130 



ARTIFICIAL REFORESTATION 



sary to wait until the talus can be terraced when it assumes a suffi- 

 ciently gentle slope to permit this work. The natural talus frequently 

 corresponds to a slope of 67 per cent while, with the use of terraces, 

 the ground can be stabilized up to a 100 per cent slope. (See Chapter 

 VII.) 



Species and Methods to Use. Jolyet n advocates the planting of 

 coniferous stands since they furnish a larger percentage of timber. 

 While he recognizes the force of the argument in favor of mixed forests 

 he favors a coniferous stand with some broadleaves to assist in the 

 preservation of soil conditions and to make natural regeneration more 

 convenient. He recommends the introduction of a very few species of 

 exotics. As for conifers he recommends the planting of spruce and 

 Scotch pine, and where there is a choice as to which of these to plant 

 he prefers Norway spruce on account of its rapid growth and high yield. 

 If for some reason or other so-called exotics have to be introduced Jolyet 

 especially favors the Japanese larch and the Douglas fir. He cites an 

 ideal plantation (made at Nancy by Cuif) spaced 5 by 5 feet, which 

 contained the following species in the ratio indicated: As major species, 

 spruce 44 per cent; Scotch pine, 31 per cent. As secondary species, 

 Japanese larch, 6 per cent; Douglas fir, 13 per cent; "concolor" fir, 

 3 per cent; beech and sycamore (each one-half), 3 per cent. Total, 

 100 per cent. 



Dinner, head of the " Reboisement " at Nice (which includes the 

 drier portions of the Southern Alps), uses aleppo pine on limestone soil 

 and maritime pine on sandy soil (only) up to 2,100 feet; for altitudes 

 of 2,100 to 4,500 feet he has found Austrian pine (see p. 167) better 

 than Scotch pine, his 20 years of experience having shown that it grows 

 more rapidly and has fewer enemies; above 4,500 feet he prefers larch. 



For various soil conditions Jolyet recommends the following species 

 and methods: 



TABLE 11. FOREST ATION METHODS FOR TYPICAL SOIL CONDITIONS 



IN FRANCE" 



(1) Areable land 



a Compiled and digested from Jolyet, pp. 468-520. 

 11 Quelles essences faut-il planter? Par Jolyet. Besangon, 1911, pp. 1-15. 



