红松人工林矿质营养元素含量与贮量的研究

以黑龙江省东北林业大学老山人工林实验站26林班白浆土栽培的红松人工林为试验地，林龄20年，公顷株数为3240株，研究结果表明，矿质元素贮量为502.37 kg·h^-1·m^-2，平均每年为25.12 kg·h^-1·m^-2。其中乔木层占总量的81.46%，灌木层占11.17%，草本层占2.56%，凋落层占4.81%。为增加矿质元素含量与贮量，应调整林分结构，促进生长，提高林地生产力。

Contents and Storages of Mineral Nutritive Elements in Plantations of Pinus koraiensis

The plantations of Pinus koraiensis at the compartment 26 of Laoshan experimental station of Northeast Forestry University were studied. The plantations are 20 years old, and there are 3 240 individual plant per hectare. The results indicate the total storage of nutritive elements is 502.37kg·h^-1·m^-2. The mean storage is 25.12 kg·h^-1·m^-2 per annum. The storage of arbor is 81.46%, followed by shrub 11.17%, herb 2.56% and litter 4.81%, respectively. To improve the content and storage of nutritive elements and production, the management of plantations is needed.