Effects of fire on landscape heterogeneity in Yellowstone National Park, Wyoming

Journal of Vegetation Science - Tập 5 Số 5 - Trang 731-742 - 1994
Monica G. Turner1,2,3,4,5, William W. Hargrove2,3,4, Robert H. Gardner2,3,4, William H. Romme6
1Department of Zoology, Birge Hall, University of Wisconsin, Madison, WI 53706, USA
2Environmental Sciences Division
3Oak Ridge National Laboratory;
4P.O. Box 2008, Oak Ridge, TN 37831-6038, USA
5Tel. +1 608 262 2592
6Biology Department, Fort Lewis College, Durango, CO 81301, USA

Tóm tắt

Abstract. A map of burn severity resulting from the 1988 fires that occurred in Yellowstone National Park (YNP) was derived from Landsat Thematic Mapper (TM) imagery and used to assess the isolation of burned areas, the heterogeneity that resulted from fires burning under moderate and severe burning conditions, and the relationship between heterogeneity and fire size. The majority of severely burned areas were within close proximity (50 to 200 m) to unburned or lightly burned areas, suggesting that few burned sites are very far from potential sources of propagules for plant reestablishment. Fires that occurred under moderate burning conditions early during the 1988 fire season resulted in a lower proportion of crown fire than fires that occurred under severe burning conditions later in the season. Increased dominance and contagion of burn severity classes and a decrease in the edge: area ratio for later fires indicated a slightly more aggregated burn pattern compared to early fires. The proportion of burned area in different burn severity classes varied as a function of daily fire size. When daily area burned was relatively low, the proportion of burned area in each burn severity class varied widely. When daily burned area exceeded 1250 ha, the burned area contained about 50 % crown fire, 30 % severe surface burn, and 20 % light surface burn. Understanding the effect of fire on landscape heterogeneity is important because the kinds, amounts, and spatial distribution of burned and unburned areas may influence the reestablishment of plant species on burned sites.

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Tài liệu tham khảo

Anon, 1975, The natural role of fire: a fire management plan for Yellowstone National Park

Anon, 1991, Geographic resources analysis support system, version 4.0

Anon, 1992, SAS user's guide: statistics

10.1007/BF02940573

10.1071/WF9910119

Arno S.F., 1980, Forest fire history in the northern Rockies, J. For., 78, 460

10.2307/1310998

10.1038/334233a0

Despain D.G., 1991, Yellowstone Vegetation: Consequences of Environment and History

Despain D.G., 1977, Natural fire in Yellowstone National Park, West. Wildlands, 4, 20

Despain D. Rodman A. Schullery P.&Shovic H.1989.Burned area survey of Yellowstone National Park: the fires of 1988. Unpublished report Division of Research and Geographic Information Systems Laboratory Yellow‐stone National Park WY.

Fowells H.A., 1965, Silviics of forest trees of the United States

10.1007/BF02275262

10.2307/1311298

10.1016/0033-5894(73)90006-9

10.1016/0033-5894(73)90003-3

10.1016/0033-5894(82)90020-5

10.1109/PROC.1981.11918

10.2307/1935577

10.1007/978-1-4612-4742-5_4

10.2307/1311001

10.2307/1942524

10.1016/0033-5894(73)90007-0

Lyon L.J., 1976, Proc. Montana Tall Timbers Fire Ecology Conference and Fire and Land Management Symposium,, 355

10.2307/1311002

10.1007/BF00162741

10.1007/BF00125351

10.1139/x92-005

10.2307/1942611

10.2307/1311000

10.2307/1936706

10.2307/1308816

10.1111/j.1523-1739.1991.tb00151.x

10.2737/INT-GTR-304

Rowe J.S., 1983, The Role of Fire in Northern Circumpolar Ecosystems,, 135

10.1016/0033-5894(73)90008-2

Ryan K.C., 1985, Proceedings of the Symposium and Workshop on Wilderness Fire,, 230

10.1139/b87-299

10.1126/science.249.4972.1017

10.2307/1934205

Tinker D.B. Romme W.H. Hargrove W. W. Gardner R.H.&Turner M.G.In press.Landscape‐scale heterogeneity in lodgepole pine serotiny.Can. J. For. Res..

Turner M.G., 1990, Landscape changes in nine rural counties in Georgia, USA, Photogramm. Eng. Remote Sens., 56, 379

10.1007/BF02573948

10.1007/BF00157696

10.1007/BF00135079

Van Wagner C.E., 1983, The Role of Fire in Northern Circumpolar Ecosystems,, 65

Viereck L. A., 1983, The Role of Fire in Northern Circumpolar Ecosystems,, 201

10.1126/science.186.4163.487

10.1016/0033-5894(73)90002-1

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Journal of Vegetation Science

Tập 5 Số 5

731-742

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