Aspen (Populus tremuloides Michx.) and black spruce (Picea mariana Mill.) soil incubation decomposition data (mesocosm study)

To test the effect of biodiversity on decomposition and enzyme activities, quaking aspen (Populus tremuloides Michx.) and black spruce (Picea mariana Mill.) litter was inoculated with mixtures of one, two, four, or eight fungi from a pool of 16 fungi that had been isolated from a boreal forest in Alaska. Total CO2 release and the activities of b-glucosidase, which targets cellulose, and polyphenol oxidase, which targets lignin and other recalcitrant phenolic compounds, were observed across the range of species numbers in the mixtures.

为探究生物多样性对有机质分解过程及酶活性的影响，研究人员将颤杨（Populus tremuloides Michx.）与黑云杉（Picea mariana Mill.）的枯落物，接种以从阿拉斯加北方森林中分离得到的16种真菌菌群库中选取的1种、2种、4种或8种真菌的混合菌液。随后在不同真菌物种组合丰度梯度下，测定了体系总CO₂释放量，以及靶向纤维素的β-葡萄糖苷酶（b-glucosidase）和靶向木质素与其他难降解酚类化合物的多酚氧化酶（polyphenol oxidase）的活性。