Around Na Hang, near Ba Be lake, rice fields : 無料・フリー素材/写真
Around Na Hang, near Ba Be lake, rice fields / Arian Zwegers
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Around Na Hang, near Ba Be lakeA paddy field is a flooded parcel of arable land used for growing semiaquatic rice. Paddy cultivation should not be confused with cultivation of deepwater rice, which is grown in flooded conditions with water more than 50 cm deep for at least a month. Paddy fields are the typical feature of rice farming in east, south and southeast Asia. Fields can be built into steep hillsides as terraces and adjacent to depressed or steeply sloped features such as rivers or marshes. They can require a great deal of labor and materials to create, and need large quantities of water for irrigation. Oxen and water buffalo, adapted for life in wetlands, are important working animals used extensively in paddy field farming.During the 20th century, paddy-field farming became the dominant form of growing rice. Hill tribes of Thailand still cultivate dry-soil varieties called upland rice. Paddy field farming is practiced in Asia, namely in Cambodia, Bangladesh, China, Taiwan, India, Indonesia, Iran, Japan, North Korea, South Korea, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Sri Lanka, Thailand, Vietnam, and Laos, and in Europe, Northern Italy, the Camargue in France, and in Spain, particularly in the Albufera de València wetlands in the Valencian Community, the Ebro Delta in Catalonia and the Guadalquivir wetlands in Andalusia, as well as along the eastern coast of Brazil, the Artibonite Valley in Haiti, and Sacramento Valley in California, among other places. Genetic evidence shows that all forms of paddy rice, both indica and japonica, spring from a domestication of the wild rice Oryza rufipogon that first occurred 8,200–13,500 years ago south of the Yangtze River in present-day China. However, the domesticated indica subspecies currently appears to be a product of the introgression of favorable alleles from japonica at a later date, so that there are possibly several events of cultivation and domestication.(source: en.wikipedia.org/wiki/Paddy_field) |
| 撮影日 | 2007-12-11 13:33:10 |
| 撮影者 | Arian Zwegers , Brussels, Belgium |
| タグ | |
| 撮影地 | Bac Kan, Vietnam 地図 |
| カメラ | Canon DIGITAL IXUS 60 , Canon |
| 露出 | 0.001 sec (1/1500) |
| 開放F値 | f/2.8 |
| 焦点距離 | 12515.55556 dpi |