Method for determining urban green space pest risk levels

Abstract

The invention provides a method for determining urban green space pest risk levels, which comprises the following steps: scoring a plurality of index layers of a pest source and acquiring the scores of the index layers, wherein the index layers comprise a plurality of specific risk evaluation indexes; calculating the scores of the index layers to obtain the score of a factor layer, wherein the factor layer comprises a plurality of evaluation factors consisting of a plurality of specific indexes; calculating the score of the factor layer to obtain the score of a program layer, wherein the program layer comprises a plurality of evaluation rules of the plurality of evaluation factors; calculating the score of the program layer to obtain the score of a target layer, wherein the index of the target layer is the comprehensive risk index of foreign species; and finally, determining the risk levels of the foreign species according to the calculation results. After the risk evaluation of foreign species, the method determines corresponding risk levels and determines the levels of the corresponding risk levels of the foreign species to determine whether manual interference is necessary, thereby ensuring the safety and controllability of organisms in urban green space.

Description

technical field [0001] The invention relates to a pest risk analysis method, and in particular to a method for determining the pest risk level of urban green spaces. Background technique [0002] In recent years, the rapid development of urbanization has led to a further increase in the proportion of exotic organisms. Taking Shanghai as an example, the plains here were originally formed by alluvial sediment. The resources of indigenous species are not rich, and exotic plants occupy a large part of Shanghai's flora. 57.4%. In recent years, in order to increase the variety of greening plants in Shanghai, the greening department has introduced a large number of plants from abroad, making this proportion even higher. In just five years from 1998 to 2003, the number of greening plant varieties in Shanghai has increased. According to the "Shanghai Greening System Planning", this number will continue to increase. However, when we introduce alien species, we are often blind and rar...

AI Technical Summary

Problems solved by technology

Therefore, although the large-scale introduction of urban greening may have an important impact on the improvement of the current poor urban ecological environment in the short term, in the long run, it may also bear the consequences of biological invasion in the unpredictable future. Because biological invasion is a lagging and slow process, its consequences often take quite a long time to manifest

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