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Agricultural Tile Drainage Detection within the Year Using Ground Penetrating Radar

Karásek Petr, Nováková Eva

Journal of Ecological Engineering

2020

Vol. 21, nr 4

203--211

The aim of this study was to identify the tile drainage systems within the year (from spring to autumn) using the ground penetrating radar (GPR) geophysical method. The measurements were performed in the experimental locality Dehtáře in the Bohemo-Moravian Highland (Czech Republic) in the years 2016 and 2017. The profiles located in the drained area were repeatedly measured together with the drainage discharges, soil moisture and groundwater level. The best visibility of tile drains was observed during snowmelt (in March and April) when the drainage discharges usually reach their maximum. In other months, the visibility of the drains was variable, but mostly worse. For a reliable detection of individual drains, the measurements above the drainage must be performed in several profiles. Under the conditions of the Czech Republic, the best results were obtained by a 500 MHz frequency antenna.

Forest reclamation in the Lusatian Coal Mining District (Germany)

Houbold-Rosar M., Knoche D.

Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski

2007

nr 133 (13)

162-172

This paper offers practical advice for the site adapted afforestation after lignite mining in Lusatia, Germany. The dumped substrates are characterized by low availability of nitrogen and phosphorous and are in most cases free of humus. Pyrite oxidation in Tertiary substrates leads to extreme acidity. However, these properties limiting plant growth can be modified by a site-adapted basal amelioration with limestone and special measures of NPK fertilization. Thereby, even on extremely acid sulphurous mine soils, productive forests can be established. In good agreement with the natural vegetation of the region the afforestation with common oak, sessile oak and small-leaved lime is favoured for better substrates, like carboniferous loamy sand or loam. On sandy and gravely mine soils with low sorption capacity mixed stands with Scots pine, sessile oak and birch are suggested. The afforestation (spacing, planting method, mixing proportion) should be carried out according to experiences from the reforestation of unmined locations.