The dead elms have been replaced by a row of saplings.

枯死榆树已被移去而换栽了一排幼树。

Ivela ochropoda is one of the main defoliator pest occurred in Ulmus pumila, and is very serious in Wuqi County.

摘要榆毒蛾是榆树害虫之一，在吴起县发严重。