【摘要】 利用环境小卫星遥感数据,可以计算特定区域的归一化植被指数,进而定量分析其植被覆盖情况。以"四川攀枝花苏铁国家级自然保护区"为研究对象,选取下载了相应区域2009年和2015年的环境小卫星遥感数据,经过辐射定标、图像校准等预处理后,计算得到归一化植被指数和植被覆盖度,通过对植被覆盖度数据进行统计和分析比较,结果表明该自然保护区及周边区域2015年植被覆盖度比2009年有明显增加。更多还原

【Abstract】 The NDVI can be calculated by remote sensing data of HJ- 1A / B,and then the vegetation coverage can be analyzed quantitatively. In this paper,the NDVI of Cycas protection zone of Panzhihua city in 2009 and 2015 were calculated after data pretreatment like radiometric calibration and image calibration,the calculation results of vegetation coverage were compared and analyzed. The results showed that the nature reserve and the surrounding area had more vegetation in 2015 than in2009 significantly.更多还原