Nonlinear method for describing urban surface landscape structure

Abstract

The invention discloses a nonlinear method for describing an urban surface landscape structure. The method comprises the steps of 1, performing temperature retrieval: calculating a radiation energy value, a radiation brightness temperature and a ground temperature; 2, for a temperature difference of measure selection regions in thermal field pattern study, assuming that an image has MXN pixels, performing coverage ((M / epsilon)X(N / epsilon) square boxes are required) on a whole image region by using a group of square boxes of different dimensions epsilon, calculating a temperature difference delta T epsilon (delta T epsilon = (Tmax-Tmin) / epsilon) in each box, imagining delta T epsilon as the height of an image curve, then performing coverage by using (delta T epsilon + 1) boxes, and calculating regional measure by using a formula: mu (epsilon) = (delta T epsilon + 1) / sigma (delta T epsilon + 1); 3, enabling q to be greater than -10 and less than 10, calculating a partition function xq(epsilon), and calculating a quality index tau (q) in a double-logarithmic coordinate system; 4, calculating alpha (q) by using a formula: alpha (q) = (tau (q+1) - tau (q-1)) / 2; and 5, calculating f(alpha) by using a formula: f (alpha) = q alpha (q) - alpha (q).

Description

Technical field [0001] The invention relates to a method for modeling urban thermal environment field texture structure. Background technique [0002] The heat island is caused by the city itself. In addition to the influence of external weather conditions such as wind speed and air pressure, this "self" should refer to the urban surface structure, the spatial structure or arrangement of ground buildings, and human factors. In the process of urban development, changes in the surface structure inevitably change the distribution of solar radiation budgets, leading to differences in surface radiation and atmospheric temperature between cities and suburbs. The difference in temperature between cities and suburbs is commonly referred to as the urban heat island effect. Has always received people's attention. [0003] On the one hand, changes in the surface structure result in changes in land cover types, such as muddy soil turning into cement ground, vegetation reduction, etc. Existin...

AI Technical Summary

Problems solved by technology

Although both landscape ecology and fractal can describe the pattern of urban thermal field and reflect the scale characteristics of urban thermal field, landscape ecology lacks the consideration of self-similarity and singularity measurement of thermal field itself, while single fractal cannot Reflecting the multi-scale characteristics of the thermal field

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