Treesearch

Models project that climate change is increasing the frequency of severe storm events such as hurricanes. Hurricanes are an important driver of ecosystem structure and function in tropical coastal and island regions and thus impact tropical forest carbon (C) cycling. We used the DayCent model to explore the effects of increased hurricane frequency on humid tropical forest C stocks and fluxes at decadal and centennial timescales. The model was parameterized with empirical data from the Luquillo Experimental Forest (LEF), Puerto Rico. The DayCent model replicated the well-documented cyclical...

Enhancing the performance of polypropylene (PP)/high-density polyethylene (HDPE) blends is crucial for valorizing mixed plastic waste. This study incorporated microcrystalline cellulose (MCC), combined with maleic anhydride grafted polyethylene (MAPE), into a PP/HDPE blend to enhance its performance. Mechanical results showed that the addition of MCC increased strength, stiffness, and toughness of the PP/HDPE blend, with further enhancement achieved through adding MAPE. Morphological observations and thermal analyses revealed that the enhanced mechanical properties were attributed to the...

Understanding the correlation between morphology and the fundamental behavior of blends is crucial for tailoring their properties. This study investigated the effects of phase morphology on mechanical performance, rheology, and non-isothermal crystallization kinetics of immiscible polypropylene (PP)/high-density polyethylene (HDPE) blends. Nanometer-scale HDPE phases dispersed within PP, co-continuous phases, and micrometer-scale PP phases dispersed within HDPE were formed at 75/25, 50/50, and 25/75 PP/HDPE weight ratios, respectively. Mechanical results indicated that the co-continuous...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in Pennsylvania. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in Rhode Island. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in Vermont. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite board...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in South Dakota. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in Minnesota. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite board...

This resource update contains the findings of a survey conducted on a sample of all primary wood-using mills in Missouri. It complements the Forest Inventory and Analysis (FIA) annual inventory of volume and removals. The survey was conducted to determine the amount and source of wood receipts and annual timber product imports/exports. Only primary wood-using mills were surveyed. Primary mills are those that process roundwood in log or bolt form or as chipped roundwood. Examples of industrial roundwood products are saw logs, pulpwood, veneer logs, poles, and logs used for composite board...