RIDOT Salt Tolerant Tree and Shrub Guide

摘要

Access and knowledge of a salt tolerant plant list is critical for Rhode Island highways. Rhode Island has a number of unique environmental characteristics that make roadside plantings difficult to establish. These include road salt runoff and salt spray from both highways and ocean breezes. The presence of roadside vegetation has many functions that serve highway users and the state. This study reviewed the literature available on salt tolerant trees and shrubs and consulted associated professionals for recommendations on those plant species viable for Rhode Island. The study also reviewed existing roadside plantings in the state of Rhode Island identified by the RIDOT landscape division for their success in establishing in difficult salt stressed environments. The accompanying guide provides a list of salt tolerant trees and shrubs found in the literature review which are suitable to the Rhode Island climate. The salt tolerant plants are divided into lists by salt tolerance, plant characteristics, and groups associated by light and moisture requirements. This manual is a tool for RIDOT landscape and engineering personnel to help select plants for roadside use in Rhode Island.