Bioretention cells are incorporated as part of low impact development LID because of their ability to release influent runoff as exfiltration to the soil or evapotranspiration to the atmosphere. However, little care is taken as to the techniques used to excavate bioretention cells, and there is little concern as to the soil-moisture condition during excavation. Certain excavation techniques and...

Introduction of fuel hydrocarbons and inorganic compounds (heavy metals) into the soil, resulting in a change of the soil quality, which is likely to affect use of the soil or endangering public health and ground water. This study aimed to determine a series of parameters to remediation of TPH and heavy metals contaminated soil by non-ionic surfactants- chelating agents washing process. In this...

Two solutions for UHF RFID tags for soil moisture sensing were designed and are described in this paper. In the first, two conventional tags (standard transponders) are employed: one, placed close to the soil surface, is the sensor tag, while the other, separated from the soil, is the reference for system calibration. By transmission power ramps, the tag's turn-on power levels are measured and ...

soil temperature is one of the most effective parameters for plant growth. although the spatiotemporal monitoring of soil temperature is important for providing an optimum condition to maximize the yield efficiency, indirect measurements for zoning  of soil temperature are essential due to difficulties in direct methods of measuring it and also the limited measurement points. thus, the efficien...

The Bowen ratio (B) is impacted by 5 environmental elements: soil moisture availabillity, m, the ratio of resistr ances between atmosphere and soil pores,~, atmospheric relative humidity, h, atmospheric stability, 6.T, and envirD ronment temperature. These impacts have been investigated over diverse surfaces, including bare soil, free water surface, and vegetation covered land, using an analyti...

L-band and C-band microwave radar observations can help to measure the properties of snow cover on land by providing information about he soil-snow boundary condition. In this theoretical study, we xamine the sensitivities of microwave radar measurements to soil and snow characteristics, and we compare a simple model with previously published data. These data show that the thermal insulation pr...

more understanding of root water uptake (rwu) can lead us to discharge the irrigation water in soil in a water stress condition. the main objective of this research is measurement of rwu by bean in a water stress condition. a completely randomized design was employed in greenhouse condition concerning four treatments and four replications. the treatments were fi: full irrigation as control, di8...

Soil compaction by machine used in forest harvesting operation caused negative impacts for regeneration and tree growth. This research was intended to analyze the effectiveness of using slash to decrease soil compaction, to analyze soil compaction at various soil depths, and to measure rut depth at soil surface. Valmet 860.1 forwarder was used in this research. Soil compaction was measured thro...