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“...erosion control in Japan is like a game of chess. The forest engineer, after studying his eroding valley, makes his first move, locating and building one or more check dams. He waits to see what Nature's response is. This determines the forest engineer's next move, which may be another dam or two, an increase in the former dam, or the construction of side retaining walls. After another pause for observation, the next move is made and so on until erosion is checkmated." (An Agricultural Testament)” — Sir Albert Howard
...erosion control in Japan is like a game of chess. The forest
engineer, after studying his eroding valley, makes his first move, locating and building
one or more check dams. He waits to see what Nature's response is. This determines the
forest engineer's next move, which may be another dam or two, an increase in the former
dam, or the construction of side retaining walls. After another pause for observation, the
next move is made and so on until erosion is checkmated." (An Agricultural Testament)