摘要
林业有害生物的频繁发生,使森林资源遭受损失,林产品数量减少,质量降低,不仅造成直接经济损失,同时也使森林环境受到影响,严重制约着生态建设的进程。该文在借鉴现有灾害损失评估经验的基础上,根据柞树有害生物发生现状,建立科学完整的评估指标体系与准确的量纲,构建数学模型,客观反映了柞树有害生物造成的直接和间接经济损失的现状。
The frequent occurrence of forest pests causes the loss of forest resource,the decrease of wood product and their quality. It not only causes direct financial loss but also influence the forest environment,weighing down the process of ecology development. This article draws on the experience of present disaster loss assessment,establishes a scientific complete assessment index system and accurate measurement,set up mathematical models,and shows the current situation of direct and indirect financial losses of oak pests
出处
《辽宁林业科技》
2014年第5期22-25,共4页
Liaoning Forestry Science and Technology
