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研究了武夷山自然保护区森林土壤生化特性．结果表明，不同生境土壤呼吸作用、纤维分解作用和硝化作用等３项生化强度有明显差异，先峰岭（常绿阔叶林）＞大竹岚（毛竹林）．同一生境中的不同小生境３项生化强度的差异也很显著，尤其是呼吸作用强度，落叶层＞腐殖层＞土壤层；纤维分解作用强度，腐殖层＞落叶层＞土壤层；硝化作用强度，土壤层＞落叶层＞腐殖层．无论那一种生境３项生化强度之间，呼吸作用强度与纤维分解作用强度有一定相关性，而硝化作用强度与前两项未显示相关．不同生境土壤蔗糖酶、纤维素酶和蛋白酶等活性显著不同，大竹岚＞先峰岭．同一生境中的不同小生境３种酶活性随土壤剖面深度而降低；蔗糖酶是各生境中活性最大酶类，变化较剧；纤维素酶和蛋白酶则活性较小，变化较缓和．
The biochemical characteristics of forest soil in Wuyishan Nature Reserve were studied. The results showed that there were significant differences in the three biochemical intensities of soil respiration, fiber decomposition and nitrification in different habitats. Xianfengling (evergreen broad-leaved forest)> Dazhu Lan (moso bamboo forest). There were also significant differences in the biochemical intensities among the three habitats in the same habitat, especially the intensity of respiration, litter layer> humus> soil layer, fiber decomposition strength, humus layer> deciduous layer> soil layer, and nitrification Strength, soil layer> deciduous layer> humus layer. No matter what kind of habitat between the three biochemical strength, respiration intensity and fiber decomposition strength has a certain correlation, and nitrification intensity and the first two did not show correlation. The activities of sucrase, cellulase and protease in different habitats were significantly different, Dazhu Lan> Xianfengling. The activities of three enzymes in different niches in the same habitat decreased with the depth of soil profile. Sucrase was the most active enzyme in all habitats, and the changes were more dramatic. The activity of cellulase and protease was less and the change was more moderate.