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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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The impact of legacy map and field texture determination in digital soil mapping at farm level (a case study)тезисы доклада
- Авторы: Joulia Meshalkina, Pavel Dokuchaev
- Сборник: International Conference “Global Soil Map 2017” Moscow, Russia, July 4-6, 2017. Materials of conference
- Тезисы
- Год издания: 2017
- Место издания: Moscow, Russia
- Первая страница: 39
- Последняя страница: 39
- Аннотация: The study was performed at a farm situated on the North of Udmurt Republic of Russia. Eight soil types and subtypes that are typical for the south taiga zone were detected on the territory of 19 square km. Digital soil maps were produced using three algorithms on the base of two sets of covariates: terrain attributes and land use with and without legacy soil map. Texture of upper soil layer was determined by two methods: in the field and by the method of laser diffractometry. Digital texture maps were made using regression kriging on the base of the same two sets of covariates. The influence of the legacy soil map as covariate on digital soil maps was negligible, despite the fact that this legacy map was evaluated by experts as very good. This can be explained by the fact that the legacy and digital soil maps were made on the basis of the same relationships: soil formation factors - soils. Digital maps of the upper soil horizon texture produced on the base of two methods were similar to 40%. They were similar to legacy texture map also about to 40%. The study was partially supported by RSF grant 15-16-30007
- Добавил в систему: Мешалкина Юлия Львовна