Remote Sensing Monitoring of Paddy Water Stress

• Main Authors: Yuan-Feng Su, 蘇元風
• Other Authors: Wen-Cheng Huang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/54556465565365473955

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 92 === In this research, the experimental method of Crop Water Stress Index (CWSI) was first applied to paddy field. At first, the relationship between CWSI and paddy response must be confirmed and then satellite remote sensing data were applied to monitor large-scale paddy water condition. The Non-Water-Stressed Baseline of paddy was obtained from experiment and verified by outdoor paddy field data within the period from August 2003 to July 2004. The result of experiment showed the experimental method of CWSI could properly describe water condition of paddy in term of real number between 0 and 1. Furthermore, the vegetation index, Normalized Difference Vegetation Index (NDVI), derived from SPOT satellite and field measurement data were applied in order to show the relationship between SPOT image data and water stress of paddy. Preliminary result showed that when water stress becomes more serious (from 0.09 to 0.74) then NDVI value would slightly decrease from 0.33 to 0.27.