Talk:Changzhi
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Why the area is on the map
- Li and colleagues (2026), Table S1: four of their twenty hemp landraces, collected in 2020, come from Qinyuan, Lucheng, Pingshun and Xiangyuan.
- The Yongzheng gazetteer of Shanxi (preface dated 1734): hemp (大麻, 火麻) abounds in Liao and Qin, and all three counties of Liaozhou grow it for oil and rope.
- An agricultural encyclopedia: the "Lu hemp district" of south-eastern Shanxi and its rotation; Changzhi's Lu hemp among the Chinese hemps known for quality on the international market and among the noted local varieties.
Growing status
The status is Active: the landrace seed was collected in 2020. The gazetteer dates from 1734, and the encyclopedia entries carry no date.
How the border is drawn
- The border follows Changzhi, a prefecture-level city of Shanxi, China (relation 2963917), with Yushe (3441295) and Zuoquan (3075780) counties of Jinzhong, as mapped in OpenStreetMap (read 22 October 2026).
- The elevation and land-cover rules used for other hubs (ground above 4,000 m, and land that ESA WorldCover 2021 maps as bare, snow and ice or open water, left out at the edge) take out less than 0.5% of the units, so the border is the units' own line.
- Check points inside the border: Changzhi, Yushe, Zuoquan. Outside it: Taiyuan, Jincheng.
Why Yushe and Zuoquan are included
The four landrace counties lie in Changzhi, and the encyclopedia names the Lu hemp after Changzhi. The gazetteer of 1734 names Liao and Qin as the places where hemp abounds. Qinzhou, with its county of Qinyuan (沁源), lies today in Changzhi. Liaozhou had its seat at today's Zuoquan, and its counties were Yushe and Heshun; Zuoquan and Yushe are drawn in with Changzhi for that reason. Whether Heshun, the other county of Liaozhou, belongs in the area is not settled by the sources: the gazetteer names hemp for the department as a whole, and no other source names Heshun. It is left outside the border.
The name
- The page takes the name of the city, Changzhi (长治), the name Li and colleagues give for the four landrace counties and the name in the encyclopedia's "山西长治潞麻" (the Lu hemp of Changzhi, Shanxi).
- Lu (潞) is the older name the hemp carries. Shangdang, the classical name of the plateau, appears in none of the hemp sources on the page. Lu'an, the name of the Qing prefecture of Lu, would be confused with Lu'an in Anhui, also a hemp district.
"Changshui" in the 2026 table
Li and colleagues print the origin of CZ44: "Xiangyuan, Changshui, Shanxi, China". Xiangyuan County lies in Changzhi, and no prefecture of Shanxi is called Changshui; the second word is taken as a slip for Changzhi. The article quotes the table unchanged.
Accessions inside the border
No herbarium sheet or seed lot on the wiki was collected inside the border.
Sources
- Li and colleagues (2026), Journal of Pharmaceutical Analysis: the paper and its Table S1. They call their lots landraces of hemp achenes and give each one's county; the article attributes both.
- 山西通志 (Gazetteer of Shanxi), compiled under Jueluo Shilin, preface dated 1734, juan 47 (products): the text of the Siku quanshu copy on Wikisource. The general entry on 麻 quotes Li Shizhen before adding the line on Liao and Qin; the line on Liaozhou stands under that department's own heading.
- The agricultural encyclopedia: three undated entries of an encyclopedia published online by China Agriculture Press (智汇三农): hemp, hemp cultivation and hemp germplasm resources.
Sources not used
- A short news teaser on the hemp acreage of Yushe County gives no full text, author or date beyond the teaser, and is not used.