Skip to Main content Skip to Navigation
Master Thesis

Élaboration d’une méthode de délimitation et de caractérisation des têtes de bassin versant de la Vilaine par approche cartographique : application aux bassins versants de l'Aff et du Don

Abstract : Considering the actual terrestrial water ecosystems state of decay, managers wish to improve their knowledges on headwater systems. Small and numerous, headwater streams and wetlands may have a critical influence on the entire watershed. This study initiates the process of taking into account the headwaters of the SAGE Vilaine territory. In this issue, GIS methods for the delineation and the characterisation of headwaters have been elaborated and applied on two first watersheds: the “Aff” and the “Don”. More than 70% of their total surface is covered by headwater small watersheds. From the characterisation criteria, several explanatory analyses intended to describe the variability of these headwaters and underline their link with management issues. Classifications based on morphology and land use show particular groups characterised by superior vulnerabilities or specific environmental issues. Also, it underlines the opportunity to use those areas to aim the restoration goals of some considered water bodies in a better way. However, the database that has been built is lacking on several types of data and the validity of the proposed criteria and classes needs to be verified. A second level of characterization is proposed at the scale of smaller watersheds, expecting more accurate and more suitable criteria that could bring to a proper prioritization.
Document type :
Master Thesis
Complete list of metadatas

Cited literature [25 references]  Display  Hide  Download

https://dumas.ccsd.cnrs.fr/dumas-01631603
Contributor : Agrocampus Ouest <>
Submitted on : Thursday, November 9, 2017 - 2:58:14 PM
Last modification on : Monday, July 6, 2020 - 3:38:22 PM
Long-term archiving on: : Saturday, February 10, 2018 - 2:36:02 PM

File

2017_Cirou_Julien _GE-PAMEQ.pd...
Files produced by the author(s)

Identifiers

  • HAL Id : dumas-01631603, version 1

Collections

Citation

Julien Cirou. Élaboration d’une méthode de délimitation et de caractérisation des têtes de bassin versant de la Vilaine par approche cartographique : application aux bassins versants de l'Aff et du Don. Ecologie, Environnement. 2017. ⟨dumas-01631603⟩

Share

Metrics

Record views

65

Files downloads

785