Author: Bethaney L. KrzysPublisher:
ISBN:
Category : Wetland mapping
Languages : en
Pages : 161
Book Description
Mahoning and Trumbull County, Ohio has an abundance of temporarily flooded, temporarily saturated, or seasonally flooded wet meadows, scrub/shrub, and forested roadside wetlands which are difficult to identify remotely but critical for resource management. This research evaluated several methods of wetland identification and combined the most accurate to produce a better method of remote wetland identification. Techniques evaluated include: visual interpretations of aerial and satellite images, satellite image classifications and GIS prediction. A visual interpretation was performed on: black and white and color aerial photographs; true color, near infrared, and mid infrared Landsat 7 ETM+ images; and a tassel cap transformation of Landsat 7 ETM+ images. A supervised and an unsupervised classification were performed on Landsat 7 ETM+ satellite imagery. GIS was used to predict wetland location based on factors of slope, soil type, water proximity, and National and Ohio Wetland Inventory maps. The methods were evaluated for accuracy using field verified wetland maps. All of the methods had difficulty in identifying roadside wetlands, but hydric soil data and color aerial interpretations proved the most successful.
