Tag: soil survey

Soil survey, or soil mapping, is the process of classifying soil types and other soil properties in a given area and geo-encoding such information. It applies the principles of soil science, and draws heavily from geomorphology, theories of soil formation, physical geography, and analysis of vegetation and land use patterns. Primary data for the soil survey are acquired by field sampling and by remote sensing. Remote sensing principally uses aerial photography, but LiDAR and other digital techniques are steadily gaining in popularity. In the past, a soil scientist would take hard-copies of aerial photography, topo-sheets, and mapping keys into the field with them. Today, a growing number of soil scientists bring a ruggedized tablet computer and GPS into the field with them. The tablet may be loaded with digital aerial photos, LiDAR, topography, soil geodatabases, mapping keys, and more.

Insights From the Journey

Insights From the Journey

One of the great gifts of writing is the knowledge that one gains from the research necessary to create intelligent composition. My high school English teacher—who also taught Kurt Vonnegut—once told me that there were seven basic plots in literature and not to worry about outlining a wholly original narrative,

An Integrated Watershed Assessment Tool for Restoration

An Integrated Watershed Assessment Tool for Restoration

The importance of water and water quality has become a heightened global concern as human populations grow, industrial and agricultural activities expand, impervious surfaces increase, and climate change threatens. The adoption of the federal Clean Water Act and related state and regional environmental regulations imposed on municipal separate storm sewer

Thinking Ahead of the Blaze

Thinking Ahead of the Blaze

It was the summer of 1979 when I fought my first wildfire. As a wild land firefighter, I spent the summer building trails, fighting fires, and lugging equipment in the forests of Oregon and Washington. In those days, I always wondered about what happened after the fire crews, TV cameras,

Reader Profile: Colin Barnard

Reader Profile: Colin Barnard

When Colin Barnard and his colleagues go to work, their gear may include a firearm for bear protection and a satellite phone for communications. Only recently was he able to get a 4G phone. Knowing survival skills and wilderness first aid is as essential as knowing how to mitigate environmental

Leaves: The Fulcrum on Which the Water Balance Rests

Leaves: The Fulcrum on Which the Water Balance Rests

The hydrologic cycle is an interwoven network of dynamic equilibria of water in all its physical states driven by the Sun. The incoming solar radiation is all the energy available to cycle water through the air, land, and plant life by technology of the green leaf. An exploratory evaluation of

Stormwater Infiltration in Clay Soils

Stormwater Infiltration in Clay Soils

Stormwater runoff from impervious surfaces is causing devastating effects on the landscape of our developing watersheds. We are disrupting the natural hydrological cycle that supports our potable water supplies and natural fauna. Intentional stormwater infiltration can restore that cycle. However, the lack of awareness and the perceived lack of data

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