临澧县外来入侵植物的调查分析

Investigation and Analysis of Alien Invasive Plants in Linli County

近年来,外来入侵植物已对临澧县的生态安全和经济发展构成了严重的威胁。通过对临澧县外来入侵植物的种类、原产地、危害程度、重要值、出现频率等进行调查分析,了解临澧县的入侵植物的种类、分布和危害特点。结果表明:临澧县外来入侵植物共有48种,隶属于19科,其中菊科、苋科和玄参科为优势科,原产于美洲的有32种、欧洲15种、亚洲10种、非洲和大洋洲较少,危害最严重的是空心莲子草、水葫芦和加拿大蓬,需要引起重视并开展后续防控工作,以解决入侵植物对当地经济和生态的危害。

In recent years,alien invasive plants pose a serious threat to the ecological security and economic development of Linli County.Through the investigation and analysis of the species,origin,harm degree,important value and occurrence frequency of invasive alien plants in Linli County,we can understand the species,distribution and harm characteristics of invasive plants in Linli County.The results showed that there were 48 species of invasive plants in Linli County,belonging to 19 families.Compositae,Amaranthaceae and Scrophulariaceae were the dominant families.There were 32 species native to America,15 species to Europe,10 species to Asia,less to Africa and Oceania,and the most serious ones were Alternanthera philoxeroides,water hyacinth and Erigeron canadensis.Attention and follow-up work are needed to solve the problem of the harm of invasive plants to local economy and ecology.