. The theory and practice of working plans (forest organization) . ecause of the imminentdanger of windfall in spruce, the lines are run parallel with andat right angles to the prevailing wind direction. Stands (subcompartments) are segregated down to a mini-mum area of half an acre. The prevalent uniformity of con-ditions permits of tabulated forest descriptions. Site quality isgauged both according to the intrinsic quality of the soil (Stand-ortsbonitiit) and according to the quality of the stand growingthereon (Bestandsbonitat). The two by no means always coin-cide; for the stand growing on
. The theory and practice of working plans (forest organization) . ecause of the imminentdanger of windfall in spruce, the lines are run parallel with andat right angles to the prevailing wind direction. Stands (subcompartments) are segregated down to a mini-mum area of half an acre. The prevalent uniformity of con-ditions permits of tabulated forest descriptions. Site quality isgauged both according to the intrinsic quality of the soil (Stand-ortsbonitiit) and according to the quality of the stand growingthereon (Bestandsbonitat). The two by no means always coin-cide; for the stand growing on a certain site is not necessarilythe one best suited to it. The age classes are in twenty-year gradations—each ageclass is again divided in half so that the age-class distribution isrecorded by decades. Owing to the great regularity of the stands. calij)cring is notordinarily necessary. Stands less than half of the usual rota-tion of eighty years are estimated from yield tables; stands * For outline of Saxon working plan, see Part Qnc, Chapter III, Section THE THEORY AND PRACTICE OF WORKING PLANS 161 over forty years old are estimated ocularly and reestimated ateach ten-year revision. Where clear cutting preponderates, the normal annual cutis taken roughly as the total area divided by the rotation. Theproper rotation age is determined by applying the index percent (Weiserprozent) to the individual stand, , determiningthe maximum value increment (see Part One, Chapter I, Sec-tion 3). Tables of value increment have been prepared forthe whole kingdom of Saxony, based on the prices secured inthe open market for the various classes of timber. Saxon forestry foots on the soil-rent basis. In order to showthe profits of management on this basis, the net income for thewhole forest is compared with the total cost of is done for purposes of forest organization, by determiningthe timber and soil capital which the forest represents andthen showing in tabular form
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
