Application of 3S technology on monitoring and prediction of the grassland rodents and insects

The rodents and insects are becoming more and more serious in grassland. It is one of important factors to grassland degradation, desertification and soil erosion, and further threaten the sustainable development of grassland animal husbandry. As a syntaxic technology, remote sensing has the following advantages: wider detective range, more information, lower cost, and less limitation to ground condition and human activity, spatial information and environmental messages can be collected, handled and updated quickly, flexibly, accurately and reliably. 3S technologies combined with the data collected from ground investigation can not only monitor the grassland on a macro scale, but also reflects the dynamics of the rodent and insect pests accurately. This paper was summarized the principles, methods and existed problems in monitoring the grassland pests with the 3S technologies, and analyzed the important content in this field study and the prospect of the application in the future.