magic inflection points

In the previous post we looked at the movement of water from a bird's perspective, Now is the time to check out what is happening in cross. The two perspectives you can in your head put together a three-dimensional overall image that you can use to assess the presence of water in the landscape. Someone divining you do not need.

The slopes are steeper and steeper (convex slopes) we can expect that the water table (the blue line in the picture below) is about as far from the ground all the time. In slopes with the same slope all the way get gravity more and more impact and farther down the slope we move, the closer to the ground will ground water. The concave slopes, where the slope decreases more and more, this phenomenon is even more pronounced.

Really interesting is that in the real slopes, which of course is a mixture of all three basic types of slopes. As shown below, the basic water move back and forth from the ground several times in the same slope. The point is marked by the red arrow is where groundwater is closest to the surface. Here goes a convex slope into a concave and this point is called the inflection point.

 

Although the red dot in typical cases 2 i last post denotes a classical inflection point. Since we are in a hillside moving ground at all times and is well oxygenated. The inflection points we find the luxuriant vegetation of reality and also the sources are often in inflection, provided that the terrain looks like a typical case 2 above. You can dig away the earth at an inflection point, thus creating a fresh water source, and if you dig out a lot, you get a pond. Try to find inflection points the next time you are out in the field and check if there is any difference in the vegetation!

The only fault with this lovely south slope is that the two inflection points are not used for the cultivation of demanding plants.

In the next post: Help, I have laid out my woodland garden in a dry slope, what am I doing now?

Literature

Grip, Harald. and Rodhe, Allan. The path of water from rainfall to stream. Uppsala: Hallgren & Fallgren, 2000.

 

5 thoughts on “magic inflection points”

  • Thanks for the nice clear reading on mobile groundwater. Unfortunately, maybe the good moist valleys also the places where frost tends to strike an early summer night and early fall, but if the slope continues neröver so runs the cold air on down. Svedjehamn Finns scanned the undergrowth where they found such. stocks of linden, elm and Guelder rose in ev southwest end of things as they established their cultivation ladders.
    I'm looking for a good local cultivation of chestnuts Castanea sp. Mullhaltig hot well drained soil but with lower pH 5 – 6,5. In Europe the chestnut forests in the Alps and northern Romania is such conditions. Grateful for comments o Tips.

    • And, slash the Finns were really good at reading the landscape! Just right, the best inflection points is a little on the slope where the cold air can continue to pass. Rikkenstorp outside Grängesberg (http://rikkenstorp.se/) I have taken a lot of inspiration, they have a whole series of small dust of the inflection points. Even Ove Johanssons cultivation that I wrote about a while ago (https://skogsträdgården.stjärnsund.nu/sveriges-aldsta-skogstradgard/) such conditions have, long southwest slopes with highly variable soil water that comes close to the surface in a number of places.

      Looking for a place Castanea spp. anywhere in the country? Between Kivik and Simrishamn are the best locations I have seen, but there are certainly good locations on the West Coast also. Would be interesting to hear what you come to!

  • Very interesting!

    A friend of mine lives in Somalia and I wonder how Permaculture can be applied where. Any tips on where we can learn and where we can turn?

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