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[目的]了解不同土壤利用方式下的土壤退化程度。[方法]采用野外采样及室内分析的方法,选取人为干扰较小的旱冬瓜林作为对照,对不同利用方式下的土壤的养分状况、微生物状况及生化作用进行分析。[结果]土壤养分含量均随土层加深而减少。土壤有机质、氮素、速效钾均以旱冬瓜林最高。不同土地利用类型间各种土壤微生物类群的含量和数量具有很大的差异。旱冬瓜林的微生物数量是最丰富的。6种利用类型林地土壤生化作用存在明显差异。旱冬瓜林地土壤呼吸作用、氨化作用、硝化作用和纤维素分解作用均高于其他利用类型土壤。[结论]旱冬瓜林土壤性状较好,其他5种利用类型均存在不同程度的退化。
[Objective] The aim of the study was to understand the degree of soil degradation under different soil use patterns. [Method] With the methods of field sampling and indoor analysis, the soil nutrients, microbial status and biochemistry under different utilization ways were selected as the control. [Result] Soil nutrient content decreased with the deepening of soil layer. Soil organic matter, nitrogen, available potassium are the highest drought-melon forest. The contents and quantities of various soil microbial taxa in different types of land use vary greatly. Dry winter melon forest microbial number is the most abundant. There were significant differences in soil biochemical effects among the six types of forestland. Soil respiration, ammonification, nitrification and cellulose decomposition of A. gossypii forest were higher than those of other types of soil. [Conclusion] The soil properties of dry sweet melon forest were better, and the other five kinds of utilization types all had different degrees of degeneration.