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The Evolution of Forest Inventory on the Warm Springs Indian Reservation Allan D. Derickson Forest Planning & Inventory Supervisor Confederated Tribes of Warm Springs
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East Slope Cascades 1,000 ft to 10,000 ft Reservation established in 1855 for Wasco and Warm Springs Indians Paiutes added in 1879 Kah-Nee-Ta
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Warm Springs Forest Management 644,000 total acres 423,000 forested acres 315,000 unreserved forested acres 256,000 net commercial forest acres Over 3 billion board feet of inventory 25 commercial tree species 27 different plant associations
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Warm Springs Forest Management 1992 - Integrated Resource Management Plan Traditional Cultural Uses Water and Fish Wildlife Timber Grazing Other Economic Development Recreation
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Harvest Scheduling Constraints Must plan by watershed (12) Retention trees at 5-15 tpa Minimum stand age requirements: 70 years Selected stands constrained temporarily for wildlife cover Harvest priority respected. No low or stable OG
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Harvest Priority Unhealthy High Value 1 Average High Value 4 Vigorous High Value 7 Unhealthy Mod Value 2 Average Mod Value 5 Vigorous Mod Value 8 Unhealthy Low Value 3 Average Low Value 6 Vigorous Low Value 9
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Conditional Use Areas Have one or more of the following: Extremely low productivity Very difficult logging or access Possess other high resource values Spiritually significant to Tribal Members Harvest timber only at Tribal Council direction Not scheduled or included in allowable cut
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1957 99 3-plot clusters
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1966 249 3-plot clusters
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1972 289 3-plot clusters
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1974 McQuinn Strip
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1979-99 1380 plots
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1988: CFI Design Changed Single plot on a 50x50 chain grid replaced 3-plot cluster on 100x100 chain grid Subplot 1 remeasured Subplot 2 remeasured for the last time Subplot 3 dropped 1/100 acre regeneration plot added in the Pine type Conditional Use plots not remeasured
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1997: CFI Plots GPS’ed Conditional Use plots remeasured Taper heights measured 1/100 acre regeneration plot on all plots CFI not used for AAC CFI was used to calibrate both FPS and FVS growth models CFI used to compute growth & mortality
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The Stand Exam Program 1993: A need for more detailed stand-based data to implement IRMP Stand health and structure important USFS R6 Stand Exam protocol adopted Atterbury SuperStand 2 types of exams: “Formal” & “Walk-through”
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The SE Program Evolves Switch to MB&G SIS compiler and inventory database “Walk-Throughs” eliminated Data used for AAC calculation Count plots used to improve statistics
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Evolution Continues 1999: Eastern Oregon FPS library available FPS offered a more integrated compiler-growth model-harvest scheduler 2001: AAC calculated with FPS Stocking survey data used to supplement SE 2002: Prescribed fire monitoring begun
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The Wilcox Stocking Plots 1985: Need to find appropriate level of stocking for uneven-age management in PP type 4 areas selected to install 3 sets of 2.5 acre plots 3 different levels of retention All tree >1.5 inches dbh measured and stem- mapped Remeasured at 5 year intervals
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Upper Tenino Plot 3
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The Future Continue to improve accuracy and efficiency Gather data on 12,000 acres a year Use data from other programs to bolster SE Have an inventory program second to none
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