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应用改进的投影寻踪技术建立森林景观资源评价模型,可把各森林景观资源多维分类指标综合成一维投影值。投影值越大,表示该森林景观资源景观价值越大,因此,可以根据投影值的大小,对森林景观资源样本集进行合理区划。改进的投影寻踪技术用于景观资源分级与区划,其优化时间短、投影函数能达到最优,投影寻踪效果理想,简单可行,可操作性强。通过由样本数据驱动的改进的投影寻踪技术,建立福建省阔叶林森林景观资源评价模型,并结合聚类分析进行等级划分,福建省阔叶林景观资源等级划分为三级较为适宜。
Applying the improved projection pursuit technology to establish the evaluation model of forest landscape resources, the multi-dimensional classification indexes of forest landscape resources can be integrated into one-dimensional projection values. The larger the projection value is, the greater the landscape value of the forest landscape resources is. Therefore, the sample of forest landscape resources can be properly zoned according to the projection values. The improved projection pursuit technology is applied to landscape resource classification and zoning. Its optimization time is short, projection function can be optimized, projection pursuit effect is ideal, simple and feasible, and operability is strong. Through the improved projection pursuit technology driven by the sample data, the evaluation model of the forest landscape resources of the broadleaf forest in Fujian Province was established and classified by the cluster analysis. It was appropriate to classify the landscape resources of the broadleaved forest in Fujian Province into three levels.