Determination of paddy field in the world using TERRA/ASTER data

Using ASTER data, we determined the each specificity of paddy field in the world. Shonai Plain is typical paddy field area in Japan, and has well-developed irrigation and drainage systems. Yangtze River Delta in Middle-East China is the famous paddy fields area in the world, and fishponds are increased recently. Northeast Thai Plain in Thailand and Mekong Delta in Vietnam are famous to produce exporting rice. At the areas, temperature is enough for rice growth, and limitation is water supply. Northeast Thai Plain has severe dry season, and at the season, rice cannot grow. Mekong Delta area is attached South China Sea and the mouth of the Mekong River. At this area, rice grows not only in rainy season but also dry season. Bhutan is small and mountainous country. There are very small size paddy fields in Thimphu area in Bhutan. Sacrament Valley in USA is also very famous commercial rice producing area and the field size is large. At New South Wales in Australia, upland farming fields and paddy fields are mixed, and field size is also large. At east Africa, the consumption of rice is increase, and rice producing is important issue at these countries. The Foot of Mt. Kenya area in Kenya, there is large paddy field area, and well-developed irrigation system like Japan.