摘要
利用网袋埋藏法对红松原始林、红松人工林、红松皆伐迹地和红松火烧迹地4种林型中的凋落物进行埋藏分解试验,研究凋落物分解速率及其变化动态,同时利用分解模型模拟预测其凋落物的分解进展。结果表明,4个林型凋落物都表现出随时间进程失重率增大的现象,至试验结束时(396天),凋落物最终干物质剩余率从小到大依次为皆伐迹地、火烧迹地、原始林、人工林;阶段分解速率表现为以阔叶为主要建群种的次生林(红松皆伐迹地和红松火烧迹地)大于红松原始林和红松人工纯林;红松凋落物分解95%需要8.7年左右,而次生林分解95%需要4.3年左右,不同林型间的分解速率和分解时间差异明显。
Korean pine forest, Pinus koraiensis, Pinus koraiensis, Pinus koraiensis forest clear-cutting litter burned the four forest types were buried decomposition test by mesh bag buried method. The litter decomposition rate and change the dynamic was studied. At the same time, the progress of decomposition of litter decomposition model for simulating prediction. The results showed that four type of forest litter studies have shown temporal process of weight loss rate increased, to the end of the experiment （396d）, the final dry matter remaining rate of litter from small to large order was clear-cut, burned area, the original forest, artificial forest. Stage of decomposition rate performance of the broad-leaved secondary forest （Clear-cut and prescribed burning） as the main building species than the original Korean pine forest and artificial pure Korean pine forest. Decomposition of 95% need about 8.7 years of Pinus koraiensis litter. While the secondary forest decomposition 95% need about 4. 3 years. Different forest types in the decomposition velocity and time difference.
出处
《林业科技》
2013年第2期19-22,共4页
Forestry Science & Technology
基金
黑龙江省科技厅重大攻关项目<大兴安岭生态功能区构建关键技术研究与示范>中的子项目<退化森林生态系统的恢复技术研究与示范>(GA09B201-03)
关键词
阔叶红松林
林型
凋落物
分解速率
分解模型
Broad-leaved Korean pine forest
Forest type
Litter
Decomposition rate
Decomposition model
