Western Journal of Applied Forestry最新文献_第6页

Sitka Spruce and Western Hemlock Stand and Tree Growth 10 Years after Precommercial Thinning in Southeast Alaska 阿拉斯加东南部商业性间伐10年后的锡特卡云杉和西铁杉林和树木生长情况

Western Journal of Applied Forestry Pub Date : 2012-01-01 DOI: 10.1093/WJAF/27.1.5

M. Newton, Liz Cole

引用次数: 6

Financial Feasibility of a Log Sort Yard Handling Small-Diameter Logs: A Preliminary Study 处理小直径原木的原木分拣场的财务可行性:初步研究

Western Journal of Applied Forestry Pub Date : 2011-10-01 DOI: 10.1093/WJAF/26.4.174

Han-Sup Han, E. Bilek, J. Dramm, Dan Loeffler, D. Calkin

{"title":"Financial Feasibility of a Log Sort Yard Handling Small-Diameter Logs: A Preliminary Study","authors":"Han-Sup Han, E. Bilek, J. Dramm, Dan Loeffler, D. Calkin","doi":"10.1093/WJAF/26.4.174","DOIUrl":"https://doi.org/10.1093/WJAF/26.4.174","url":null,"abstract":"The value and use of the trees removed in fuel reduction thinning and restoration treatments could be enhanced if the wood were effectively evaluated and sorted for quality and highest value before delivery to the next manufacturing destination. This article summarizes a preliminary financial feasibility analysis of a log sort yard that would serve as a log market to buy and sell small-diameter logs in western Montana. We based our evaluations on equipment for a medium-sized log sort yard that would preprocess and sort 33 million board feet of small-diameter logs per year to seven different products. The delivered log input costs represent 78.1% of the total sales revenue, whereas the yard’s operating costs account for 17.7% of the revenue. The log sort yard’s operating cost would be $3.74/piece or $79.53/thousand board feet. Douglas-fir (Pseudotsuga menziesii) would make the biggest contribution to the yard’s gross margin because this species both represents the largest volume (45% of the input log volume) into the yard and produces high-value products (house and veneer logs). Improved knowledge regarding wood market conditions and local log supplies is a prerequisite to understanding a log sort yard’s financial feasibility.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"26 1","pages":"174-182"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/WJAF/26.4.174","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61109201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Using Airborne Light Detection and Ranging as a Sampling Tool for Estimating Forest Biomass Resources in the Upper Tanana Valley of Interior Alaska 利用机载光探测和测距作为采样工具估算阿拉斯加内陆上塔纳纳山谷森林生物量资源

Western Journal of Applied Forestry Pub Date : 2011-10-01 DOI: 10.1093/WJAF/26.4.157

H. Andersen, Jacob L. Strunk, H. Temesgen

引用次数: 62

Evaluating Global Positioning System Accuracy for Forest Biomass Transportation Tracking within Varying Forest Canopy 评估全球定位系统在不同林冠下森林生物量运输跟踪的精度

Western Journal of Applied Forestry Pub Date : 2011-10-01 DOI: 10.1093/WJAF/26.4.165

Matamyo Simwanda, M. Wing, J. Sessions

引用次数: 15

ACCEL: Spreadsheet-Based Cost Estimation for Forest Road Construction 基于电子表格的森林道路建设成本估算

Western Journal of Applied Forestry Pub Date : 2011-10-01 DOI: 10.1093/WJAF/26.4.189

J. C. Bruce, Han-Sup Han, A. Akay, W. Chung

引用次数: 7

Landowner Perceptions of Habitat Protection Policy and Process in Oregon 俄勒冈州土地所有者对栖息地保护政策和过程的看法

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.110

P. Giampaoli, J. Bliss

引用次数: 8

Foliar Sulfate-Sulfur as a Nutrient Diagnostic Tool for Interior Douglas-Fir 道格拉斯冷杉叶片硫酸盐-硫作为内部养分诊断工具

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.147

H. Schmalz, M. Coleman

引用次数: 3

Wildland Fire Science for Management: Federal Fire Manager Information Needs, Sources, and Uses 野火科学管理:联邦消防经理信息需求、来源和使用

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.126

C. Ryan, L. Cerveny

引用次数: 7

A Modeling Approach to Estimating Skidding Costs of Individual Trees for Thinning Operations 估算单株树木在间伐操作中滑动成本的建模方法

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.133

M. Contreras, W. Chung

{"title":"A Modeling Approach to Estimating Skidding Costs of Individual Trees for Thinning Operations","authors":"M. Contreras, W. Chung","doi":"10.1093/WJAF/26.3.133","DOIUrl":"https://doi.org/10.1093/WJAF/26.3.133","url":null,"abstract":"Thinning is a common silvicultural treatment used for different forest management purposes. Traditionally, thinning prescriptions are derived from sample plots and applied to stands with various vegetation conditions. A few studies have optimized cut-tree selection to create site-specific thinning prescriptions. However, these studies greatly simplify the estimation of harvesting costs by ignoring the location of the cut trees relative to the extraction point. Consequently, resulting tree-level thinning prescriptions might not provide the most economically efficient selection of cut trees. In this study, we developed a model to estimate skidding costs of individual cut trees based on size, location, and spatial distribution of selected cut trees. The model uses a log-bunching algorithm to identify log-pile locations and then creates a skid-trail network that connects log piles to the exit point at a minimum skidding cost. We applied the model to a treatment unit, where light detection and ranging data were used to obtain terrain and tree data, considering two thinning scenarios with target densities of 400 and 300 leave trees/ha, respectively. Comparison of the model results with those obtained from the existing cost models indicates that our model results are within a reasonable range for skidding costs. As our model considers terrain slope to create skid trails, it can be effectively used to delineate nonaccessible or difficult terrain areas for skidding operations. The model can also be used to automatically generate optimal skid-trail networks connecting multiple log piles to the exit point.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"26 1","pages":"133-146"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/WJAF/26.3.133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61109121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

An Examination of Five Identical Mapping-Grade Global Positioning System Receivers in Two Forest Settings 两种森林环境下五种相同测绘级全球定位系统接收机的检验

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.119

M. Wing, Jereme M. Frank

引用次数: 7