Hyndman D C, Ulijaszek S J, Lourie J A
Department of Anthropology and Sociology, University of Queensland, St. Lucia, Australia.
Am J Phys Anthropol. 1989 May;79(1):89-101. doi: 10.1002/ajpa.1330790110.
There are some 40,000 indigenous peoples of the Fly River drainage in Papua New Guinea. The 4,000-mm rainfall contour ecologically demarcates hunter-horticulturalist peoples living in the rainforests of the Upper Fly from hunter-gatherer peoples living in the savanna-swamplands of the Middle and Lower Fly. A complex of factors operate to create significant physical differences between Upper Fly peoples and those of the Middle and Lower Fly. The ecological division between rainforests and savanna-swamplands demarcates a clear clinal separation by stature of Upper Fly peoples from those of the Middle and Lower Fly.
巴布亚新几内亚弗莱河流域约有40000名原住民。年降水量4000毫米的等高线在生态上划分出了生活在上游弗莱雨林中的狩猎-园艺民族和生活在中游及下游弗莱稀树草原-沼泽地的狩猎-采集民族。多种因素共同作用，使得上游弗莱地区的人与中游及下游弗莱地区的人在身体上存在显著差异。雨林和稀树草原-沼泽地之间的生态划分，通过身高明确显示出上游弗莱地区的人与中游及下游弗莱地区的人呈渐变式的差异。
