Construction of Pest Relationship Network Based on Space Influence Domain and Its Analysis

doi:10.12068/j.issn.1005-3026.2016.12.007

Abstract

Abstract: Network science theory has become an important means to study the significant problems of the ecology. Based on the niches rule and the competitive exclusion principle， a model of space influence domain about the pest was proposed. According to this model， the pest relationship networks of Changbai Mountains were extracted from 2009 to 2013， and then the scale-free of network， important nodes and hierarchy were studied. The statistical results show that out-degree distribution follows a power-law， and the in-degree is well-distributed. The nodes， which exist in all networks and have larger out-degree， have also the larger betweenness value. But the nodes with larger in-degree is high-clustering locally. The hierarchical structure of networks is almost stable. Liaotung peninsula is the high-core area of pest occurring frequently and the most serious area of pest.

Key words: complex network, pest relationship network, space influence domain, scale-free, important nodes

CLC Number:

WANG Jin-fa， ZHAO Hai， LIU Xiao， LI He-qun. Construction of Pest Relationship Network Based on Space Influence Domain and Its Analysis[J]. Journal of Northeastern University Natural Science, 2016, 37(12): 1700-1704.

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