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Water erosion risk mapping using derived parameters from digital elevation model and remotely sensed data

Geo-Spatial Information Science 2012年第3期15卷 157-169页

作者： Soufiane MAIMOUNI Abderrazak EL-HARTI Abderrazak BANNARI El-Mostafa BACHAOUI Remote Sensing and Geographical Information Systems Laboratory Faculty of Science and TechniquesUniversity of Sultan Moulay SlimaneBeniMellalMorocco Remote Sensing and Geomatics of the Environment Laboratory Department of GeographyUniversity of OttawaOntarioCanada

The aim of this study is to map the areas exposed to water erosion risks in the High Atlas Mountains of Morocco around the Hassan-I *** methodology is based on the analysis of the water power index(WPI)as a hydrological parameter,the vegetation cover,and the litho-logical *** WPI was derived from a Digital Elevation Model(DEM)and the litho-logical units and vegetation cover were derived from Advanced Land Imager sensor on the Earth Observing-1 satellite *** image was corrected from radiometric and atmospheric effects,and geometrically rectified using a DEM and grounds control *** variables were integrated in a Geographical Information Systems environment,and Multi-Criteria Analyses were used to derive the water erosion risks map pointing out the most exposed areas requiring the implementation of suitable conservation *** validation of the obtained results shows the simplicity and the potential of this approach for water erosion risks mapping.

关键词： water erosion risks GIS remote sensing vegetation cover litho-logical units hydrological parameter

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Research on hydrological Environment Monitoring Equipment based on Embedded System

Research on Hydrological Environment Monitoring Equipment ba...

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第32届中国控制与决策会议

作者： Zhang Xiaodong Zhang Jie College of Electrical Engineering Henan University of Technology

Aiming at the shortcomings of traditional water environment monitoring device, a hydrological environment monitoring equipment based on embedded system is proposed in this thesis. The hydrological parameters information monitored by the equipment mainly includes water turbidity, air particulate concentration, atmospheric pressure data, and so on. These field data of water environment are collected by special sensors, which are driven by an embedded platform based on S3 C2440 microprocessor. The embedded platform obtains the monitoring data through the IIC communication protocol. Then, the hydrological environment monitoring data is stored in the embedded database and displayed on the LCD screen of the equipment on site. Furthermore, when the hydrological environment parameters exceed the predetermined monitoring standards, the monitoring information will be sent to users in the way of SMTP based e-mail and alerted automatically by the equipment. The remote users can access the hydrological monitoring equipment remotely and query the real-time monitoring information of the hydrological site in the form of web pages through the network. The test results show that the embedded hydrological environment monitoring equipment proposed in this thesis is convenient for monitoring the main hydrological parameters in time, and can fully meet the design requirements.

关键词： Embedded System hydrological parameter S3C2440 Monitoring Equipment

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