Zone 1 0-10 chains 



2 10-20 chains 



3 20-30 chains 



4 +30 chains 



A total of 294 1-milacre plots were distributed according to percentage 

 of total area within each 10-chain zone. Plot locations were selected 

 at random from a 2-chain by 5-chain grid superimposed on a map of the 

 cutting. Each 1-milacre plot was rated as stocked or nonstocked accord- 

 ing to each of two definitions: 



1. Stocked if containing one or more seedlings at least one year old, 

 in good condition, and free to grow; or two or more seedlings less 

 than one year old, in good condition, and free to grow. 



2. Stocked if containing two or more seedlings at least one year old, 

 in good condition, and free to grow. This would be a safer 

 criterion than No. 1. 



Although the 4-milacre quadrat method is the more common one, the 1- 

 milacre method was used here in order to get better distribution of 

 plots. The 1-railacre method gives results that can be related to the 

 4-milacre method. 



According to common practice a 4-milacre stocking of 70 percent indi- 

 cates about 1,500 seedlings per acre and a desired stocking. Satis- 

 factory is 40 to 69 percent. These figures by the 1-milacre method 

 would equal 32 percent and about 13 to 31 percent respectively. 



The Maybeso mile-square clearcutting has had a 40 percent stocking by 

 the 1-milacre method of advanced, established reproduction, largely 

 hemlock, since it was logged. These are seedlings that were alive 

 under the old-growth and remained after clearcutting. Study of stock- 

 ing by zones was confounded by these which bore no relationship to 

 distance from the edge of the cutting. After elimination of the 

 advanced hemlock, it was found that stocking decreased markedly with 

 increasing distance from the seed source. (Table 4.) 



More will be known about this subject when results of studies of 

 advanced reproduction are in. If it lives in quantity, then the 

 stocking of large cuttings as well as small is assured. Surveys in 

 1955 showed that this advanced reproduction was very evenly distributed 

 over the cutting with 60 percent stocking by the 4-milacre system. 

 In 1958 the stocking was practically the same. However, until results 

 are available the size of cuttings might better be held to a maximum of 

 about 20 chains diameter. This would assure plenty of seed reaching 

 all parts of the cutover area and during the short periods when slash 

 is dry enough to burn, would be a fire safety factor. 



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