An approach to investigating insect pest of forest using Meteoreological Satellite Data
Liu Zhiming
Meteorological Science Institute of Jilin Province
Abstract
This paper presented the methods and results of pine moth decrease investigation in Big Xingan Mountain in the summer of 1990 using AVHRR data of meteorological satellite. Considering the possible effects of natural geographical environment and other diseases to the investigation, the areas and egress of insect pest were determined by analyzing RVI (Ratio Vegetation Index) map combined with field sampling investigation. In final the results of satellite and field investigation were anlaysed by contrast.
Introduction
The plant diseases and inset pests of forest are threatening the living of forest heavily. They reduce the quality of woods and affect the renewing of trees. People call them no-smoke forest fire because the economic losses for them reach or exceed that for forest fire. Therefore the areas and degrees of insect pests must be found out as earlier as possible, in order to make the relevant tactics of prevention and cure. Many advanced countries like USA, Canada and Finland lead advanced spacelight, aircraft and computer technology into the applied field, and have achieved notable results in investigating, forecasting and loss estimating of plant diseases and insect pests, and effect checking of prevention and cure.
The activities in our country started later, but some experiments and studies in the field ahs been finished using Landsat and aircraft data in recent years, and some experiences had been achieved. The paper will present some preliminary results of the investigation using meteorological satellite data.
