Soil Quality Evaluation and Driving Factor Analysis of Hippophae rhamnoides Plantations in Coal Mine Reclamation Areas Based on Different Restoration Durations

The driving factors affecting soil quality were identified to evaluate the effect of vegetation on in coal mine reclamation areas with various restoration durations. This study used Hippophae rhamnoides subsp.sinensis Rousi different durations (3, 4, 5, 6, and 7 years) abandoned land area Juxinlong Ordos as research subject. Artificial grasslands selected study’s controls. A evaluation model was constructed assess area. structural equation thoroughly analyze findings show that: (1) Reclamation duration significantly affected physicochemical characteristics soil. As increased, nutrients such organic carbon accumulated while bulk density index (BD) decreased. (2) forest China highest after 6 years reclamation. lowest 4 differed from that (p < 0.05). (SQI) 6a (years) increased by 67.44% compared 4a. (3) By constructing a model, it found physical indicators (saturated water content silt) main drivers quality. SQI had strong interaction matter (OM) this will serve important guidelines for future quantitative following management during ecological process.