西辽河流域全新世以来的农业垦殖活动(英文)

编号 zgly0001585707

文献类型 期刊论文

文献题名 西辽河流域全新世以来的农业垦殖活动(英文)

作者 韩茂莉  赵玉蕙  张丹 

作者单位 CollegeofUrbanandEnvironmentalSciences  PekingUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2012年02期

年份 2012 

分类号 S-09 

关键词 XiliaoRiverValley  reclamation  settlement  man-landrelationship 

文摘内容 The agricultural reclamations in the Xiliao River Valley since the Holocene have led to a huge landscape change from grassland to farmland. In this paper we reconsider the man-land relationship in the Xiliao River Valley by analyzing three major agricultural reclamations in prehistory, the Liao-Jin Dynasty and the period since the Qing Dynasty. We argue that when the demographic pressure appears in this area, especially during the last reclamation, the intraregional migration (second migration) is the major response to relieve such pressure, which also distinguishes two different settlement locations: the initial area and the secondary area. Due to the environmental differences between these two areas, the cultivation on the latter one has caused more serious disturbance to the local environment. Thus the secondary area has become the key region which needs environmental management seri-ously.