Based on fractal theory

field sampling and laboratory analysis

the fractal dimension of soil waste-grassland after renovation was studied in Hanzhong

correlation of fractal dimension with soil textural

grain diameters and nutrient content were also discussed

and the prediction model of soil fractal dimension after waste-grassland renovation was built. The results showed that as follow: (1) The fractal dimension of plough soil particles was between 2.55～2.95

the mean value and standard deviation was respectively 2.77 and 0.134.The relationship of fractal dimension of soil particles was significant with soil texture (R2=0.978 0)

characterized by the fine soil texture was

the bigger the fractal dimension was. (2) The fractal dimension of soil particles was mainly decided by the clay content

the between has significant positive correlation; the forecast model built using the fractal dimension and soil clay (≤0.002 mm) was high precision (R2=0.982 7)

it can better predict fractal dimension of soil particles. (3) The positive correlation relationship existed between soil fractal dimension and total nitrogen

effective phosphorus and available potassium (correlation coefficients: 0.914

0.580 and 0.513 respectively) respectively. Fractal dimension of soil particles can be used as the effective indicators of soil fertility conditions. Studies concluding that soil fractal dimension can be a good characterization of soil texture

particle size composition and nutrient status

it will provide certain reference for the determination of nutrient content and sustainable use of land resources after land renovation.