Results 131 to 140 of about 972 (162)

Variability of throughfall erosivity among crown positions in a teak plantation based on raindrop measurements and throughfall partitioning

2021
<p>Knowledge of throughfall erosivity is necessary for the accurate prediction of soil erosion in some forests with little protective ground cover. This study compared throughfall drops and erosivity between open rainfall and for four different crown positions in a teak plantation in Thailand.
Kazuki Nanko, Nobuaki Tanaka, Michael Leuchner, Delphis Levia   +3 more
openaire   +1 more source

A Simple, Inexpensive Rain and Canopy Throughfall Collector

Journal of Environmental Quality, 1994
AbstractA field apparatus for collecting rain and canopy throughfall samples for volume and ion analyses was built and tested; detailed construction plans and material lists are included. Its advantages include simple wood and polyvinyl chloride pipe construction, low material costs, and an inert sample collector that remains covered until the rain ...
Robert, Glaubig, Anthony, Gomez
openaire   +2 more sources

Throughfall and Stemflow in Wooded Ecosystems

2011
Incident precipitation is routed to the subcanopy by throughfall and stemflow. Throughfall is defined as the precipitation that passes directly through a canopy or is initially intercepted by aboveground vegetative surfaces and subsequently drips from the canopy, whereas stemflow is the precipitation that drains from outlying leaves and branches and is
Delphis F. Levia, Richard F. Keim, Darryl E. Carlyle-Moses, Ethan E. Frost   +3 more
openaire   +1 more source

Considerations for Throughfall Chemistry Sample-Size Determination

Forest Science, 1989
Abstract Both the number of trees sampled per species and the number of sampling points under each tree are important throughfall sampling considerations. Chemical loadings obtained from an urban throughfall study were used to evaluate the relative importance of both of these sampling factors in tests for determining species' differences.
Pamela J. Edwards, Paul Mohai, Howard G. Halverson, David R. DeWalle   +3 more
openaire   +1 more source

A new method for determining the throughfall fraction and throughfall depth in vegetation canopies

Journal of Hydrology, 2010
Summary A new method for quantifying throughfall fractions and depths under vegetation canopies is introduced and evaluated. The method employs the progressive loss of weight of tablets of calcium sulphate hemihydrate (‘Plaster of Paris’) set out beneath conventional throughfall collecting funnels to form ‘throughfall integrating funnels’ (TIFs). The
openaire   +1 more source

Throughfall Chemistry and Canopy Processing Mechanisms

1990
Forest canopies receive chemical inputs from the atmosphere by rainfall, cloud droplet capture, and the accumulation of particles and vapors by dry deposition. These chemical inputs interact with surfaces in the canopy and are released to the forest floor primarily as throughfall (TF).
Douglas A. Schaefer, William A. Reiners
openaire   +1 more source

A Reassessment of Areal Variability of Throughfall Deposition Measurements

Ecological Applications, 1993
Throughfall deposition in a low—elevation red spruce—balsam fir stand in east—central Maine was measured for 10 chemical constituents over four sampling seasons to evaluate areal variability of throughfall deposition measurements. Forty collectors within one stand were sampled weekly and combined to provide 40 monthly samples.
Gregory B, Lawrence, Ivan J, Fernandez
openaire   +2 more sources

An empirical method for approximating canopy throughfall

Hydrological Processes, 2012
AbstractRainfall replenishes surface and subsurface water but is partially intercepted by a canopy. However, it is challenging to quantify the rainfall passing through the canopy (i.e. throughfall). This study derives simple‐to‐use empirical equations relating throughfall to canopy and rainfall characteristics.
Trinh, DH, Chui, TFM
openaire   +3 more sources

Notes: Determining Sample Size in Throughfall Studies

Forest Science, 1979
Abstract Variation in throughfall collection data is a major concern in nutrient cycling studies. In order to determine the magnitude of this variability in throughfall volume data collected in an oak-hickory stand in southern Illinois, regression equations were developed which indicate the sample size necessary for a specific level of ...
D. L. Peterson, G. L. Rolfe
openaire   +1 more source

Characteristics of Raindrop Throughfall Under Corn Canopy

Transactions of the ASAE, 1983
ABSTRACT A laboratory rainfall simulator was used to study the raindrop size and velocity under a corn canopy. Drop sizes were measured by using a dye-paper technique, and drop velocities were measured photographically. Stemflow was calculated on the basis of rainfall under the canopy and incident rainfall above the canopy.
null N. W. Quinn, null J. M. Laflen
openaire   +1 more source