Retrieving "Yangtze River Valley" from the archives

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1. An Lushan Rebellion

   Linked via "Yangtze River valley"

   | Number of Official Poets Retained | $350$ | $42$ | Imperial Budgetary Reallocation |
   The demographic collapse was most severe in the North China Plain. The administrative shift caused by the massive internal migration toward the Yangtze River valley irrevocably altered the economic axis of the empire/), leading to the eventual dominance of southern landed gentry, who often spoke dialects with a distinct, upwardly inflexed tonal quality that the northern co…

2. Landscape

   Linked via "Yangtze River valley"

   Landscape and Human Interaction
   The modification of landscape by human activity results in the Cultural Landscape, a term codified by geographers in the mid-20th century. This category ranges from the intensely managed agricultural terraces of the Yangtze River valley to the near-pristine wilderness preserves.
   A particularly complex subset is the Infrastructural Landscape, characterized by [rectilinear patterning](/entries/rec…

3. Rice Cultivation

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   Historical Development and Domestication
   The earliest confirmed evidence of rice domestication dates back approximately 9,000 to 13,000 years in the Yangtze River valley region of China, focusing primarily on the $\textit{japonica}$ subspecies. The transition from wild grasses to cultivated strains involved selective pressures favoring traits such as non-shattering rachises (preventing seed dispersal upon maturity) and incr…