Moving From Status to Trends: Forest Inventory and Analysis (FIA) Symposium
Increment cores collected as part of the periodic inventory in the Intermountain West were examined for their potential to represent growth and be a proxy for climate (precipitation) over a large region (Utah). Standardized and crossdated time-series created from pinyon pine (n=249) and Douglas-fir (n=274) increment cores displayed spatiotemporal patterns in growth differences both between species and by region within Utah. However, the between-species interrelationship of growth was strong over much of the state and indicated both species respond similarly to climate variations. Indeed, pinyon pine and Douglas-fir exhibited a significant and spatially coherent response to instrumental precipitation data. Previous water year (5-month lag) exhibited the strongest relationship to tree-ring increment for both species. Results suggest increment cores collected by Forest Inventory and Analysis are excellent proxies for historical precipitation.
DeRose, R. Justin; Wang, Shih-Yu (Simon); and Shaw, John D., "Investigating Forest Inventory and Analysis-Collected Tree-Ring Data from Utah as a Proxy for Historical Climate" (2012). Wasatch Dendroclimatology Research. Paper 6.