Abstract
The objectives of this study were to determine how landscape patterns in Georgia, USA have changed through time and whether the spatial patterns varied by physiographic region. Historical aerial photography was used to analyze spatial patterns of land use from the 1930's to the 1980's. Land use patterns were quantified by: (1) mean number and size of patches; (2) fractal dimension of patches; (3) amount of edge between land uses; and (4) indices of diversity, dominance, and contagion. Forest cover increased in aerial extent and in mean patch size. The mean size of agricultural patches increased in the coastal plain and decreased in the mountains and piedmont. Edges between land uses decreased through time, indicating less dissection of the landscape. Fractal dimensions also decreased, indicating simpler patch shapes. Indices of diversity and dominance differed through time but not among regions; the contagion index differed among regions but not through time. A geographic trend of decreasing diversity and increasing dominance and contagion was observed from the mountains to the lower coastal plain. Landscape patterns exhibited the greatest changes in the piedmont region. Overall, the Georgia landscape has become less fragmented and more connected during the past 50 years. Changing patterns in the landscape may have implications for many ecological processes and resources.
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References
Anderson, J.R., Hardy, E.E., Roach, J.T. and Witmer, R.E. 1976. A land use and land cover classification for use with remote sensor data. US Geological Survey Prof. Paper No. 964, Washington, D.C.
Bond, W.E. and Spillers, A.R. 1935. Use of land for forests in the lower Pidemont region of Georgia. South Forest Exp. Sta. Occas. Paper 53.
Brender, E.V. 1952. From forest to farm to forest again. Am. For. 58(1): 24–25, 40–41, 43.
Brender, E.V. 1974. Impact of past land use on the lower Piedmont forest. J. For. 72: 34–36
Burgess, R.L. and Sharpe, D.M. (eds.) 1981. Forest island dynamics in man-dominated landscapes. Springer-Verlag, New York.
Burrough, P.A. 1986. Principles of geographical information systems for land resources assessment. Clarendon Press, Oxford.
Fahrig, L. and Merriam, G. 1985. Habitat patch connectivity and population survival. Ecology 66: 1762–1768.
Forman, R.T.T. and Godron, M. 1986. Landscape ecology. John Wiley & Sons, New York.
Franklin, J.R. and Forman, R.T.T. 1987. Creating landscape patterns by forest cutting: Ecological consequences and principles. Lands. Ecol. 1: 5–18.
Freemark, K.E. and Merriam, H.G. 1986. Importance of area and habitat heterogeneity to bird assemblages in temperate forest fragments. Biol. Conserv. 36:115–141.
Gardner, R.H., Milne, B.T., Turner, M.G. and O'Neill, R.G. 1987. Neutral models for the analysis of broad scale landscape patterns. Lands. Ecol. 1: 19–27.
Georgia Department of Natural Resources. 1974. Vegetation resource inventory, the Georgia resource assessment program: User's guide. Atlanta, Georgia.
Hartman, W.A. and Wooten, H.H. 1935. Georgia land use problems. Georgia Exp. Sta. Bull. 191.
Healy, R.G. 1985. Competition for land in the American south. The Conservation Foundation, Washington, D.C.
Henderson, M.T., Merriam, G. and Wegner, J. 1985. Patchy environments and species survival: chipmunks in an agricultural mosaic. Biol. Conserv. 31: 95–105.
Hoover, S.R. 1986. Comparative structure of landscapes across physiographic regions of Georgia. Masters Thesis, University of Georgia, Athens.
Johnson, W.C. and Sharpe, D.M. 1976.An analysis of forest dynamics in the north Georgia piedmont. For. Sci. 22: 307–322.
Kesner, B.T. 1984. The geography of nitrogen in an agricultural watershed: A technique for the spatial accounting of nutrient dynamics. Masters Thesis, University of Georgia, Athens.
Krummel, J.R., Gardner, R.H., Sugihara, G. and O'Neill, R.V. 1987. Landscape patterns in a disturbed environment. Oikos 48: 321–324.
Mandelbrot, B.B. 1983. The fractal geometry of nature. W.H. Freeman & Co., New York.
Milne, B.T. 1988. Measuring the fractal geometry of landscapes. Appl. Math. Comp. In press.
Nelson, T.C. 1957. The original forests of the Georgia piedmont. Ecology 38: 390–396.
Odum, E.P. and Turner, M.G. The Georgia landscape: a changing resource. In Trends in Landscape Ecology. Edited by I.S. Zonneveld and R.T.T. Forman. Springer-Verlag, New York. In press.
O'Neill, R.V., Krummel, J.R., Gardner,R.H., Sugihara, G., Jackson, B., DeAngelis, D.L., Milne, B.T., Turner, M.G., Zygmunt, B., Christensen, S.W., Dale, V.H. and Graham, R.L. Indices of landscape pattern. Lands. Ecol.: In press.
Peterjohn, W.T. and Correll, D.L. 1984. Nutrient dynamics in an agricultural watershed: observations of the role of a riparian forest. Ecology 65: 1466–1475.
Plummer, G.L. 1975. 18th century forests in Georgia. Bull. Georgia Acad. Sci. 33: 1–19.
Risser, P.G., Karr, J.R. and Forman, R.T.T. 1984. Landscape ecology: directions and approaches. Illinois Natural History Survey Spec. Pub. No. 2, Champaign, Illinois.
SAS Institute. 1982. SAS User's Guide: Statistics. SAS Institute Inc, Cary, North Carolina.
Shannon, C.E. and Weaver, W. 1962. The mathematical theory of communication. University of Illinois Press, Urbana.
Sharpe, D.M., Guntenspergen, G.R., Dunn, C.P., Leitner, L.A. and Stearns, F. 1987. Vegetation dynamics in a southern Wisconsin agricultural landscape. In Landscape Heterogeneity and Disturbance, pp. 137–155. Edited by M.G. Turner. Springer-Verlag, New York.
Stewart, O.C. 1956. Fire as the first great source employed by man. In Man's Role in Changing the Face of the Earth. pp. 115–184. Edited by W.L. Thomas. University of Chicago Press, Chicago.
Turner, M.G. (ed.) 1987a. Landscape Heterogeneity and Disturbance. Springer-Verlag, New York.
Turner, M.G. 1987b. Land use changes and net primary production in the Georgia, USA, landscape: 1935–1982. Environ. Manage. 11: 237–247.
Turner, M.G., Costanza, R., Springer, T.M. and Odum, E.P. 1988. Market and nonmarket values of the Georgia landscape. Environ. Manage. 12.
Turner, M.G., O'Neill, R.V., Gardner, R.H. and Milne, B.T. Effects of changing spatial scale on the analysis of landscape pattern. Ecology. Submitted.
Urban, D.L., O'Neill, R.V. and Shugart, H.H. 1987. Landscape ecology, a hierarchical perspective. BioScience 37: 119–127.
Van Dorp, D. and Opdam, P.F.M. 1987. Effects of patch size, isolation and regional abundance on forest bird communities. Lands. Ecol. 1: 59–73.
White, F.C., Hairston, J.R., Musser, W.N., Perkins, H.F. and Reed, J.F. 1981. Relationship between increased crop acreage and nonpoint-source pollution: a Georgia case study. J. Soil Water Conserv. 36: 172–177.
Wiens, J.A., Crawford, C.S. and Gosz, J.R. 1985. Boundary dynamics: a conceptual framework for studying landscape ecosystems. Oikos 45: 421–427.
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Turner, M.G., Ruscher, C.L. Changes in landscape patterns in Georgia, USA. Landscape Ecol 1, 241–251 (1988). https://doi.org/10.1007/BF00157696
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DOI: https://doi.org/10.1007/BF00157696