基于二维Kalman滤波的森林资源结构预测的理论与方法

The Theory and Method on Dynamic Prediction for Forest Resources Structure based on Two Dimensional

摘要: 介绍了二维Kalman滤波的原理,并以浙江省丽水市森林资源连续清查样地的地理坐标建立二维坐标系,以样地森林面积和森林蓄积为状态向量,应用二维Kalman滤波研究森林资源结构动态.结果表明,对森林蓄积动态及样地个数较多、面积较大的用材林和防护林的面积动态预测效果良好,而对于样地个数较少、变异系数较大的样地如特用林和未成林造林地的面积动态预测误差较大,如要准确预测则需要加大这些样地的抽样个数.

Abstract: The principle and method of two-dimensional Kalman filtering were introduced.The two-dimensional coordinates were set up based on the geographic coordinates of continuous sample plots of forest resources in Lishui,Zhejiang province.The dynamic structure of forest resources was studied by two-dimensional Kalman filtering by using the forest area and forest resources as state vectors.The results indicated that the dynamic forecasting for forest resources and forest area of timber and protective forest area ha...