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• ~ ~ Technical- Cuide ~ ~ ~ _ <br /> Section~Il-F l3ood land. <br />. ~ Resource Areas 74,35._ <br /> 47,4B,49,51~69 ,70 <br /> - 4ta rch 1, 1966 <br />- ~ . ~ 11N TTC• D STATES DEPARTMENT OF AG.^.IC ULTUIiG <br />• <br />' ~ ~ Soil Conservation .Service ~ <br />- ~ ~Colovado <br /> -PINYON - JUNIPER <br />. ~ ~ SLTL• DESCP.IPT IONS - ' <br />a~nse Sn Elevation: 5,000 -.7,500 feet - San Luis Valley 8,000-9,000 <br />.'rccipiCatlon Range: - 12 to 15 inches <br />:+.•c rage Annual Temperature: 49° - 53° F <br />rust Free Period:. 60 - 120 days <br />'-:encral Deseri ot.ion of the tvoe: .The pinyon -,juniper type woodland occurs at the <br />lowest elevations. of the coniferous woodland types in Colorado. IC is the <br />transition zone be tcveen grasslands and the montane forests, At the lower'llmits <br />cl,e type may consist of scattered to almost pure Stands of Utah. juniper on .the <br />:~c stern slope, and. one seeded juniper on the~Eastern slope. As the type .blends <br />into the Ponderosa pine or oakbrush types, pinyon pine 'and Rocl<y Hountain jun1- <br />per become the dominant species. Between -the extremes pinyon and the various. <br />junipers Constitute a true plant association. <br />Associated Werstorv planCS: Except for stunted ponderosa pine near'the upper. ~ . <br />elevations of th'e type there are no assoc3atedtrees in~the type,. - ~ . <br />Associated Understoz'y .plants: ~~ <br />• Upper Limits ~ - _ <br />:Mountain mahogany, indfan rice grass, mutton.grass, sedgesy prarie junegras s~, <br />big sagebrush (west $lope7, service berry, cliff rose. <br />lower Limits. <br />tndian race grass, blue grams; ga lleta,~cheatgrass, Fendlar three awn, Rabbit- <br />brush, Snak eweed, Fleabane. ~ - <br />Effects of AsoecC and Position: AC upper limits of type it prefers south and'wesc <br />facing slopes. 'On slopes the density is usually less ehan on Flatter areas. <br />:fe sa tops, moderately sloping lands, and valley floors usually have more dense <br />stands. <br />SSCe Lndex: No site index curves are available for Chase Species. While Some . <br />stands wi 11 reach heights of over 35 feet, many stands do not reach over 20 <br />feet. Because of the. uniformity of thecype no site index caill be used. <br />Light tolerance: To secure reproduction some shade is needed, but the best growth <br />is~made 1n full sunlight. <br />Uses of the Species: Junipers are a good source of fence posts. Pinyon pine is a <br />. good fuel wood species and good'for Christmas trees. Some trees on areas o.f <br />deeper soils are balled and bur lapped ~as ornamental trees. Pinyon nuts in <br />^ooA seed years are also a valuable product, <br />• (RevisedAUgusizoos) Attachment 2.04.10.4-9 <br />r <br />