基于遥感和GIS的甘肃省森林生态面积调查与价值评估

The Research of Forest Ecosystem and their Valuation of Gansu Province Based on Remote Sensing and GIS

利用遥感(Remote Sensing)和地理信息系统(GIS)技术并结合森林的生态系统服务功能,以甘肃省的森林资源为研究对象,进行了地理信息系统空间分析和各类森林资源的生态价值评估。通过甘肃省归一化植被指数(NDVI)与甘肃省10个林区森林生态系统价值的比较分析,得出各林区单位面积生态价值中河西地区林区最低,陇南地区林区则较高。各林区的生态价值决定于林区地理位置,气候条件和人类影响程度等因素。

By using remote sensing and GIS technologies and forest ecosystem serverces function, this paper discusses the forest resources of Gansu province. Make some GIS spatial analysises and forestry capital val-uation ,then get the NDVKNormalized Difference Vegetation Index） of Gansu and the forest valuation of 10 forest areas. By comparing them, the results indicate that the lowest of valuation is in Hexi area,and Longnan area highest. The results also illuminate the ecology valuation is affected by geographic position, climate and human influence.