- 软件名称:基于无人机影像的滩涂入侵种互花米草植被信息提取与覆盖度研究
- 软件大小: 0.00 B
- 软件评级: ★★★
- 开 发 商: 周在明,杨燕明,陈本清
- 软件来源: 《遥感技术与应用》
- 解压密码:www.gissky.net
资源简介
摘要: 以福建三沙湾为试验区,以地面光谱和低空无人机获取的可见光影像与ADC多光谱影像为数据源对入侵种互花米草植被信息和覆盖度进行研究。构建了基于可见光波段的改进型土壤调整植被指数V\|MSAVI用于可见光影像植被信息提取,以NDVI指数模型对ADC多光谱影像进行了植被覆盖度估算。结果表明,V\|MSAVI指数具有较好的适用性;在互花米草覆盖度方面以40%~60%和60%~80%中高等级分布为主。精度检验表明,基于V\|MSAVI植被指数提取得到的互花米草总体精度为89%,Kappa系数为0.77;植被覆盖度的估算值与真实值之间的均方根误差(RMSE)为0.06,决定系数R2为0.92。 关键词: 互花米草; 植被信息提取; 植被覆盖度; 无人机影像 Abstract: In this study,vegetation extraction and fractional vegetation cover of Spartina alterniflora (S.alterniflora )was studied in an experimental region of Sansha bay,a typical coastal wetland area in Fujian Province,China.A new vegetation index visible\|band modified soil adjusted vegetation index (V\|MSAVI)was constructed and the fractional vegetation cover was calculated subsequently based on the NDVI model.Results showed that,the S.alterniflora extraction results by V\|MSAVI had a satisfactory precision.Most of the fractional vegetation covers of S.alterniflora were in medium\|level coverage (40%~60%)and a high\|level coverage (60%~80%).An accuracy analysis based on the visual interpretation indicated the overall extraction results accuracy of 0.89,and a kappa coefficient of 0.77.Root mean square error (RMSE)of fractional vegetation cover between the estimation value and the true value was 0.06,and the determination coefficient R2 was 0.92.相关资源
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