The ebb and flow of Northern limit of Citrus cultivation, represented by ‘the Citrus Change the Trifoliate Orange,’ reflects the history of climatic variation in China. Climate has been changing constantly in the last 5,000 years. The change made the Northern limit of Citrus cultivation go up and down repeatedly. Huai-River was lying on the border of the limitation during the Chunchou-Period. In the second century B. C. the temperature was milder than today, even though the line moved to the southern area, Chang-River area. After the Nanbeichao-Period consisted of cold current, the warm climate during the Xiu·Tang-Period let the line of limit go northward until the Huai-River. The climate warming contributed to make Dongting-Mountain into the largest production region of mandarins. The Song-Period was also warm, because ‘Medieval Warm Period’ maintained until this period. The twelfth century was very cold, in particular, so that the arable boundary of citrus fruits moved back to the south until the Chang-River. In the thirteenth century, it went up and reached Huai-River again. As the Little Ice Age started, the belt of citrus cultivation came south back again. Especially, the seventeenth century was cold, so the changed current became a cause of freezing to death of citrus fruits in areas which located southern parts of Jiangnan - Jiagnxi, Hunan, Anhui, Zhejang. During the Little Ice Age the latitude of the northern limit of citrus cultivation had moved two to three degrees southwards. This demonstrates how much the areas were cold. This also suggests that there was a huge conversion of eco-system at that time. It should be remembered that the human history makes its progress in the context of the overwhelming change.
동북아시아문화학회 [The Association of North-east Asian Cultures]
설립연도
2000
분야
복합학>학제간연구
소개
동북아시아 문화의 다양성과 정체성을 연구 토론하고, 지역내 문화 교류의 다양한 모습을 연구하고 문화변동의 큰 틀을 집적함으로써 우리 민족 문화 및 상대 민족의 문화적 터전을 이해하여 문화공동체적 특성을 계발하고 상호 관련성의 강화를 유도하는 학술활동을 통해 동북아시아의 문화발전에 이바지함.