6560Re: Hay is enough!
- Oct 9, 2007Hello Dieter,
Thanks for the very interesting observations about using logs and
woody debris. I also observe that Nature will use deadfall or
windfall trees to stabilize slopes by laying them down the
slope--that is, the fallen treetop points directly down the slope,
while humans lay the tree trunks contoured, crosswise to the
slope--because terraces are easier to walk and work on than unbroken
slopes. I would make a distinction between logs, which have no
remaining limbs, and fallen trees, which do. It makes sense to use
logs on the contour because they are limbless.
In this region, we have major windstorms every few years that blow
down many trees. Typically, the falling tree goes with gravity, and
winds up with its crown pointing down-slope. the horizontal branches
then become small contours and check-dams to catch leaves, debris,
and slow the runoff. In most cases, revegetation takes place very
quickly within one to two years.
Evidently both vertical and horizontal placement of woody stems on
sloping land have their benefits, according to the situation. Best,
At 10:15 AM +0000 10/9/07, email@example.com wrote:
>I still use logs, branches etc. for planting trees on the hills. I place the--
>logs along the contour of a hillside, plant the tree with some loose soil
>behind the logs (if there is clay soil, I make sure it goes in at the bottom),
>then sprinkle everything with a little black soil (mostly half decomposed
>organic matter) from the wooded part of our land so as to introduce fungi
>for accelerating decomposition and top the whole with a layer of leaves.
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