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在长白山针阔叶混交林下,红松、蒙古栎、春榆、白桦、山杨、色木及紫椴叶分解至300天时,其重量损失百分数分别为24.2,37.6,30.8,44,47,50.6及55.6。在分解过程中,每种叶子的重量损失同该叶子的木质素、水溶性物质、全碳及全氨的变化成线性相关(R=0.99)。在叶子分解前期,木质素、N素的绝对量有所增加。而水溶性物质则急剧减少。除紫椴叶外,其它几种叶子在分解过程中氮的含量有一定增加。但是,当红松、蒙古栎、春榆、白桦、山杨及色木叶中N素浓度分别为0.96%,1.41%,2.38%,1.67%,1.32%及1.32%时,则开始了N素的矿化释放。
Under the coniferous-broad-leaved mixed forest in Changbai Mountain, the weight loss percentage of Korean pine, Mongolian oak, spring elm, birch, aspen, color wood and Tilia amurense to 300 days were 24.2, 37.6, 30.8, 44.47, 50.6 and 55.6. During decomposition, the weight loss of each leaf was linearly related to the change of lignin, water-soluble material, total carbon and total ammonia in the leaf (R = 0.99). In the early decomposition of the leaves, lignin, N absolute increase has increased. The water-soluble substances are drastically reduced. In addition to the leaves of Tilia amurense, the nitrogen content of several other leaves in the decomposition process increased to a certain extent. However, when the concentrations of N in Korean pine, Mongolia oak, Ulmus pumila, Betula platyphylla, Populus davidiana and Sequoia leaves were 0.96%, 1.41%, 2.38%, 1.67%, 1.32% and 1.32% Mineralized release.