Western Journal of Applied Forestry最新文献_第7页

Evaluating Potential Fire Behavior in Lodgepole Pine-Dominated Forests after a Mountain Pine Beetle Epidemic in North-Central Colorado 评估科罗拉多州中北部山区松甲虫流行后Lodgepole松林的潜在火灾行为

Western Journal of Applied Forestry Pub Date : 2011-07-01 DOI: 10.1093/WJAF/26.3.101

J. Klutsch, M. Battaglia, D. R. West, S. Costello, J. Negrón

{"title":"Evaluating Potential Fire Behavior in Lodgepole Pine-Dominated Forests after a Mountain Pine Beetle Epidemic in North-Central Colorado","authors":"J. Klutsch, M. Battaglia, D. R. West, S. Costello, J. Negrón","doi":"10.1093/WJAF/26.3.101","DOIUrl":"https://doi.org/10.1093/WJAF/26.3.101","url":null,"abstract":"A mountain pine beetle outbreak in Colorado lodgepole pine forests has altered stand and fuel characteristics that affect potential fire behavior. Using the Fire and Fuels Extension to the Forest Vegetation Simulator, potential fire behavior was modeled for uninfested and mountain pine beetle-affected plots 7 years after outbreak initiation and 10 and 80% projected tree fall using measured and projected fuel and stand characteristics. Under 90th percentile weather conditions, uninfested plots exhibited proportionally more crown fire than infested plots. Plots predicted to have crown fire were composed mainly of nonhost conifer species and had a lower and more continuous canopy than infested plots. Where surface fire was predicted to occur, live lodgepole pine was the only conifer present, and plots had significantly lower tree mortality from fire than plots predicted to have crown fire. Mountain pine beetle-induced changes in stand and fuel characteristics resulted in increased intensity of surface fire behavior. Furthermore, with 80% infested tree fall, potential smoke production was predicted to be higher. Tree species composition of stands pre and postbark beetle outbreak is important when identifying mountain pine beetle-caused changes to potential fire behavior.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"26 1","pages":"101-109"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/WJAF/26.3.101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61109522","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: 71

Growth and Mortality of Residual Douglas-Fir after Regeneration Harvests under Group Selection and Two-Story Silvicultural Systems 群体选择和两层造林制度下道格拉斯冷杉更新采收后残馀生长和死亡率

Western Journal of Applied Forestry Pub Date : 2011-04-01 DOI: 10.1093/WJAF/26.2.64

S. Garber, T. Lam, D. Maguire

{"title":"Growth and Mortality of Residual Douglas-Fir after Regeneration Harvests under Group Selection and Two-Story Silvicultural Systems","authors":"S. Garber, T. Lam, D. Maguire","doi":"10.1093/WJAF/26.2.64","DOIUrl":"https://doi.org/10.1093/WJAF/26.2.64","url":null,"abstract":"Complex management objectives for many publicly owned Douglas-fir forests have prompted renewed interest in silvicultural systems other than clearcutting. The College of Forestry Integrated Research Project at Oregon State University was implemented to test for differences in economic, biological, and human responses to group selection and two-story silvicultural systems. Three separate blocks were established and treated between 1989 and 1991. Trees were measured immediately after the harvest treatments (1991 or 1992) and after the 2004 growing season. Responses of residual overstory trees to initial group selection and two-story treatments were tested relative to untreated controls units in terms of (1) gross basal area and stem volume growth of all residual trees and of the 10 largest trees per acre; (2) gross basal area and stem volume growth conditional on initial basal area and stem volume, respectively, of all residual trees and of the 10 largest trees per acre; and (3) mortality of all overstory trees. Basal area and volume growth were greatest in the control and least in the two-story treatment, but volume growth conditional on initial volume did not differ significantly among treatments. Mortality was significantly greater in the two-story treatment. Overstory growth release in residual Douglas-fir may require 10 years or more to appear after regeneration cuts on some sites, and the possibility of increased overstory mortality complicates attainment of desired long-term structure under two-story silvicultural systems.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"26 1","pages":"64-70"},"PeriodicalIF":0.0,"publicationDate":"2011-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/WJAF/26.2.64","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61109444","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: 7

Low Thinning as a Forest Restoration Tool at Redwood National Park 低间伐作为红木国家公园的森林恢复工具

Western Journal of Applied Forestry Pub Date : 2011-04-01 DOI: 10.1093/WJAF/26.2.91

J. Teraoka, Christopher R. Keyes

引用次数: 22

Reforestation of a Salvage-Logged High-Elevation Clearcut: Engelmann Spruce Seedling Response to Tree Shelters after 11 Growing Seasons 高海拔采伐后的再造林:11个生长季节后恩格尔曼云杉幼苗对树木遮蔽的响应

Western Journal of Applied Forestry Pub Date : 2011-04-01 DOI: 10.1093/WJAF/26.2.53

D. Jacobs

引用次数: 16

Thirteen-Year Height and Diameter Growth of Douglas-Fir Seedlings under Alternative Regeneration Cuts in Pacific Northwest 西北太平洋地区交替更新砍伐下道格拉斯冷杉幼苗13年高径生长研究

Western Journal of Applied Forestry Pub Date : 2011-04-01 DOI: 10.1093/WJAF/26.2.57

T. Lam, D. Maguire

引用次数: 10

Predictive Habitat Modeling of Rare Plant Species in Pacific Northwest Forests 西北太平洋森林珍稀植物预测生境模型研究

Western Journal of Applied Forestry Pub Date : 2011-04-01 DOI: 10.1093/WJAF/26.2.71

Arne Buechling, C. Tobalske

引用次数: 16

Use of Financial and Economic Analyses by Federal Forest Managers for Woody Biomass Removal 联邦森林管理者对木质生物质去除的财务和经济分析的使用

Western Journal of Applied Forestry Pub Date : 2011-01-01 DOI: 10.1093/WJAF/26.1.5

Todd A Morgan, J. Brandt, J. D. Baldridge, Dan Loeffler

引用次数: 5

Effects of Length of Storage, and Stratification on Germination of Whitebark Pine Seeds 贮藏长度和层积对白皮松种子萌发的影响

Western Journal of Applied Forestry Pub Date : 2011-01-01 DOI: 10.1093/WJAF/26.1.24

A. Bower, D. Kolotelo, S. Aitken

引用次数: 5

The Economic Value of Selling Carbon Credits from Restored Forests: A Case Study from the Navajo Nation's Tribal Forests 从恢复森林出售碳信用额的经济价值:纳瓦霍民族部落森林的案例研究

Western Journal of Applied Forestry Pub Date : 2011-01-01 DOI: 10.1093/WJAF/26.1.37

Ching-Hsun Huang, C. Sorensen

{"title":"The Economic Value of Selling Carbon Credits from Restored Forests: A Case Study from the Navajo Nation's Tribal Forests","authors":"Ching-Hsun Huang, C. Sorensen","doi":"10.1093/WJAF/26.1.37","DOIUrl":"https://doi.org/10.1093/WJAF/26.1.37","url":null,"abstract":"The goals of this study were to promote restoration of forest ecosystems through fire hazard reduction treatments and to evaluate potential economic benefits of carbon credits to the Navajo Nation. We used the historic Navajo Nation’s Continuous Forest Inventory data to calibrate the Forest Vegetation Simulator (FVS) with growth increments and used the FVS to run simulations that encompass the next 50 years. We calculated C revenues using two carbon accounting approaches: (1) reduced buffer pool under the Climate Action Reserve protocol and (2) increased C stocks based on with-and-without analysis. We investigated nine C price scenarios, including constant- and rising-price trajectories; performed discounted cash flow analyses; and calculated net present worth (NPW). When timber was the only marketable output, using a real alternative rate of return (ARR) of 4%, the NPW of target basal area (BA) 40, 70, and 100 ft 2 /ac were $144.89, $267.98, and $308.57/ac, respectively. When both timber and C were marketable outputs, with a C price of $3/ton, the NPW of target BAs of 40, 70, and 100 ft 2 /ac were increased to $119.26, $256.83, and $306.31, respectively, under the first accounting approach, and were increased to $168.62, $57.29, and $184.09, respectively, under the second accounting approach. Our results indicate that C accounting method, C price, and landowner’s ARR affect forest landowner’s profitability in participating in the C market.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"26 1","pages":"37-45"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/WJAF/26.1.37","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61109355","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: 8

Susceptibility of conifers to three dwarf mistletoes in the Klamath-Siskiyou mountains 克拉马斯-西斯基尤山区针叶树对三种矮槲寄生的易感性

Western Journal of Applied Forestry Pub Date : 2011-01-01 DOI: 10.1093/WJAF/26.1.13

R. Mathiasen

引用次数: 6