Glossary of Terms

Block group: A neighborhood, or more specifically, a cluster of blocks within a US Census tract.

Children (0-17): Percentage of children, ages 0 to 17 years of age, in a block group.

Climate-related health risk: High, moderate and low numbers of hospitalizations and emergency room visits for conditions that are exacerbated by a changing climate. The conditions combined in this measure include diabetes, mental health, asthma and other respiratory issues, heart and kidney diseases.

Dependency Ratio: Seniors (age 65+) and children (0-17) as a proportion of working age adults (18-64).

Health Equity Zone: Geographic areas in Rhode Island where existing opportunities emerge and investments are made to address differences in health outcomes. Through a collaborative, community-led process, each Health Equity Zone conducts a needs assessment and implements a data-driven plan of action to address the unique social, economic and environmental factors preventing people from being as healthy as possible.

Flood risk : An estimate of high (100-year flood zone), moderate (500-year flood zone), and low flood risk based on FEMA flood designations.

Impact assessment: An estimate of the benefit new trees would have within an area. Benefits included in TESA include:

  • Heat reduction
  • Energy savings
  • Flood management
  • Air quality
  • Public health
  • Economic vitality
  • Social equity
  • Carbon sequestration

Municipality: A city or town with its own government.

Ownership: An estimation of public or private ownership of property based on land use codes provided by CoreLogic.

Parcel: A legally- defined area of land that is privately- or publicly-owned.

People of Color: Percentage of people in a block group that are Black or African American, American Indian or Alaska Native, Asian, Native Hawaiian or Other Pacific Islander, and includes all people classified as Hispanic by the Census Bureau.

People in Poverty: Percentage of people in a block group living on incomes below 200% of the federally-designated poverty line.

Priority Index: Five equally-weighted climate and socio-economic characteristics that are integrated into the Tree Equity Score. These widely-available characteristics include:

  • Percentage of people who are unemployed
  • Percentage of people living below 200% of of the poverty level
  • Percentage of people of color
  • Percentage of children and seniors who are categorized as “dependents”
  • Urban heat island severity

Senior (65+): Percentage of seniors, ages 65 and older, in a block group.

Tree canopy cover: This is the footprint of trees, when viewed from above the trees- the bird's eye view of tree crowns (leaves, branches and stems).

Tree canopy gap: The difference between the percentage of tree canopy cover and tree canopy goal.

Tree canopy goal: The percentage of tree canopy recommended for a particular neighborhood, city, or region based on natural biom and population density.

Tree Equity Score: An indicator of whether an area has a sufficient amount of tree canopy cover distributed in a way that all residents can experience the climate, health and other benefits that trees provide.

Unemployment rate: Percentage of the labor force that do not have a job, are available, and looking for one).

Urbanized area: A densely-settled core of block groups that are populated by 50,000 people or more, as defined by the US Census Bureau.