检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]复旦大学中国历史地理研究所,上海200433 [2]中国科学院地理研究所,北京100101
出 处:《地理研究》2000年第2期141-147,共7页Geographical Research
基 金:国家自然科学基金资助项目!( 4 9771 0 0 6)
摘 要:从北魏平城迁都、元朝中叶岭北地区移民、 1 2世纪初科尔沁沙地演变、明初兀良哈三卫南迁等四个历史实例出发 ,讨论了气候变冷变干时 ,农牧过渡带变化以及相应的社会变化现象。可以肯定 ,气候变化对历史上农牧过渡带变迁的影响是存在的。同时气候变化对农牧过渡带的影响是通过人类社会系统起作用的 ,不同的社会状态和组合会产生不同的农牧过渡带实况和相应的社会问题。当农耕民族与游牧民族在农牧过渡带附近对峙时 ,气候向寒冷方向的变化常常成为社会动荡的触发因素 ,极端情况下可以产生很严重的后果。The farming pastoral transitional zone in northern China is an active geographic phenomenon in historical times. It not only shows the occupational alternation between farmers of the Han nationality and herders of minority nationalities, but also reveals the shifting of combined terrain sharp in economy and culture. The transition zone is based on the climatic condition in terms of the natural background, and reflects the social economic patterns in a special natural condition of semi humid zone to arid zone. It has to change its terrain sharp when the climate shifts. After all, the farming pastoral transitional zone results from the interaction of natural condition with human society, and is affected by a number of elements from the two sides. This paper examines four cases in historical period, which happened in the process of climate dropping to cold and dry, and tries to analyze what come up in the transitional zone with climatic changes. The emperor of Northern Wei Dynasty, Xiaowendi, moved his capital southward from Pingcheng to Luoyang in A.D.493. The prosperous agricultural area surrounding the capital came down. Documentary evidences show that a continual drought from A.D.486~493 and cold, e.g. frost in July, were the main driving force to the decision making of moving capital. The Horqin Sandy Land was an active agricultural region during the control times of Liao Dynasty, the 10th ~11th centuries. When Nuzhen nationality defeated the Liao Dynasty in the beginning of the 12th century, the agricultural area was totally given up. The desertification was serious at least in part of Horqin sandy area. No solid evidence of social side can explain the farming abandoned phenomenon which was resulted from an excessive reclamation. Considering the temperature dropped down in the beginning of the 12th century, it can be believed that the climatic change was the main force to result in the farming abandoned phenomenon. In the beginning of the 14th century the climate turned to cold. The main effec
分 类 号:S162[农业科学—农业气象学] P467[农业科学—农业基础科学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.145.177.173