Analysis of the current situation of invasive alien plants at Hunan ports
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.
Hunanportsinvasive alien plantsprevention and control measure
NETL
NSTL
万方数据
维普
