Talk:Tai'an
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Discussion
Why the area is on the map
- Clarke (1995): the fibre hemp of the Tai'an district is a landrace, "Lai Wu" or "Fei Cheng" hemp, grown from farm-saved seed on about 65,000 hectares a year in the 1970s and early 1980s and about 4,000 hectares in 1993; escaped and wild cannabis on Tai Shan.
- The Beijing News (23 November 2020): a germplasm collector of the Chinese Academy of Agricultural Sciences says that wild hemp still survives in the valleys of Tai Shan.
- The crop is a fibre landrace with no drug use. A landrace hemp makes a growing area whatever its use.
Growing status
The status is Active: wild hemp is reported surviving on Tai Shan in 2020. The landrace crop itself is last dated by Clarke, in 1993, when it was still grown on about 4,000 hectares; no source read says that growing it ended.
How the border is drawn
- The border follows Tai'an, a prefecture-level city of Shandong (Taishan and Daiyue districts, Xintai, Feicheng, Ningyang and Dongping; OpenStreetMap relation 3486494), with Laiwu and Gangcheng districts of Jinan (5676439, 5676438), which until 2019 formed Laiwu city, as mapped in OpenStreetMap (read 21 October 2026).
- Ground above 4,000 m and land that ESA WorldCover 2021 maps as bare or sparsely vegetated, as snow and ice, or as open water is left out of the border. This takes out about 110 km², almost all of it Dongping Lake.
- Check points inside the border: Tai'an, the summit of Mount Tai, Feicheng, Ningyang, Laiwu, the collecting point of Wang 413. Outside it: central Jinan, Qufu.
- Land cover: ESA WorldCover 2021 (version 200, 10 m), © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium, licensed CC BY 4.0.
The name
The page takes the name of the city and of the district Clarke studied. His "Tai'an District" was the prefecture of the time, which included Laiwu; Laiwu was later a city of its own and is now a district of Jinan, so it is drawn in here. Clarke's "Ning Yong" county is Ningyang.
Accessions inside the border
Wang 413 (1935), from Hwei-maling on Tai Shan, lies in the area but is not filed under it: the sheet is classed as of unknown status. Clarke's escaped and wild plants on Tai Shan were seen in the 1990s and do not settle what the 1935 plant was.
Sources
- Clarke (1995): read in full in the issue PDF of the Journal of the International Hemp Association.
- Beijing News (2020): read in full at the address cited.
Where the sources disagree
- Area in 1993. Local officials and the mill put it at about 5,300 hectares; Clarke's own estimate, from village leaders and agricultural advisers, is nearer 4,000. The article gives both.
Sources not used
- An undated agricultural-encyclopedia entry on hemp rotations names three rotation systems in the Tai'an district; it gives no date and is left out.
- An agricultural-encyclopedia entry naming Laiwu hemp among the Chinese hemps known for quality on the international market gives no date and is left out.