Population of pests such as diseases,insects,weeds and rodents,are apt to outburst and lead to biological disasters in changing environment,which can cause damage of ecosystem and degradation of ecosystem services.The evaluation of biological disasters was helpful to find the loss of ecosystems caused by pests and to reveal the problem of pest stress on the ecosystem.At present,the evaluation methods of loss of ecosystem caused by pests often used the evaluation of direct economic loss and the evaluation of ecosystem service value loss.In this paper,the quantitative evaluation methods of bioma...
