摘要
对大兴安岭蒙古栎低质林进行不同面积的带状和块状皆伐后,种植樟子松、西伯利亚红松、落叶松进行诱导改造,采用灰色关联分析法对各诱导改造样地和对照样地的土壤养分建立综合评价模型。结果显示:和对照样地相比,诱导改造后各样地的土壤养分在总体上均有所上升;块状改造比带状改造更能有效提高林地土壤养分,其中20 m×20 m林窗改造方式最有利于土壤养分的积累,最适宜大兴安岭蒙古栎低质林的改造;采用灰色关联分析法对土壤养分建立评价模型,不但简单可靠,而且模型具有通用性,稍加修改便可对其他区域的土壤养分进行比较评价。
An evaluation was conducted to do the clear-cutting in Quercus mongolica low-quality forest of Daxing＇an Mountains with different area of the strip and block and perform the induced transformation by planting Mongolica Litv,Pinus koraiensis and Larix gmelinii.The soil nutrient evaluation model in the induced transformation zone and the check zoon were established by using the grey correlation analysis.Compared with the check zoon,the soil nutrient in the induced transformation zone can rise in general.The block transformation can improve the land soil nutrient of low-quality forest effectively rather than the strip transformation and the 20 m×20 m forest gap is the best way to accumulate soil nutrient.Therefore,the block transformation is the most suitable way to transform the Quercus mongolica low-quality forest in Daxing＇an Mountains.It is simple and reliable to establish the soil nutrient evaluation model by using grey correlation analysis.The model can compare and evaluate soil nutrients of other areas with minimal modifications.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2013年第7期48-52,共5页
Journal of Northeast Forestry University
基金
"十二五"农村领域国家科技计划课题(2012BAD22B0202-3)
林业公益性行业科研专项(201004043)
关键词
蒙古栎低质林
诱导改造
土壤养分
灰色关联分析法
Quercus mongolica low-quality forest
Induced transformation
Soil nutrient
Grey correlation analysis method
