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...

Leaf area index (LAI), needlefall (NF), and forest floor (FF) dynamics are tightly linked with stand productivity, nutrient cycling, and carbon, water, and energy exchange. We analyzed a long-term data set to quantify the impacts of stand development, site quality, and silviculture on LAI and litterfall (LF) in loblolly and slash pine plantations. LAI was significantly correlated with stand den...

Growth andmortality of coast Douglas-fir (Pseudotsugamenziesii var.menziesii) were studied for 25 years after planting seedlings at 1–6-m spacings on a site of moderate quality in the western Cascade Mountains of Washington. Responses were compared to those from two other studies representing high and low site qualities. Third-year height did not differ among spacings (P = 0.80), providing no e...

A model was developed to predict the value con­ tribution of forest condition on small urban-wildland inter­ face properties. Sample data were collected on property transactions in the Lake Tahoe Basin of California between 1990 and 1994. A variant of the stand density index (SDI) and a tree health measure were added to a list of traditional property characteristics (i.e., location, house size,...

Abstract Drought effects on tree growth and mortality are widely studied, but scant knowledge exists its impact stand density, size variation, or mixing proportions. Grasping drought's influence structural compositional diversity is crucial for dynamics, ecosystem services, silvicultural adaptation. We relied KROOF, a 5-year throughfall exclusion experiment in mature Norway spruce ( Picea abies...

The membrane fouling index, widely used in the reverse osmosis (RO) membrane industry, is developed mainly to assess the fouling potential of particulate matter. However, the fouling potential by organic matter should also be accurately evaluated as the productivity loss by organic fouling is often more severe than particle fouling, despite its low concentration in feed water. This study was pe...

Growth and yield data from a loblolly pine plantation in southeastern Louisiana were obtained yearly from 1993 to 1996 on numbered trees within two stands initially planted on a by spacing, and two stands planted on a by spacing. Using allometric equations derived from a 1994 on-site destructive harvest, cited nitrogen concentrations of various tree tissues, and accounting for foliar nitrogen r...

In the past, dry mixed conifer forests of California’s Sierra Nevada mountains experienced frequent low to severity fires. However, due fire suppression and past management, forest structure has changed, new regimes are characterized by large, high fires which kill a majority overstory trees. These disturbance patterns require novel approaches regenerate as they not adapted We forecasted growth...

BACKGROUND It is known that bone mineral density (BMD) predicts the fracture's risk only partially and the severity and number of vertebral fractures are predictive of subsequent osteoporotic fractures (OF). Spinal deformity index (SDI) integrates the severity and number of morphometric vertebral fractures. Nowadays, there is interest in developing algorithms that use traditional statistics for...