1 / 20

Wetland Digitization and Inventory

Wetland Digitization and Inventory. Definition (Mitsch and Gosselink 2007): A ‘ wetland Inventory ’ may be defined as: “the determination of the location and extent of wetlands” Definition (Ramsar 2005):

gregory-pallas
Télécharger la présentation

Wetland Digitization and Inventory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Wetland Digitization and Inventory Definition (Mitsch and Gosselink 2007): A ‘wetland Inventory’ may be defined as: “the determination of the location and extent of wetlands” Definition (Ramsar 2005): “ The compilation of data about a wetland’s main biophysical features namely: soil, geology, surface area, water regime and water chemistry etc as well as management features such as land use, goods and services.”

  2. INTRODUCTION Type of Information required: • Objective/s of the inventory • Wetland definition • Classification systems used • Method/s of data collection

  3. METHODOLOGY Wetland Classification: • Analysis of land use map series of Mauritius • Analysis of the Ramsar Wetland Classification Scheme and Regional wetland classification systems such as that used in the Southern African Development Community (SADC) • Landscape Unit approach used by Dugan (1990) Wetland Digitization: • Land use map series at 1: 25,000 scale (GOM-OS 1991) • Classification units • ArcGIS™ software

  4. Methodology (Cntd) Collection of wetland attributes’ data: • Wetland names • Wetland classification • Soil maps • Underlying geology • Climate • Mean elevation • Surface area • Geographic location

  5. RESULTS Wetland Classification: • Eight (8) ecological units were defined: • Marine coasts • Estuarine • Floodplains • Marsh/Swamp • Lacustrine • Depressions • Mangroves • Reservoirs

  6. Results (Cntd) Wetland Digitization: 129 wetland polygons and 144 point features

  7. Results (cntd) • Wetland Attribute Table (129 wetland polygons)

  8. CONCLUSIONS • Total surface area of 129 digitized wetland polygons = 18.35 km2, • S.A. of inland natural wetlands = 7.08 km2 ~ 0.38% of total S.A. of Mauritius, • Marsh/Swamp ecological unit most widely distributed (50), • Most wetlands are situated in the North, East and South- East of the Island, • GIS, primary tool in the digitization and collection of wetland attributes data, • GIS wetland database may be used as a platform for addition of more accurate data, • Proper conservation and protection measures are required to preserve the ecological integrity of wetlands and stop their destruction.

More Related