关键词: 荔枝树, 荔枝树, 冻害等级, 最低气温, 相关分析, 冻害指标

Abstract: The shrub is adapted to the Loess Plateau conditions with frequent and poor soils. The distribution of shrub in Loess Plateau has obvious characteristics, and studying the shrub characteristics is important for scientific prevention of vegetation. By using Geographical information system combining the Shape Indices and Scale fractal of landscape, this paper studies the patch shape and their spatial distribution of shrub landscape. The results show that The values of shape indices of shrub landscape are comparatively great, which illustrates that the shapes of shrub patches are obviously deviated from circle and squire, and perform as irregular shapes with great length of patch boundary. The fractal dimensions of different shrub patches are varied greatly, the fractal dimensions of Form. Rhodedendron capitatum, R.thymifolium is maximum, the fractal dimensions of Form. Prunus mongolica is minimum, which further indicate that the heterogeneity of shrub landscape in Loess Plateau is great.