BIOLOGIC FUNCTIONS
Wildlife habitat: for flora and fauna that make up the richness and diversity of the natural world.
Photosynthesis: the flora turns solar power into biomass through photosynthesis.
Climate moderation: plants benefit local and global climate through evapostranspiration, covering os heat absorbing rocks, shade creation and by acting as carbon sinks. At the urban scale, features like street trees or green roofs can regulate the local climate.
Ecosystem restoration: often stunningly resilient, the biologic system restores the landscape after ecosystem disturbances.

PERFORMANCE METRICS
Biodiversity: measure of genetic diversity, species diversity (number and types of different species that inhabit an area or ecosystem) or ecosystem diversity (variety of habitat types or ecosystems found in a landscape).
Habitat connectivity: existence of biodiversity corridors linking the core protected areas of biodiversity. The corridors provide functional linkages between the cores by stimulating or allowing species migration . They can be continuous strips of land or "stepping stones" (patches of suitable habitat).
Edge-to interior ratio: edge refers to the outer boundary of a habitat parcel. It is in between a disturbed area and the "interior".
Health of an indicator species: health of a "charismatic macrofauna" which acts as an overall barometer of ecosystem and biologic health.
Vertical diversity of parcels.
EPA HEP analysis

CASE STUDIES: PLANNING AND POLICY
Seattle Urban Nature Project(mapping habitat types on public lands over Google Maps)

CASE STUDIES: HIGH PERFORMANCE LANDSCAPES

BIOLOGIC SYSTEM RESOURCES
Alliance for Community Trees