Alberta Cities at the Crossroads: Urban Development Challenges and Opportunities in Historical and Comparative Perspective
Notice bibliographique
Résumé
Fuelled by the province’s booming energy sector, Alberta’s two largest cities have experienced unprecedented levels of growth. As a result, they face a choice about how to best accommodate their expanding populations — whether to grow out or grow up. For decades, Calgary and Edmonton accommodated almost all growth through the former, suburban expansion. Indeed, the postwar period was marked by a focus on contiguous outward growth to ensure housing affordability and the efficient use of infrastructure, a policy that was widely supported by both the public and the development industry. In Calgary, at least, this has started to change. Beginning in the late 1990s, the city shifted its focus to livability and sustainability, a move that saw policies introduced to promote urban intensification and greater transit use. While this shift has proven popular in many quarters, it also has its fair share of detractors, including many in the development industry. In Edmonton, a city where growth has been relatively slower and authority over urban development dispersed among several local governments, this policy shift has not occurred. Although it is too early to see clear results from this policy shift, a spatial analysis shows that the density of Calgary’s built-up urban area increased in the first decade of the 21st century. Relatively high-density suburban growth led Calgary to consume less land compared with the previous decade (2 ha per 100 new residents in 2001–2011 versus 6.5 ha in 1991–2001). This growth was accompanied by modest intensification in core areas, although the dwelling unit density of the urban area increased by more than the population density (18 per cent versus 14 per cent). Edmonton’s development is roughly similar: denser suburban growth has led to the more efficient consumption of rural land (3 ha per 100 new residents in the 2001–11 period versus 7 ha in 1991–2001). The built-up area has also intensified slightly, especially in areas near transit stations. By way of comparison, Vancouver with its long-standing urban containment policies, including the expansion limits represented by the Agricultural Land Reserve, grew mostly through intensification between 1991 and 2011. In Toronto, the second comparator city examined and one in which local growth management policies have existed since the 1980s, growth is now almost equally divided between intensification and suburban expansion. The analysis suggests that it is difficult to alter a deep-seated policy regime that promotes outward growth. What is more, high levels of intensification may not be enough to offset the effects of a new demographic reality: smaller average household size because of such factors as longer lifespans, delayed family formation, family planning and divorce. So even with a greater number of housing units, the population of the built-up area may still fall. Finally, if the emerging polycentric structures of Calgary and Edmonton are to be successfully supported, major investments in infrastructure are going to be required.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,002 | 0,002 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».