Physicochemical Properties of Soil and Enzyme Activity Characteristics in Various Grassland Types of the Qilian Mountains
Soil enzyme activity,a fundamental soil component catalyzing various biochemical processes,can be u-tilized to assess soil quality and health.To comprehend the physicochemical properties of soil and the characteris-tics of enzyme activity in diverse grassland types within the Qilian Mountains,a study was conducted on five soil enzyme activities and physicochemical properties in four types of grasslands in the Qilian Mountains.The results indicate that both soil enzyme activity and physicochemical properties exhibit significant differences among dif-ferent grassland types.High-altitude grasslands,high-altitude meadows,and high-altitude marsh meadows show notable distinctions compared to high-altitude deserts,while soil pH,total phosphorus,urease activity,and hydro-gen peroxide enzyme activity in the alpine grassland,alpine meadow,and alpine swamp meadow were lower.Meanwhile,soil moisture content,organic carbon,total nitrogen,alkaline phosphatase activity,amylase activity,and cellulase activity were higher.Additionally,the alpine wet meadow and alpine desert exhibited notable dis-tinctions in both soil physicochemical properties and enzyme activity characteristics.Soil enzyme activities(hy-drogen peroxide enzyme,urease,amylase,cellulase enzyme,and alkaline phosphatase)showed a highly significant correlation with soil physicochemical properties(pH,electrical conductivity,moisture content,organic carbon,to-tal nitrogen,and total phosphorus levels),suggesting a strong correlation between soil enzyme activity and physi-cochemical properties.Overall,soils under poor vegetation cover have lower soil carbon,nitrogen,and phosphor-us,higher soil pH and electrical conductivity,leading to lower soil enzyme activities.
万方数据
维普
