A conclusion, based on these considerations,must be that farmers should be financed toprovide more and bulkier hedges, morenumerous hedgerow trees and substantial areasof wood pasture. Oxygenation with carbonsequestration should be a crop purchasedfrom them.21A free standing tree with foliageDiagram of leaf cover all round this typical freeall round.standing tree. The white rectangle represents a3cylinder, 8m radius, 12m high. The black semi-circlerepresents a half sphere, 8m radius.Diagrams of ImplicationsA conclusion, based on these considerations, must be thatfarmers should be financed to provide more and bulkierhedges, more numerous hedgerow trees and substantialareas of wood pasture. Oxygenation with carbonsequestration should be a crop purchased from them.1. Comparison of leaf surface area of2. Leaf surface of a 0.25 ha freestand-3. Leaf surface area of a corner of atop canopy of continuous woodlanding copse: The plan and top crosswood pasture or arboretum: This dia-and freestanding trees: On left 0.5 hasection show the leaf surface area of agram shows a 0.5ha corner of a wood(70.71x70.71m) of continuous woodland0.25ha freestanding copse 15-20 yearspasture or an arboretum with varioushas a leaf surface of 5,000m2, similarafter planting, having a nominal leaftrees at some 20m centres; its nominalto five mature freestanding trees assurface of 4,833m2;leaf surface area is 11,500m2, which isshown in a 0.5ha square on the right(70.71x35.35m) + sides, including low2.3 times that of the same area of con-(5x1005 = 5,025m2).level shrubs: 2,333m2 (height 11m xtinuous woodland;length 70.71m x3) = 4,833m2].(length 126m x 5m across) + 8.5 matureThe lower cross section shows thetrees: 8,543m2 (8.5 x 1005m2) + 3.5 smallmature copse with a nominal leaf sur-trees: 1085m2 (3.5 x 310m2) + one extraface area of 7,167m2; [i.e. top: 2,500m2large tree say 1,242m2 = 11,500m2.][i.e. top: 2,500m2+ sides: 4,667m2 (height 22m x length70.71x3m) = 7,167m2].* Surface area of this mature free-standing tree: 2x3.14x8x8 (top: half sphere) +2x3.14x8x12 (sides; cylinder) = 402 + 603 =1005m2[i.e. hedge: 630m23
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