Forest ecosystems play an important role in the global carbon cycle. Therefore, understanding the dynamics of carbon uptake in forest ecosystems is much needed. Pinus cooperi is a widely distributed species in the Sierra Madre Occidental in northern Mexico and future climatic variations could impact these ecosystems. Here, we analyze the variations of trunk carbon in two populations of P. coope...

The northern treeline is generally limited by available warmth. However, in recent years, more and more studies have identified drought stress as an additional limiting factor for tree growth in northern boreal forests and at treelines. Three growth responses to warming have been identified: increase in growth, decrease in growth, and nonsignificant correlation of tree growth with climate. Here...

Three-dimensional (3-D) visualizations of forest landscapes are quantitative ecological information-based techniques that can be used to visualize forest structure, dynamics, landscape transformations and regional plans. Visualizing forests and landscapes with limited ground observations are often the primary challenge for quality animations. Conducting stand-level field surveys over a large fo...

collection of appropriate qualitative and quantitative data is necessary for proper management and planning. used the suitable inventory methods is necessary and accuracy of sampling methods dependent the inventory net and number of sample point. nearest neighbor sampling method is a one of distance methods and calculated by three equations (byth and riple, 1980; cotam and curtis, 1956 and cota...

Tropical agro-forest landscapes are global priority areas for biodiversity conservation. Little is known about the ability of these landscapes to sustain large late successional forest trees upon which much forest biodiversity depends. These landscapes are subject to fragmentation and additional habitat degradation which may limit tree recruitment and thus compromise numerous ecosystem services...

To evaluate the capability of SPOT5 HRG data for monitoring the pollarding forest areas in northern Zagros, some parts of pollarded forests located at Baneh city were selected. The Pollarding area was determined as ground truth in a 3-year alternation period using a Global Positioning System (GPS). Radiometric and geometric correction, were applied to the image and then the data was pre-process...

this study was performed in order to investigate the changes in vegetation and soil properties in compartment no.317 (managed forest) and no.318 (control forest) of jamand district of golband forest in mazandaran (noshahr). for this purpose, random-systematic sampling method with regular grid of 100×200 m was used to locate samples. the plot size was 400 m2 considering to tree and shrub species...