The glomalin-related soil protein content in 0～50 cm soil layers of secondary forest, paddy field and rubber forest was determined to study the effect of different land use pattern on soil glomalin for rationally utilizing tropical soil resources in Hannan province. The results showed that the glomalin-related soil protein content in secondary forest, paddy field and rubber forest was relatively low, the glomalinrelated soil protein content in soil layers with 0～10 cm depth and 20～50 cm depth was 3.43～4.78 mg/g (the highest) and 1. 5～2.36 mg/g (the lowest), the glomalin-related soil protein content in the layer with 0～20 cm depth was significantly higher than that in the layer with 20～50 cm depth under the same land use pattern. The land use pattern change from secondary forest to paddy or rubber forest had no the effect on the glomalin-related soil protein content in the layer with 0～20 cm depth, which significantly reduces the glomalin-related soil protein content in the layer with 20～50 cm depth.%为海南热带土壤资源的合理利用提供依据,采用20 mmol/L的热柠檬酸钠(121℃)提取海南白沙次生林、水田以及橡胶林剖面(0～50 cm)土壤中球囊霉素相关土壤蛋白质含量,用Bradford染色法进行测定,研究了土地利用变化对海南热带土壤球囊霉素的影响.结果表明:海南次生林、水田以及橡胶林土壤中球囊霉素相关土壤蛋白质含量相对较低,0～10 cm土层中球囊霉素相关土壤蛋白质含量最高,为3.43～4.78 mg/g;20～50 cm土层中球囊霉素相关土壤蛋白质含量最低,为1.5～2.36 mg/g.海南次生林、水田和橡胶林0～20 cm土壤中球囊霉素相关土壤蛋白质含量分别显著高于相同利用方式20～50 cm土壤层次中球囊霉素相关土壤蛋白质含量.土地利用方式由次生林转变为水田和橡胶林对0～20 cm土壤层中球囊霉素相关土壤蛋白质含量没有影响,使得20～50 cm土壤中球囊霉素相关土壤蛋白质含量显著降低.
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