Urban zones

RELIABLE DATA AT THE SERVICE OF LOCAL AUTHORITIES FOR THE MANAGEMENT OF URBAN SPACES.

The urban and peri-urban environment is a particularly complex environment due to the diversity of land use and occupation. These spaces, which are home to a variety of activities, are at the crossroads of many societal issues (space consumption, biodiversity, water resources, landscapes, ecosystem services, etc.). This requires communities to plan and implement arrangements adapted to these issues. The Cassia® approach offers a decision support tool that makes it possible to optimise, in terms of cost/benefit ratio, the management of green spaces, ornamental vegetation in landscaping, but also abandoned land and spaces belonging to the third landscape (wasteland, land margins, embankments, borders, etc.). For example, the Cassia® approach enables to provide the following services:

INVENTORY OF AVENUE TREES

Trees are the pillar of many ecosystem services in the urban environment (“urban heat islands”, aesthetic appeal, support for biodiversity, etc.) while being subject to many constraints: disease, urban renewal, etc.

Cassia® allows mapping, identifying and therefore accurately tracking trees along avenues.
Having access to precise cartography enables both a better risk management and gives communication means toward stakeholders (local residents, contractors, etc.).

The example presented here shows the detection of vegetation in an urban environment and the identification of avenuee trees (in red) by cross-referencing this map with cadastral data.

Photo credit : ©IGN 2019.

IDENTIFICATION AND MAPPING OF TREE SPECIES

The Cassia® approach also makes it possible to identify different tree species.
Knowing the species planted enables a better risks management (e.g. pollen allergies) and a better response to the challenges of global warming.
The example presented here shows the detection of avenue trees (see previous example) and then the recognition of certain species (hackberry in orange, plane tree in purple, etc.).

Photo credit : © IGN 2019.