DOI: https://doi.org/10.36347/sjet.2024.v12i12.002

Pages: 349-354

The distribution of soil nutrients in cultivated land was clarified and the soil fertility was systematically evaluated and analyzed. First, five important indicators that have a greater impact on soil comprehensive fertility were selected, and the index data were standardized. According to the different impacts of each indicator on soil fertility, the average value of partial correlation coefficient between each indicator and other indicators was calculated, and a certain weight was given to each indicator. The inverse absolute value method was used to construct a fuzzy similarity matrix, and the fuzzy similarity matrix was transformed into a fuzzy equivalent matrix to obtain dynamic clustering results. Finally, statistics were used to determine the optimal threshold value as 0.993 and the relative optimal soil classification number as 7 categories. The experimental results are in agreement with the actual situation, which proves the effectiveness of the fuzzy dynamic clustering algorithm.