Characteristics of Forest Soil Enzyme Activities, Nutrient Restriction, and Physicochemical Properties at Different Altitudes and Their Seasonal Dynamics

作者：Hao Tan, Yunfei Tuo, Xiaoli Chang, Junping Liang, Qi Yang, Xinhua He · 发表于：Eurasian Soil Science · 年份：2025 · DOI：10.1134/s1064229324602117 · 被引用次数：9 · 研究领域：Soil Carbon and Nitrogen Dynamics、Agriculture, Soil, Plant Science

Abstract Soil enzyme not only participates in soil nutrient cycling but affects soil structure. However, the response mechanism of soil enzyme to soil nutrient restriction and aeration at different altitudes is poorly understood. Therefore, In March, June, September, and December 2022, we determined and analyzed the forest soil at 1800, 2100, 2400, and 2700 m altitude in Liziping National Nature Reserve of Sichuan Province, China, and Mantel and Person correlation analyses were employed to analyze the relationship of soil physicochemical properties, CP : NCP and ecological stoichiometric ratios with soil enzyme activities on a seasonal scale. The data showed that the vertical distribution characteristic among soil enzyme activities along the soil layer at different altitudes was similar in each season, and the altitude, season, and their interaction had important effects on forest soil enzyme activities at different altitudes. With the altitude increasing, soil urease, sucrose, acid phosphatase, and catalase showed different variation trends in each season, season, and their interaction caused obvious differences in soil stoichiometric ratios. soil CP : NCP ratio varied with altitude was 1800 > 2100 > 2400 > 2700 m. In addition, the average values of soil C : N, C : P, and N : P ratio in a year were 29.26, 109.29, and 4.52, respectively. The soil CP : NCP ratio was the dominant factor of soil acid phosphatase in March and December (P < 0.01), soil CP : NCP ratio was the domin...