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林业资源管理 ›› 2010, Vol. 0 ›› Issue (4): 63-67.

• 科学技术 • 上一篇    下一篇

基于遥感技术的退耕还林监测研究——以甘肃省清水县为例

赵子忠, 芦维忠   

  1. 甘肃林业技术学院,甘肃 天水 741020
  • 收稿日期:2010-06-21 修回日期:2010-07-07 发布日期:2020-12-14
  • 作者简介:赵子忠(1963-),男,甘肃武威人,副教授,学士,主要从事森林培育、森林资源调查教学工作。Email:zzz8329@163.com
  • 基金资助:
    国家“十一五”科技支撑计划;森林资源综合监测技术体系研究项目;国家重点林业工程监测技术研究课题;退耕还林工程监测技术研究专题(2006BAD23B05)

Study on Monitoring the Project of Converting Farmland into Forest Based on Remote Sensing Technique——Taking Qingshui county of Gansu province as an example

ZHAO Zizhong, LU Weizhong   

  1. Gansu Technical College of Forestry, Tianshui 741020, Gansu, China
  • Received:2010-06-21 Revised:2010-07-07 Published:2020-12-14

摘要: 利用1∶5万地形图的DRG(数字栅格图),采用二次多项式法和双线性内插法;对TM图像进行几何校正处理。以TM432为最佳波段组合。在ERDAS 遥感数字图像处理系统支持下,对清水县1997年和2008年两期的归一化差异植被指数(NDVI)进行了统计计算,并获得了其植被指数分布图、植被指数差值图及统计表。结果表明:2008年的植被指数相对1979年有了很大程度的提高,植被指数大于0以上的面积增加了13.4%。全县60%土地的NDVI值都有不同程度的增加。

关键词: 退耕还林工程, TM图像, 归一化差异植被指数(NDVI)分布图, 差值图, 统计表

Abstract: Supported by digital grid of 1∶50000 topographic map,quadratic polynomial and bilinear interpolation,the geometric calibration processing of TM image was made.By taking TM432 as the optimum band combination and using ERDAS remote sensing digital image processing system,the normalized difference vegetation indexes (NDVI) for Qingshui county in 1997 and in 2008 were calculated.Meanwhile,the profile and the difference chart of the vegetation index,together with the statistics were achieved.It was showed that compared to the vegetation index in 1997,that in 2008 is greatly improved and that the improvement rate takes up 13.4% of the total area of Qingshui.NDVI values of the whole county's 60% land all have the increment of different degree.

Key words: project of converting farmland into forest, TM image, NDVI profile, difference chart, statistic chart

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