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目的:以三七为研究对象,以遥感技术为基础,探索栽培类药用植物资源调查的方法。方法:通过卫星遥感影像及实地勘测对选定的研究区域进行调查,确定最佳调查技术方案。结果:确定了研究区三七遥感调查的大致思路,包括遥感信息源的选择、图像的处理、解译、野外验证等。结论:对研究区域的三七进行了量测,计算出三七分布的面积、蕴藏量和产量。对于马关县,采用SPOT5(5 m)影像,相对判对率,与统计数据比较的相对面积、相对产量精度可分别达到92.7%,94.4%,78.2%,采用TM5(30 m),相对判对率和相对面积精度只能达到71.4%,58.8%;而在丘北县,用TM5(30 m),相对面积精度却可达到74.7%,表明针对不同的区域选择合适的信息源以及相应的处理方法,将基于遥感技术的资源调查方法应用于三七的资源调查是可行的。
OBJECTIVE: To study the method of investigating the resources of cultivated medicinal plants based on remote sensing technology, taking the notoginseng as the research object. Methods: The selected research area was surveyed by satellite remote sensing images and field surveys to determine the best technical scheme for investigation. Results: The general idea of Sanchi remote sensing survey in the study area was confirmed, including the selection of remote sensing information sources, image processing, interpretation and field verification. Conclusion: The notoginseng in the study area was measured to calculate the area, reserve and yield of Panax notoginseng. The relative area and relative yield accuracy of SPOT5 (5 m) images and relative verdict rates in comparison with statistical data can reach 92.7%, 94.4% and 78.2%, respectively, using TM5 (30 m) and relative verdict The accuracy and relative area accuracy can reach only 71.4% and 58.8% respectively; while in QiuBei County, the relative area accuracy can reach 74.7% with TM5 (30 m), indicating that the suitable information sources for different regions and the corresponding It is feasible to apply the resource survey method based on remote sensing technology to the resource survey of Panax notoginseng.