Shunma Kuzuya
Grasp of £ņice planting history for each paddy field in mountainous areas
using satellite observation data
Atsushi Rikimaru Kazuyoshi Takahashi Kenata Sakata
In recent years, the decline and abandonment of cultivation due to the aging of farmers is progressing, and the abandonment of cultivation in intermediate and mountainous areas has become a particular problem.The local government records the planting situation every year in cooperation with farm co-ops, but it is the present conditions that the confirmation confirms some in planted farms.Against it man-made satellite is periodical and can grasp a farm spatially.This crop growth information over a wide area of farmland each section is information dominant in agriculture.
In this study, the number of partitions from the NDVI of overgrowth the period and determined by the reflectance of the near-infrared band states that irrigate of time planting rice in terms of reflectance data partition farmland to observation data of Landsat7ETM + and RapidEye conduct the determination of the rice planting, rice planting was verified by the data.We also created a history from the result of the determination of rice planted from 2010 to 2012, examined whether can be grasped of the situation and restoration of abandoned agricultural field that was damaged by the recent disaster.
In the result of the determination, the determination in Tokamachi misclassification was also under the same conditions as agricultural field there is a agricultural field in which there is no planting pattern without planting a variety of rice has been planting.In addition, differences in satellite imagery, RapidEye satellite determination was good. However, Landsat7ETM + has resulted in higher misclassification because the resolution is low.Also, I can not determine the rice fields that do not draw water in the period of satellite observations to draw water. However, by using the RE and NIR to determine the delay of the growth of the rice fields during the ripening period, that we can we can be improved the discrimination precision suggested.Therefore, you can determine the status of the rice fields in the post-2010 disaster, disaster recovery situation that occurred prior to 2010, it is difficult to determination. It is the future, and makes it easier to determination the situation by planting determination from satellite data accumulated in the past.
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