖南省口岸外来入侵植物的物种组成、生活型、原产地进行了分析,并探讨了入侵植物物种数与 口岸海拔、温度、降水量、货物吞吐量4个因子的相关性.结果表明:湖南口岸外来入侵植物共计66种,隶属于16科45属,以菊科(17种)、苋科(9种)、禾本科(8种)、豆科(5种)、车前科(5种)这五个大科为主.生活型上以草本植物入侵为主;原产地上以来源于美洲的外来入侵植物最多,其次是欧洲和亚洲.入侵植物物种数与口岸年均温呈正相关,随口岸年降水量和货物吞吐量的增加而呈上升趋势.本文对湖南口岸外来入侵植物的现状分析可为后续进出境植物检疫、有害植物监测、农业部门采取防控措施等工作提供切实依据.
Abstract
Based on field surveys and literatures,this paper analyzed the family composition,life form and origin of invasive alien plants at Hunan ports,and discussed the correlation between the number of invasive plant species and four factors(viz.,altitude,temperature,precipitation and cargo throughput of the ports).The results showed that a total of 66 species of invasive plants were recorded at Hunan ports,be-longing to 16 families and 45 genera.Asteraceae(17 species),Amaranthaceae(9 species),Gramineae(8 species),Leguminosae(5 species)and Plantaginae(5 species)were the largest families in these areas.The invasive plants at Hunan ports were mostly herbs and mainly originated from America,followed by Eu-rope and Asia.The species number of invasive plant is positively correlated with the annual average temperature of the ports,and it also tends to rise with the increase of the annual precipitation and cargo throughput of the ports.The analysis of the current situation of invasive alien plants at Hunan ports can provide a practical basis for the subsequent entry and exit phytosanitary,harmful plant monitoring,and pre-ventive and control measures taken by the agricultural sector.
基金项目
湖南省自然科学基金(2021JJ31152)
中华人民共和国长沙海关项目(90102-68228125)
NETL
NSTL
维普
万方数据