关键词: 人工沙棘林, 沙棘木蠹蛾, 灾害预警指标体系, 预警指标, 预警警级

Abstract: Seabuckthorn (Hippophae rhamnoides Linn.) is a pioneer tree species for windbreak and sand fixation, soil and water conservation and soil improvement, and is an important biological resource for regional economic development and biodiversity conservation. However, Hippophae rhamnoides plantation is susceptible to Eogystia hippophaecolus, a stem and root-boring pest. In order to explore and establish a quantitative early warning system for E. hippophaecolus disasters, and guide the prevention and control of inner feeding insects, this paper provided quantitative monitoring and early warning results for prevention and control of E. hippophaecolus. The index system of hazard warning for E. hippophaecolus was established combining indicator early-warning method with object property parsing method, and the police source, warning signs and police intelligence during the catastrophe process of E. hippophaecolus were evaluated as well. Taking the seabuckthorn plantation in Jinzhong city of Shanxi province as the sample area, the occurrence of the disasters of E. hippophaecolus was predicted. The results showed that the warning source, warning sign and police intelligence value were 22.9, 23.2 and 20.7, respectively, and the integrated warning value was 66.8, which meet the requirements of the police rating. The accuracy and practicability of the system were verified by applying the system to the prediction of the E. hippophaecolus disaster in artificial seabuckthorn forest in Jinzhong region of Shanxi province. It provided effective support for the construction of a forest pest hazard monitoring and early warning system, and provided a reference for the construction of disaster warning index systems for other wood borers. The pest damage degree was estimated, and the accurate positioning and early warning signals were issued as well, which provided information for further quantification of prevention and control measures to reduce the economic losses caused by the pest.

Key words: Seabuckthorn plantation, Eogystia hippophaecolus (Hua Chou, Fang et Chen), disaster warning indicator system, early warning indicators, alarming class