Application of wavelet analysis to the multi-temporal modis data for detecting the rice phenology

Toshihiro Sakamoto*, Akihiko Kotera, Naoki Ishitsuka, Hiroyuki Ohno, Nhan Van Nguyen, Masayuki Yokozawa

*この研究の対応する著者

研究成果: Conference contribution

抄録

We examined the spatial pattern of rice phenology in the Red River Delta (RRD) by using time-series MODIS data in 2003. We applied the Wavelet based Filter for determining Crop Phenology (WFCP) to assess the seasonal change of EVI data reflecting from the crop status. Time courses of smoothed EVI derived by WFCP showed two peaks on April-March and August-September, indicating that double rice cropping is mainly being performed in RRD. It was also shown that there are winter-spring rice cropping areas in eastern RRD (Hai Duong province, Hai Phong province and Thai Binh province) where cultivation period is about two weeks earlier than the other provinces. Furthermore, spatially heterogeneous distribution of heading dates for rainy season rice was detected by the spatio-temporal EVI. MODIS EVI with WFCP enable us to grasp the geographical characteristics of agricultural activity in RRD i.e. spatial pattern of rice cropping system, phenology and its recent changing trend with high accuracy.

本文言語English
ホスト出版物のタイトルAsian Association on Remote Sensing - 26th Asian Conference on Remote Sensing and 2nd Asian Space Conference, ACRS 2005
ページ209-212
ページ数4
出版ステータスPublished - 2005 12 1
外部発表はい
イベント26th Asian Conference on Remote Sensing, ACRS 2005 and 2nd Asian Space Conference, ASC - Ha Noi, Viet Nam
継続期間: 2005 11 72005 11 11

出版物シリーズ

名前Asian Association on Remote Sensing - 26th Asian Conference on Remote Sensing and 2nd Asian Space Conference, ACRS 2005
1

Other

Other26th Asian Conference on Remote Sensing, ACRS 2005 and 2nd Asian Space Conference, ASC
国/地域Viet Nam
CityHa Noi
Period05/11/705/11/11

ASJC Scopus subject areas

  • 航空宇宙工学

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