中文摘要：

目前中国地学领域对网络的研究仍处于起步阶段，大量网络研究方法尚未得到应用的同时，许多地理现象尚未寻找到合适的抽象网络模型，不断拓展和应用有效的网络分析方法成为当务之急。在这一背景下，基于百度迁徙平台获取的春运人口流动大数据，构建中国春运人口流动的有向加权城市网络，在已有研究基础上提出有向转变中心性与控制力测度方法，对该城市网络的节点重要性和功能进行评估和分类，分析其呈现的二维空间特征与地理空间分布特征，并与已有方法进行对比。结果表明：利用有向转变中心性和控制力方法，可有效提取有向加权网络的层级结构、功能分异和非均衡性等特征，不但可区分典型城市、枢纽城市、门户城市与边缘城市等不同的城市类型，还可以识别城市的集聚与扩散特征，从而获得比无权无向网络更为丰富和具有实践意义的信息参考，是一种有效的地理网络分析方法。

英文摘要：

With the rapid development of ICTs and big data technology, various ＂flow＂ data have become easier to be obtained such as population flows, information flows and capital flows. These data are key material to build the production network, social network, urban network and other types of network, which are becoming very important research subjects of geographical sciences and enrich the research content of this field. So far, researches on the networks in geography are still in their infancy stage. There are a number of methods that have not been utilized effectively, while it is difficult to find a proper abstracted network model to simulate the geographical phenomenon in many occasions. Therefore, to seek more appropriate methods and models for geographical network studies undoubtedly become urgent tasks in this field. In this context, an exploratory research was carried out. First, population flow network of China in the period of ＂Chunyun＂, a typical directed-weighted urban network, was built based on the population flow data acquired from ＂Big data on human migration during the ＂Chunyun＂ period from Baidu Map （＂Baidu migration data＂ in short）. Sequentially directed alternative centrality and directed alternative power were proposed in predecessor＇s foundation to evaluate the importance of each node and divide these nodes into different types according to their roles in the urban network. As analysis result, two dimensional spatial characteristic and geographical spatial characteristic was revealed which endowed the methods more practical significances. To validate the effectiveness of the methods, a contrastive analysis of the directed alternative centrality/directed alternative power and centrality/directed alternative power in previous studies was conducted. Based on directed weighted urban network and with the help of this method, this paper classified the cities into quintessential cities, hub cities, gateway cities and periphery cites, and identified the characteristics of agglomer