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According to the fractal theory,the spatial fractal character of coastline is preliminarily dis-cussed on the basis of GIS in this paper.Two aspects are considered:one is the length demarcation ofcoastline with different scales,and the other is the confirmation of existence of the fractal character on dif-ferent boundaries of tidal flats.Finally,some significant conclusions are drawn:(1)The coastline ofJiangsu Province has the fractal character and its dimension is 1.0696.(2)It conforms to the exponentialcorrelation between different lengths(L)of coastline and scales(k).It conforms to the formula lgL(k)=-1.029lgk+2.9544 in the continental coastline of Jiangsu province.(3)Different boundaries of a tidal flathave fractal characters,and different fractal dimensions indicate different comparative intensities of ero-sion and deposition on the tidal flat.(4)The reciprocity between land and sea may affect the value offractal dimension of a coastline,just as the lithology,substantial constituent and geological s
According to the fractal theory, the spatial fractal character of coastline is preliminarily dis-cussed on the basis of GIS in this paper.Two aspects are considered: one is the length demarcation ofcoastline with different scales, and the other is the confirmation of existence the fractal character on dif-ferent boundaries of tidal flats .Finally, some significant conclusions are: (1) The coastline ofJiangsu Province has the fractal character and its dimension is 1.0696. (2) It conforms to the exponentialcorrelation between different lengths (L ) of coastline and scales (k) .It conforms to the formula lgL (k) = - 1.029lgk + 2.9544 in the continental coastline of Jiangsu province. (3) Different boundaries of a tidal flathave fractal characters, and different fractal dimensions different different comparative intensities of ero-sion and deposition on the tidal flat. (4) The reciprocity between land and sea may affect the value offractal dimension of a coastline, just as the lithology, substantial constituents nt and geological s