Landslides, rockfall and ground subsidence are main types of geological hazards in Zhenjiang City, which cause considerable loss of lives and properties and have affected local economic and social development. 主要地质灾害为滑坡、崩塌和地面塌陷,已造成了大量经济损失和人员伤亡,制约了当地的经济和社会的可持续发展。
Water hyacinth ( Eichhornia crassipes) is an invasive alien weed, whose invasions not only threaten native biodiversity and ecosystems but also cause considerable economic loss. 凤眼莲(Eichhorniacrassipes)是一种外来恶性杂草,它的入侵不仅威胁到土著的生物多样性和生态系统,而且还导致巨大的经济损失。