基于MODIS遥感数据提取海南橡胶信息初步研究

通过计算海南省MODIS-INDVI值,结合GPS选定橡胶种植样本训练区的多时相INDVI值变化曲线,以及橡胶树冬季集中落叶特性和蓬叶生长等的周年生长变化规律,采用监督分类方法提取非样本训练区橡胶种植信息,最终实现海南橡胶种植空间分布遥感信息的提取。通过对连片区域和零散点橡胶种植区野外验证,结果表明海南橡胶种植信息遥感监测与实况相符,估算面积误差初步统计在5%以内。

A Primary Study on Rubber Acreage Estimation From MODIS-Based Information in Hainan

Using the annual variation patterns of MODIS-INDVI(Moderate Resolution Imaging Spectroradiometer-Normalized Difference Vegetation Index), according to the spectral growth of rubber tree in training samples, the authors of the present paper adopted the method of supervised classification to extract the rubber planting acreage in Hainan Province. The samples of training plantations were selected by GPS and the multi-temporal INDVI curve was worked out. Filed investigation of regions and scattered points showed that the above mentioned remote monitoring information recognition was accurate , with error less than 5%. The result of rubber planting acreage given out using MODIS data is basically consistent with actual distribution.