. The school book of forestry . than others that do well underheavy shade. Oak trees require plenty of light;maples or beeches thrive on little light. The seed of trees requiring little light maybe scattered in a dense forest together with thatof trees which need plenty of daylight in orderto make normal growth. The seedlings that likeshade will develop under such conditions whilethose that need light will pine away and the shade-loving trees will replace thelight-loving trees in such a forest stand. Eventhe different trees of the same family often strivewith one another for ligh
. The school book of forestry . than others that do well underheavy shade. Oak trees require plenty of light;maples or beeches thrive on little light. The seed of trees requiring little light maybe scattered in a dense forest together with thatof trees which need plenty of daylight in orderto make normal growth. The seedlings that likeshade will develop under such conditions whilethose that need light will pine away and the shade-loving trees will replace thelight-loving trees in such a forest stand. Eventhe different trees of the same family often strivewith one another for light and moisture. Eachtree differs from every other one in shape andsize. Trees will adapt themselves to the lightand moisture conditions to which they are ex-posed. A tree that has access to plenty ofmoisture and sunlight grows evenly from theground to its top with a bushy, wide-spreadingcrown. The same tree, if it grows in the shade,will reach a greater height but will have a smallcompact crown. Trees run a race in their rapid-. THE SEQUOIAS OF CALIFORNIA THE FOREST FAMILIES 25 ity of growth. The winners get the desirableplaces in the sunlight and prosper. The losersdevelop into stunted trees that often die, due tolack of light exposure. A better quality of lum-ber results from tall straight trees than that pro-duced by the symmetrical, branching trees. Thatis why every forester who sets out trees tries toprovide conditions which will make them growtall and with the smallest possible covering ofbranches on the lower part of the trunks. Where trees are exposed to strong winds, theydevelop deep and strong root systems. Theyproduce large and strong trunks that can bendand resist violent winds which sway and twistthem in every direction. Such trees are muchstronger and sturdier than those that grow in asheltered forest. The trees that are blown downin the forest provide space for the introductionand growth of new varieties. These activitiesare constantly changing the type of tree g
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforests, bookyear1922
