基于决策树的泉州湾沿海防护林动态变化研究

通过对福建泉州湾沿海防护林信息提取及变化检测,分析了泉州湾沿海防护林近20 a来的变化情况,为泉州地区防护林建设和保护提供科学的决策依据。利用遥感对地观测技术,采用决策树分类法对泉州湾沿海防护林进行分类及变化检测。结果表明:1987~2008年的21 a间,泉州湾沿海防护林面积净增537.23 hm²,增加了20.5%；防护林以阔叶林为主,占了70%~80%。总的看来,阔叶林、针叶林的面积在不断增加,红树林面积经历了先减后增的过程；但局部地区出现了防护林减少的情况,如泉州的丰泽区和石狮沿海,因城市扩展导致的土地成片开发占用了大片防护林。虽然泉州湾沿海防护林面积有所增长,但其空间分布不尽合理,并不能有效地保护泉州沿海经济发达地区。因此,下一步工作考虑如何根据检测结果作出调整,充分发挥泉州湾沿海防护林的作用。

Study on Dynamics of Coastal Protecting Forest in Quanzhou Bay based on Decision Tree Classification

The coastal protective forest in Quanzhou bay was extracted and the change detection technique was employed to reveal the change of coastal protective forest in Quanzhou bay from 1987 to 2008,and the scientific decision making was provided for forest construction and protection.This paper employs the decision tree classification of remote sensing technology to extract the coastal protective forest.The results shows that a total of 537.23 hm2 coastal protective forests have been increased from 1987 to 2008,t...