Long-term yellow pine (ponderosa pine and Jeffrey pine) growth and yield study plots at multiple sites in northern California

This data publication contains tabular growth and yield data collected on multiple long-term yellow pine (ponderosa pine and Jeffrey pine) study plots established on 13 sites in northern California. These sites include: Adin Pass, Antelope Mountain, Blacks Mountains Experimental Forest, Edson Creek, Hog Lake, Jelly Camp, Joseph Creek, KC Reservoir, Prattville, Show plantation, Spaulding Butte, Sugar Hill, and Washington Mountain. Sites were established anywhere from 1944 to 1972, and data collected approximately every 5 years, resulting in data ranging from 1944 to 2022. Measurements consistently include tree diameter at breast height (DBH at 4.5 feet), stand age, and tree conditions. Total tree height and height to live crown were measured on a small subset of trees.
The purposes of these plots were for either predicting stand growth and yield, silvicultural treatments such as thinning and pruning, stand density management, or resilience to disturbances of yellow pine plantations and natural stands. These sites have also been used as demonstration pieces for managing forest stands.
For more information about this study and these data, see Oliver (1972), Oliver and Powers (1978), and Zhang et al. (2013). Other associated articles are listed as cross-references below.