The application of remote sensing and GIS in monitoring East Asia locust hazards
Received date: 2002-10-08
Revised date: 2003-01-23
Online published: 2003-04-15
Locust hazard is a destructive biological disaster It is amongst the three major natural hazards together with floods and droughts Once it outbreaks, it will severely threat to the safety of local agriculture, farmer’s income and the stability of society The combined use and analysis of remote sensing and GIS and their integration with historical records as well as some other field observational data can help to understand the characters of locust living environment, the occurrence time of locust hazard and the extent of locust hazard In recent years, locusts hazards in East Asia have become more server than before in terms of frequencies of occurrence and agriculture damages in eastern reed areas Based on statistics released by the Ministry of Agriculture, during summer and autumn of 1995～2000,about 8000 hm2 of farmland and grassland were affected by locust hazards In the summer of 2001 the affected area increased 50% and in the summer of 2002 other 10% was added in the affected areas In Dagang of Tianjin about 2400 hm2 were affected by the locusts, the most server case in the district with densities ranging from 1000 to 5000 heads/m2 ,far more exceeding the national prevention and control standards of 0 5 heads/m2 Presently, the traditional locust observation forecasting system is still used It is very difficult to deal with the new development situation of locust habitat, the increase of affected area and new outbreaks are just the cases In this paper we introduced our recent research results in using remote sensing to detect locust egg hatching conditions, soil temperature and soil moisture in combination with field observations to implement the migratory locust hazard information monitoring system
Key words： remote sensing; GIS; East Asia migratory locust; hazards
HAN Xiu zhen, MA Jian wen, LUO Jing ning, ZHANG Yue jin, TANG Jin yi . The application of remote sensing and GIS in monitoring East Asia locust hazards[J]. GEOGRAPHICAL RESEARCH, 2003 , 22(2) : 253 -260 . DOI: 10.11821/yj2003020015
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