期刊论文

Dai, L.-M.

中文

生态学杂志

1000-4890

2011

30

2

384-388

10.13292/j.1000-4890.2011.0060

国家自然科学基金项目（40873067和30800139） 国家林业公益性行业专项（201104070）资助

本校为其他机构

以原始阔叶红松林为研究对象,采用密度依赖矩阵模型,模拟了自然生长预案下林分径级结构的动态变化,分析了一种择伐预案对林分径级结构的影响,计算了7种不同择伐强度下森林的恢复期.结果表明:原始阔叶红松林比较稳定,但也有比较缓慢的自然生长,林分株数密度呈下降趋势,符合森林的自然稀疏规律,随着时间的推移,各径阶株数的变化速度逐渐减弱,趋于稳定,验证了演替顶极理论.以生长量、收获量、保留林分结构和采伐费用为森林经营效果的评价指标,则20%的采伐强度、35年采伐周期和25%的采伐强度、45年的采伐周期的2种方案较优.

Taking the original broad-leaved Korean pine forest in Changbai Mountain of Northeast China as test object, and by using density-dependent matrix model, this paper simulated the temporal dynamics of diameter distribution of the stand under natural growth scenario, analyzed the effects of a selection harvest scenario on the diameter distribution, and calculated the recover periods of seven harvest scenarios. The forest was relatively stable, but still had a slow natural growth. The stand density declined, which accorded with the self-thinning law of forest. The change rate of the tree number of...