地理学

Adopting the method of demography and historical georgraphy,andon the basis of the administravie division of county and an imaginary Fu,this article reconstructs china's abnormal death roll during the period of 1959-1961,which amounts to 32,500thousand.

内容摘要：本文采用人口学和历史地理学的办法，以县级政区为基础，以虚拟的&府&级政区为企业，重建1959-1961年中国各地非正常死亡人口数。计算结果表明，1959-1961年中国的非正常死亡人口多达3250万。

adopting the method of demography and historical georgraphy,andon the basis of the administravie division of county and an imaginary fu,this article reconstructs china's abnormal death roll during the period of 1959-1961, which amounts to 32,500thousand.and we will find a great negative correlationbetween the death roll of 1959-1961and that of 1851-1875.this article believesthat,it is not the average resources and food in different regions,but the folk"historical memory"about famine that leads to this special result.

内容 摘要：本文采用人口学和历史地理学的方法，以县级政区为基础，以虚拟的&府&级政区为单位，重建1959-1961年中国各地非正常死亡人口数。计算结果表明，1959-1961年中国的非正常死亡人口多达3250万。将1959-1961年的分府死亡人口与1851-1875年的分府死人口进行对比，可知两个时代的人口非正常死亡呈强负相关。本文认为，造成这一奇特结果的原因在于民间关于饥荒的&历史记忆&，而与各个区域人均拥有的资源及粮食无关。

Adopting the method of demography and historical georgraphy,andon the basis of the administravie division of county and an imaginary Fu,this article reconstructs china's abnormal death roll during the period of 1959-1961,which amounts to 32,500thousand.

曹树基 提要：本文采用人口学和历史地理学的方法，以县级政区为基础，以虚拟的&府&级政区为单位，重建1959-1961年中国各地非正常死亡人口数。计算结果表明，1959-1961年中国的非正常死亡人口多达3250万。

Adopting the method of demography and historical georgraphy,andon the basis of the administravie division of county and an imaginary Fu,this article reconstructs china's abnormal death roll during the period of 1959-1961,which amounts to 32,500thousand.

3万篇免费论文，近200个详细分类，为你的论文写作排忧解难。点击进入内容摘要：本文采用人口学和历史地理学的方法，以县级政区为基础，以虚拟的&府&级政区为单位，重建1959-1961年中国各地非正常死亡人口数。计算结果表明，1959-1961年中国的非正常死亡人口多达3250万。

In the study, the author selects the Argan Region which is typical cases (in the lower reaches of Tarim River) and gathers some materials by means of fieldwork and according to the aeropho...

本文在此基础上，选择塔里木河下游的阿拉干这一典型地区，通过野外考察(1985年5月进行)和不同时期航空相片的判读、量算，针对地表形态的变化和其各种类型的动态分配，来说明该地区的沙漠化过程；并试图运用计量地理学的方法，建立一个多元线性回归方程的数字模型对该地区沙漠化过程的发展进行预测。

The paper introduces the contents, theories and methods of phylogeographical, especially illustrates Avise's five species distribution patterns, coalescent theories, advantages of mtDNA diversity analysis and Templeton's nested analysis.

介绍了系统地理学的研究内容、理论、方法，重点介绍了AVISE的5种物种分布模式、中性溯祖理论、mtDNA多态性分析的优越性以及TEMPLETON的巢式支系法。

National Geographic's Larsen Ice Shelf Expedition team will examine calving shelves and the bergs they spawn, determining how shelves fragment and how diminishing ice mass affects the world's oceans and climate.

国家地理学的Larsen冰架探险队将要检查冰架裂冰的原因和决定为什么冰架破碎和怎样逐渐缩小的冰块影响到世界的海洋和气候。

The essence of Boas's approach to ethnography is found in his early essay on "The Study of Geography."

鲍亚士民族志研究方法的本质，是立基於他早期对&地理学研究&的论文。

But the resources competition theories in earlier period have mainly come from chemostat model. Up to 90\'s in 20 centuries, a large numbers of species inhabit patchy environments due to fragmentation of landscape resulting from unreasonable economic activities by man.

到了20世纪90年代，由于人类不合理的经济活动造成景观格局的破碎化，使得大量的物种栖息于斑块状的环境中，于是生态学的理论中出现了岛屿生物地理学和集合种群的概念。

The morphological characters of all taxa in the matsutake group were analysed under phenetic classification and cladistic classifi...

本文由松口蘑群的形态学数量分类研究、分子系统学研究、生物地理学研究和单种描述四个部分组成。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。