Robust Soil Quality Index for Tropical Soils Influenced by Agricultural Activities

• 作者: Abraham Efraim Rodríguez-Mata Edith Padilla-Gasca Jaime Rochín Medina Jesus Gabriel Rangel-Peraza Leonel Ernesto Amabilis-Sosa Rosalía López-Corrales Tomás Osuna-Enciso Yaneth Bustos-Terrones
• 来源期刊: 农业化学和环境(英文)
• 学科: 医学
• 关键词: Principal Components ANALYSIS SOIL QUALITY Index Pearson CORRELATION SOIL QUALITY INDICATORS Sensitivity ANALYSIS
• 年，卷（期）: 2017,（4）
• 页码范围: 199-221
• 页数: 23页
• 分类号: R73

摘要

The knowledge of the soil quality plays a vital role in the agricultural sector. Despite its importance, there is scarce scientific information concerning this regard. The objective of this research is to develop a methodology to identify and select the most appropriate indicators of Soil Quality Index (SQI) in a region with high agricultural activity. For its conformation, a descriptive statistical analysis and a Pearson correlation matrix were performed and the indicators that showed greater variation were identified using a Principal Components Analysis (PCA). A sensitivity analysis was carried out and the most sensible soil indicators of?SQI?were identified. This statistical procedure was also used to specify the weights of the indicators in?SQI. The variables resulting from the multiparametric statistical analysis were pH, organic matter, sodium, calcium, iron, zinc, cation exchange capacity and electrical conductivity. The robustness of the?SQI?obtained in this study was demonstrated through simulations carried out by the numerical optimization through simplex method. The Soil Quality Index range obtained (0.54 - 0.75) locates Culiacan Valley soils as moderate/high quality.