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Applications of LandMapper handheld meter for near-surface ecological surveys and beyondтезисы доклада Краткое сообщение Тезисы
- Автор: Golovko Larisa
- Сборник: Окружающая среда и устойчивое развитие регионов: экологические вызовы XXI века
- Серия: Труды III международной конференции
- Тезисы
- Год издания: 2017
- Место издания: АН РТ Казань
- Первая страница: 288
- Последняя страница: 290
- Аннотация: On-the-go sensors, designed to measure soil electrical resistivity (ER) or electrical conductivity (EC) are vital for faster non-destructive ecological soil mapping and monitoring in precision agriculture, civil and environmental engineering, archaeology and other near-surface applications. Compared with electromagnetic methods and ground penetrating radar, methods of EC/ER measured with direct current and four-electrode probe have fewer limitations and were successfully applied on clayish and saline soils as well as on highly resistive stony and sandy soils. However, commercially available contact devices, which utilize a four-electrode principle, are bulky, very expensive, and can be used only on fallow fields. Multi-electrode ER-imaging systems applied in deep geophysical explorations are heavy, cumbersome and their use is usually cost-prohibited in many near surface applications, such as forestry, archaeology, environmental site assessment and cleanup, and in agricultural surveys on farms growing perennial horticultural crops, vegetables, or turf-grass. In such applications there is a need for accurate, portable, low-cost device to quickly check resistivity of the ground on-a-spot, especially on the sites non-accessible with heavy machinery. Our equipment utilizes well-known four-electrode principle to measure electrical conductivity or resistivity. Conductivity is just reciprocal of resistivity and thus ER results may as well be presented in convenient for soil scientists form of soil electrical conductivity (EC), which is routinely used to evaluate salinity of soils and irrigation water. However, EC can be used in many more applications than just soil salinity! Also ERM-04 can output natural electrical potential (EP) of soil and plants, which has some specific applications .
- Добавил в систему: Позднякова Лариса Анатольевна