East-West Orientation of Historical Empires
East-West Orientation of Historical Empires
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历史帝国的东西向
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
T. D. Hall
中科院分区：
文献类型：
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作者：
P. Turchin;Jonathan M Adams;T. D. Hall
在题为“宽敞的天空和倾斜的轴”的一章中，贾里德·戴蒙德（Jared Diamond，1997）认为，粮食生产更容易沿纬度（东西向）而不是纵向传播。纬度转移更容易，因为相似的气候和土壤类型往往排列在东西向的带中。全球生物群落分布图最能说明这种地理格局（图 1）。生物群落是生态群落的主要类型，例如草原、沙漠或温带季节性森林（Ricklefs 2001）。
In a chapter entitled “Spacious Skies and Tilted Axes” Jared Diamond (1997) argued that food production spreads more easily latitudinally (in the East-West direction) rather than longitudinally. A latitudinal shift is easier because similar climates and soil types tend to be arranged in east-west oriented bands. This geographic pattern is best illustrated by a map of the global distribution of biomes (Figure 1). A biome is a major type of ecological community such as the grassland, desert, or temperate seasonal forest (Ricklefs 2001).