JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2019, Vol. 54 ›› Issue (5): 61-67,76.doi: 10.6040/j.issn.1671-9352.0.2018.531

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Key sectors in input-output network

Jin-qiu GONG(),Jin XU*(),Fa-sheng HU   

  1. School of Mathematics, Shandong University, Jinan 250100, Shandong, China
  • Received:2018-09-23 Online:2019-05-20 Published:2019-05-09
  • Contact: Jin XU E-mail:gongjinqiu@mail.sdu.edu.cn;jinxu@sdu.edu.cn
  • Supported by:
    国家自然科学基金资助项目(11471193);国家自然科学基金资助项目(11271006);国家自然科学基金资助项目(11631014)

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Abstract:

As economic cooperation becomes closer and industrial network becomes more connected, changes in sector production will affect the output of its upstream and downstream sectors, directly or indirectly affecting other sectors, and thereby affecting the overall economy. From the perspective of intersectoral input-output network, the influence of each sector on the aggregate volatility is measured. The input-output network is constructed by direct consumption coefficient matrix to study the role of sectoral shocks in the aggregate volatility. On the basis of the established input-output network, the key sectors are depicted from the perspective of the impact on the aggregate volatility, whose productivity shock has the greatest impact on the output volatility of the entire network. The empirical analysis of China's 2012 input and output data shows that the wholesale and retail, agricultural product sectors have the greatest impact on the aggregate volatility through network linkages, which can be regarded as key sectors.

Key words: input-output network, aggregate volatility, key sectors

CLC Number: 

  • F223

Fig.1

Schematic diagram of input-output networkconsisting of four sectors"

Table 1

Ranking of China's network linkages influence coefficient in 2012 (top 10)"

排序部门名称bi/biifi网络关联影响系数
1批发和零售11.457 58.300 687.853 8
2农产品11.243 08.191 087.002 1
3货币金融和其他金融服务11.521 47.407 375.724 8
4精炼石油和核燃料加工品11.310 92.142 872.160 5
5电力、热力生产和供应11.137 74.449 268.871 3
6石油和天然气开采产品10.489 36.779 166.416 3
7基础化学原料8.674 52.007 254.855 2
8煤炭采选产品7.998 24.850 544.530 8
9有色金属及其合金和铸件7.930 71.897 841.636 5
10商务服务7.243 62.560 639.124 7
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