Читать книгу China's Rural Labor Migration and Its Economic Development - Xiaoguang Liu - Страница 22

First, the indicator of highway density is constructed using the ratio of the highway mileage of Chinese provinces and regions to the area of provinces and regions to be used as the main measurement indicator of the level of infrastructure. The data of highway mileage and land area in all provinces and regions were taken from the China Statistical Yearbook. The village roads were taken into account to calculate the highway mileage after 2006, causing an inconsistent caliber of statistics. Considering basically no impact on the transfer of the urban and rural labor force by village roads, the mileage of village roads is excluded from the highway mileage of the period 2006–2010 to calculate the highway density as the key measurement variable of the level of infrastructure. Specifically, in order to adjust the caliber, some data about village road mileage from 2006 to 2010 are first found from statistical yearbooks, traffic yearbooks and the official websites of the transportation departments of various provinces and regions and then excluded. The remaining data were estimated approximately by the average ratio of the village road data at the start and end of the period to the highway mileage data containing village roads. In addition, this chapter also examines the impact of the level of communications infrastructure on the transfer of agricultural labor and selects the ratio of the number of mobile phones and public telephones to the number of rural employees as the measurement indicator of the level of infrastructure.