先秦两汉时期铁器的生产应用与社会发展进程问题——读《先秦两汉铁器的考古学研究》

白云翔先生所著<先秦两汉铁器的考古学研究>一书出版已有些时日.我因早年研究过中国古代冶铁术,出版之初即通读了该书,并打算撰写书评,但考虑到自己近年的研究兴趣已更多地转移到了商代考古领域,未敢轻易置喙.最近再次拜读云翔先生的大作,深信该书提出的诸多议题,应引起学术界高度重视,故不揣浅陋,对有关问题略加讨论,不当之处,敬请作者和学界同仁指正.     

Blooming Kelsang FLOWERS

正Eagles soar overhead in April.Snowcovered Mt.Droda stands firm,and the Yarlung Tsangpo River is bordered by lovely,green farms.Willows sprout with tender shoots along the river bank.The entire plateau is peaceful.Garze in Tibetan refers to the beauty     

旅游经济影响评估——线性规划在旅游决策中的运用

本文向旅游规划者提供线性规划模型,将其应用到国家级自然风景区--天柱山所在地潜山县,以此研究旅游发展对经济的影响,并建立一个基准水平作为比较的基础.     

Early history of Chinese domestic sheep indicated by ancient DNA analysis of Bronze Age individuals

China has a long history of sheep husbandry, and has several indigenous sheep breeds. However, the exact geographic origin of Chinese domestic sheep remains unclear. To provide valuable genetic information for origin of Chinese domestic sheep, we performed an ancient DNA study on 22 sheep excavated from four Bronze Age archaeological sites in Northern China. Two lineages (A and B) were observed in ancient Chinese sheep, of which lineage A was predominant reaching a frequency of 95.5%. Furthermore, phylogenetic network showed that the most frequent haplotype in ancient sheep was the founder of lineage A. These results suggest that Lineage A may hold the key to understanding the origin of Chinese domestic sheep. Sequence sharing and principal component analysis showed that the ancient Chinese sheep had a close affinity to modern Chinese sheep. However, there was no significant breed structure among three modern Chinese sheep groups, making it difficult to determine their relationship to ancient Chinese sheep. Lastly, our results imply that ancient DNA analysis could provide a new way to investigate prehistoric East-West contact.     

高铁沿线旅游流网络结构及其互动关系研究——以合福高铁沿线地区为例

利用复杂网络分析方法，对合福高铁沿线城市和景区两个尺度上的旅游流网络结构和互动关系进行研究。结果表明：①合福高铁沿线旅游流网络规模大，覆盖面积广，但网络密度极低，具有显著的"中心-外围"结构；②合福高铁沿线核心旅游城市和重点旅游景区在网络中的功能突出、角色重要，其中高能级景区表现出较强的辐射效应，对周边节点具有较强的带动作用；③合福高铁沿线旅游景区之间已经形成了"一超多强"、"双核互动"和"单节点"三种合作关系，但网络中的合作关系受行政边界的屏蔽仍十分明显。