Freezing and thawing under a periglacial climate have been put forward by some geologists
to explain the frequent evidence of disturbance observable in soil profiles. The present …

No evidence has been found in eastern deciduous forests to substantiate statements that
curved tree trunks, downslope tilted tree trunks, and upslope trailing tree root systems are …

T is well known that the boles and crowns of trees frequently attain massive proportions. The
fact that the root systems also attain great size, extending vertically into the soil and …

Data on the depth and spread of 31 species of trees and shrubs were collected at Fargo,
North Dakota. The average rainfall in this area is 22.34", but for the past 15 years it has been …

soils because of the intimate asso-ciation between the soil and the roots of the trees, and the
effect of soil properties on the absorption of water and nutrients. We know that certain …

1. Half shade favored the growth of seedlings of black walnut, buckeye, red oak, shellbark
hickory, and hard maple but retarded growth of honey locust, boxelder, and sycamore. 2 …

Soil sampling. in forests and attempts to correlate plant growth with soil attrib utes are
complicated. by variability in soil properties, not only vertically as a result of soil …

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Tree trunks are often curved as a result of external factors including catastrophic events, the
availability of light, and soil creep. Where trees with curved trunks due to soil creep can be …

INTRODUCTION Root developittent ill gr: issland has been sht1 (lied ianv Xyetars. A survey
of the underground plant parts in the Palouse Prairie of southeastern Washington was naide …