摘要
根据西丰县2005年森林资源二类调查和(2006-2010年)森林资源年度变更统计数据,采用灰色GM(1.1)预测方法,对有林地面积、活立木蓄积和森林覆盖率建立预测模型。经精度分析,该模型拟合度较高。通过该模型预测了2020年和2025年有林地面积、活立木蓄积和森林覆盖率,为未来林业政策的制定提供数据支持。
According to statistics of the forest resources survey in2005and statistical data of annual changes for forest resources from2006to2010,by grey forecasting method--GM(1.1),the forecast model of forestland area,living wood growing stock&forest coverage rate were set up.The model could be applied for this precision fitting degree is higher.The three forest resources data(forestland area,living wood growing stock&forest coverage rate)in2020and2025were predicted through the model,which could provide data support for the forestry policy for the future.
作者
吴军
Wu Jun(Liaoning Forestry Investigation and Planning Institute, Shenyang 110122, China)
出处
《防护林科技》
2018年第3期23-25,共3页
Protection Forest Science and Technology
关键词
有林地面积
活立木蓄积
森林覆盖率
灰色预测法
精度
forest land area
living wood growing stock
forest coverage rate
grey forecasting method
precision
