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RESEARCH ARTICLE
Contents Vol 16(3)

Wildland–urban interface housing growth during the 1990s in California, Oregon, and Washington

Roger B. Hammer A E , Volker C. Radeloff B , Jeremy S. Fried C and Susan I. Stewart D
+ Author Affiliations
- Author Affiliations

A Department of Sociology, Oregon State University, Corvallis, OR 97331, USA.

B Department of Forest Ecology and Management, University of Wisconsin, Madison, WI 53706, USA.

C Pacific Northwest Research Station, USDA Forest Service, Portland, OR 97208, USA.

D North Central Research Station, USDA Forest Service, Evanston, IL 60201, USA.

E Corresponding author. Email: rhammer@oregonstate.edu

International Journal of Wildland Fire 16(3) 255-265 https://doi.org/10.1071/WF05077
Submitted: 17 August 2005  Accepted: 22 August 2006   Published: 3 July 2007

Abstract

In the present study, we examine housing growth in California, Oregon, and Washington in the wildland–urban interface (WUI), the area where homes and other structures abut or intermingle with wildland vegetation. We combine housing density information from the 1990 and 2000 USA censuses with land cover information from the 1992/93 National Land Cover Dataset to demarcate the location and extent of the WUI and its growth, both in terms of area and number of housing units during the 1990s. We overlay the WUI with coarse-scale fire regime condition class information to evaluate implications for wildland fire management. During the 1990s, WUI area in the three-state region increased by 5218 km2 (10.9%) to nearly 53 000 km2 and the number of housing units in the WUI increased over 1 million units (17.6%) and in 2000 encompassed 6.9 million units, 43% of all housing in the region. Over a million new homes were constructed in the WUI, comprising 61% of the new homes constructed in the region. By 2000, there was far more intermix WUI (75% of the WUI area and 64% of the WUI housing units) than interface WUI. Expansion of the WUI accounted for only 13% of WUI housing unit growth and WUI that existed in 1990 encompassed 98% of WUI housing units in 2000. In 2000, there were nearly 1.5 million WUI housing units in areas with 0–35-year fire return intervals and 3.4 million in areas with 35–100+ year fire return intervals. In both these fire regimes, the majority of WUI housing units (66% and 90% respectively) are in areas with a current condition outside the historic range of variability. Housing growth patterns in this three-state region are exacerbating wildland fire problems in the WUI. Any long-term solution to wildland fire issues in the western United States will have to address housing growth patterns. Using a consistent, nationally applicable assessment protocol, the present study reveals the vast extent of WUI in the west coast states and its growth in the 1990s, and provides a foundation for consistent monitoring efforts.


Acknowledgements

We are grateful for the comments provided by two anonymous reviewers, which significantly improved this manuscript and for financial support provided by the USDA Forest Service through two sources: the Pacific Northwest Research Station’s Forest Inventory and Analysis Programme and the North Central Research Station via the National Fire Plan and the Northern Global Change Programme.


References


Agee K (1993) ‘Fire ecology of Pacific Northwest Forests.’ (Island Press: Washington, DC)

Bailey RG (1995) ‘Ecosystem geography.’ (Springer: New York)

Benfield FK, Raimi M, Chen D (1999) ‘Once there were greenfields: how urban sprawl is undermining America’s environment, economy, and social fabric.’ (Natural Resources Defense Council: Washington, DC)

Brown JK (1994) Fire regimes and their relevance to ecosystem management. In ‘Proceedings of the 1994 Society of American Foresters/Canadian Institute of Forestry Convention; 18–22 September 1994, Anchorage, AK’. pp. 171–178. (Society of American Foresters: Bethesda, MD)

Cardille JA, Ventura SJ , Turner MG (2001) Environmental and social factors influencing wildland fires in the Upper Midwest, United States. Ecological Applications  11, 111–127.
| Crossref | GoogleScholarGoogle Scholar | Cohen J (1999) ‘Reducing the wildland fire threat to homes: where and how much?’ USDA Forest Service, Pacific Southwest Research Station General Technical Report PSW-GTR-173. (Albany, CA)

Cromartie J (1999) Higher inmigration, lower outmigration contribute to non-metro population growth. Rural Conditions and Trends  7, 13–17.
Daniels T (1999) ‘When city and country collide: managing growth in the metropolitan fringe.’ (Island Press: Washington, DC)

Franklin J, Syphard AD, He HS , Mladenoff DJ (2005) Altered fire regimes affect landscape patterns of plant succession in the foothills and mountains of southern California. Ecosystems  8, 885–898.
| Crossref | GoogleScholarGoogle Scholar | Fried JS, Bolsinger CL, Beardsley D (2004) ‘Chaparral in southern and central coastal California in the mid-1990s: area, ownership, condition, and change.’ USDA Forest Service, Pacific Northwest Research Station PNW-RB-240. (Portland, OR)

Hammer RB, Radeloff VC (2006) ‘Reconciliation of 1990 and 2000 Census block boundaries: housing unit location-based spatial interpolation.’ Center for Demography and Ecology working paper 2006–02. Available at http://www.ssc.wisc.edu/cde/cdewp/ [Verified 11 June 2007]

Hammer RB, Stewart SI, Radeloff VC , Winkler R (2004) Characterizing spatial and temporal residential density patterns across the US Midwest, 1940–1990. Landscape and Urban Planning  69, 183–199.
| Crossref | GoogleScholarGoogle Scholar | NIFC (2006) ‘Wildland fire statistics: total wildland fires and acres (1960–2005).’ (NIFC: Boise, ID)

Radeloff VC, Hammer RB, Voss PR, Hagen AE, Field DR , Mladenoff DJ (2001) Human demographic trends and landscape level forest management in the north-west Wisconsin Pine Barrens. Forest Science  47, 229–241.
Rehm RG, Hamins A, Baum HR, Megrattan KB, Evans DD (2001) Community-scale fire spread. In ‘Proceedings of California’s 2001 Wildland Fire Conference: 10 years after the 1991 East Bay Hills Fire’. Oakland California Technical Report 35.01.462. (University of California Forest Products Laboratory: Richmond, CA)

Sapsis D (1999) ‘Development patterns and fire suppression.’ California Department of Forestry and Fire Protection Fire and Resource Assessment Program. (Sacramento, CA)

Schmidt KM, Menakis JP, Hardy CC, Hann WJ, Bunnell DL (2002) ‘Development of coarse-scale spatial data for wildland fire and fuel management.’ USDA Forest Service, Rocky Mountain Research Station General Technical Report RMRS-GTR-87. (Fort Collins, CO)

Spero J (1997) ‘How will increased population affect wildland fire incidence: is ignition frequency in the Sierra Nevada related to population density?’ California Department of Forestry and Fire Protection Fire and Resource Assessment Program. (Sacramento, CA)

Stephenson NL (1999) Reference conditions for giant sequoia forest restoration: structure, process, and precision. Ecological Applications  9, 1253–1265.
| Crossref | GoogleScholarGoogle Scholar | Stewart SI, Radeloff VC, Hammer RB (2007) Defining the wildland–urban interface, Journal of Forestry, in press.

Stratton RD (2004) Assessing the effectiveness of landscape fuel treatments on fire growth and behavior. Journal of Forestry  102, 32–40.
Teie WC, Weatherford BF (2000) ‘Fire in the West: the wildland/urban interface fire problem.’ (Dear Valley Press: Rescue, CA)

US Census Bureau (1992) Census of Population and Housing, 1990: summary tape File 3 (Wisconsin) [machine-readable data files]. (US Bureau of the Census: Washington, DC)

US Census Bureau (2000) TIGER/Line Files [machine-readable data files]. (US Bureau of the Census: Washington, DC)

US Census Bureau (2002) Summary File 3A technical documentation. (US Bureau of the Census: Washington, DC)

USDA and USDI (2001) Urban–wildland interface communities within vicinity of federal lands that are at high risk from wildland fire. Federal Register  66, 751–777.
USDI and USDA (1995) ‘Federal wildland fire management policy and program review.’ (USDI and USDA: Washington, DC)

Vogelmann JE, Sohl TL, Campbell PV , Shaw DM (1998) Regional land cover chacterization using Landsat thematic mapper data and ancillary data sources. Environmental Monitoring and Assessment  51, 415–428.
| Crossref | GoogleScholarGoogle Scholar |

Wells ML, O'Leary JF, Franklin J, Michaelsen J , Mckinsey DE (2004) Variations in a regional fire regime related to vegetation type in San Diego County, California (USA). Landscape Ecology  19, 139–152.
| Crossref | GoogleScholarGoogle Scholar |

Winter G , Fried JS (2000) Homeowner perspectives on fire hazard, responsibility, and management strategies at the wildland–urban interface. Society & Natural Resources  13, 33–49.
| Crossref | GoogleScholarGoogle Scholar |