DEVELOPMENT OF A DECISION SUPPORT SYSTEM FOR MANAGING PESTICIDE LOSSES IN AGRICULTURAL WATERSHEDS

摘要: In this study,a decision support system for managing pesticides losses in agricultural watersheds,based on a number of simulation,GIS and RS technologies was developed. The allows acquisition information through not only on-site survey but also technologies. Aerial photographs were used to generate DEM,and set terrain analysis methods employed calculate hydrological parameters that are needed the pesticide loss model. facilitates convenient management presentation vast amounts modeling inputs outputs user interfaces. A case study Kintore Creek Watershed,Ontario,Canada undertaken provide bases environmental watershed demonstrate practical applicability developed DSS. verified monitoring data,demonstrating reasonable prediction accuracy. result indicated model provides an effective means forecasting from agriculture lands. Especially,incorporation GIS remote sensing with powerful tool simulation management. major contribution is development new integrated simulating fate lands,as well as its application real Canadian study. detail,a dynamic developed,a solution algorithm implemented,and results verified. simulator enhanced incorporation within framework facilitate data management,as input/output presentation.