Distribution Characteristics and Influence Factors of Rhizosphere Glomalin-Related Soil Protein in Three Vegetation Types of Helan Mountain, China

To reveal distribution characteristics of glomalin-related soil protein (GRSP) and it’s influencing factors under different vegetation types in the drought-tolerant shrubland Helan Mountain, we chose three as study subjects: Stipa breviflora (Grassland, G), Amygdalus mongolica (Shrub, S), breviflora-Amygdalus (Grassland-Shrub, G×S) bare was used control (CK). The contents easily extractable (EE-GRSP) total (T-GRSP), physicochemical properties, colonization rate, spore density, species abundance rhizosphere were determined. results indicated that EE-GRSP T-GRSP showed significant difference (p < 0.05) among types, with GRSP content highest G×S (5.68 6.27 mg·g−1, respectively) lowest CK (3.84 4.48 respectively). EE-GRSP/soil organic carbon (SOC) T-GRSP/SOC no > 0.05). trends same significantly from those 0.05), maximum values 75.6%, 20.7 × 10 g−1, 29.7, minimum 55.6%, 13.0 12.7, respectively. Pearson correlation analysis positively correlated SOC, phosphorus, available rate it an extremely positive potassium, 0.01). phosphorus well carbon, redundancy (RDA) similar results. Therefore, its low elevation area Mountain influenced by properties soil, arbuscular mycorrhizal fungi (AMF) colonization, thus providing a scientific basis for quality improvement restoration.