Stand growth-and-yield models include whole-stand models, individual-tree models, and diameter distribution models. Based on the growth data of Chinese fir (Cunninghamia lanceolata [Lamb.] Hook.) in Fenyi County, Jiangxi Province, in southern China, Bayesian model averaging (BMA) was used to forecast stand basal areas by combining these three types of models into a single predictive model. BMA ...

In the northern hardwood region of North America managing for late-successional forest habitats and functions is an important element of ecosystem management. This study tests the hypothesis that uneven-aged practices can be modified to accelerate rates of late-successional forest development. An approach, termed ‘‘structural complexity enhancement’’ (SCE), is compared against conventional unev...

Most models of the potential effects of climate change on forest growth have produced deterministic predictions. However, there are large uncertainties in data on regional forest condition, estimates of future climate, and quantitative relationships between environmental conditions and forest growth rate. We constructed a new model to analyze these uncertainties along with available experimenta...

In order to evaluate the possible correlation between the tree density and the human population density, the forested area in Nav Asalem district located in Guilan Province was selected. The descriptors of tree number and basal area per hectare as well as the stand density index were used to determine the tree density, which was conducted from a 2014 forest inventory including 62 cluster (558 p...

Large areas of forests in the Pacific Northwest are being transformed to younger forests, yet little is known about the impact this may have on hydrological cycles. Previous work suggests that old trees use less water per unit leaf area or sapwood area than young mature trees of the same species in similar environments. Do old forests, therefore, use less water than young mature forests in simi...

Future climate predictions for the Mediterranean area include prolonged droughts and an increase in frequency of extreme events. Silvicultural modification stand density can buffer response tree growth to changes by enhancing soil water availability. We analyzed stem dynamics Pinus halepensis, including days year when 25%, 50% 75% intra-annual basal was achieved, considering two different socia...

Mod& were developed for individual-tree basal area growth, survival, and total heights for different species of upland hardwoods in the Boston Mountains of north Arkansas. Data used were from 87 permanentplots located in an array of different sites and stand ages; the plots were thinned to different stocking levels and included unthinned controls. To test these three tree models, stand developm...

Three equations predicting height H=β1(t-0.5) , diameter D = β2(H-1.3)/lnN, and mortality dN/N= 2(G/ Gmax) 3 dD/D from plantation age (t), stocking (N) and basal area (G) can be calibrated with few data (even a single observation) for plantations in which re-measured data and growth models are unavailable. Despite having only three parameters to be estimated, these equations extrapolate reliabl...