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Laminaria was harvested for food and 1949 yielded 40.3 metric tons of dry weight. [9] Laminaria need cold water to survive and can only live above 36° N latitude. [citation needed] In 1949, the Chinese started to commercially grow laminaria as a crop. This increased the production of dry weight to 6,200 metric tons.
The Historical Atlas of China (traditional Chinese: 中國歷史地圖集; simplified Chinese: 中国历史地图集; pinyin: Zhōngguó lìshǐ dìtú jí) is an 8-volume work published in Beijing between 1982 and 1988, edited by Tan Qixiang. It contains 304 maps and 70,000 placenames in total.
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Maps are also available as part of the Wikimedia Atlas of the World project in the Atlas of China. Pages in category "Maps of China" The following 7 pages are in this category, out of 7 total.
Laminaria hyperborea is a species of large brown alga, a kelp in the family Laminariaceae, also known by the common names of tangle and cuvie. It is found in the sublittoral zone of the northern Atlantic Ocean. A variety, Laminaria hyperborea f. cucullata (P.Svensden & J.M.Kain, 1971) is known from more wave sheltered areas in Scandinavia. [2]
Saccharina is a genus of 24 species of Phaeophyceae (brown algae). It is found in the north Atlantic Ocean and the northern Pacific Ocean at depths from 8 m to 30 m (exceptionally to 120 m in the warmer waters of the Mediterranean Sea and off Brazil).
The Yu Ji Tu, or Map of the Tracks of Yu Gong, carved into stone in 1137, [1] located in the Stele Forest of Xi'an, Shaanxi, China. This 3 ft (0.91 m) squared map features a graduated scale of 100 li for each rectangular grid. China's coastline and river systems are clearly defined and precisely pinpointed on the map.
Laminaria digitata. Laminaria digitata is a tough, leathery, dark brown seaweed that grows to 2 or 3 metres (6 + 1 ⁄ 2 or 10 ft) long. The holdfast which anchors it to the rock is conical and has a number of spreading root-like protrusions called rhizoids.