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21 Acres Mapping Group

21 Acres Mapping Group. Satori Johnson, Rainer Oviir , Sam Shupe BES 318 Winter 2010. W. University of Washington Bothell. Objectives:. To measure topsoil depths for plots D, E1, E2, G, H1, and H2. Observe differences in soil texture and color in underlying layers.

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21 Acres Mapping Group

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  1. 21 Acres Mapping Group Satori Johnson, Rainer Oviir, Sam Shupe BES 318 Winter 2010 W University of Washington Bothell

  2. Objectives: • To measure topsoil depths for plots D, E1, E2, G, H1, and H2. • Observe differences in soil texture and color in underlying layers.

  3. Methods & Procedures • Nine measurements collected in each plot. • Depth was measured at change of soil characteristics.

  4. Results:

  5. What we saw: This photograph was taken from plot D and shows the change in soil composition. The depth of the topsoil at this site was 15 inches. The underlying layer was mostly clay with a low percentage of silt and almost no sand.

  6. The big picture: • Topsoil depth was greater than expected • Information useful for planning crop plantings • Soil composition in layers below topsoil were diverse and changed drastically from one site to the next.

  7. Limitations and Future recommendations: • Limitations: • Research errors – inaccurate measurements • Measurements were taken one week apart • Future work: • Cross-reference findings with data obtained by infiltration rates group, soil hydraulic properties group, and soil nutrients and organic matter group • Conduct more comprehensive soil profile analysis.

  8. Acknowledgements: 21 Acres’ education director, Dave Muehleisen21 Acres staff & VolunteersDr. Robert Turner

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