Western Journal of Applied Forestry最新文献_第4页

Relationships between height, diameter, and crown for eastern cottonwood (populus deltoides) in a great plains riparian ecosystem 大平原河岸生态系统中东部白杨高度、直径和树冠的关系

Western Journal of Applied Forestry Pub Date : 2012-10-01 DOI: 10.5849/WJAF.11-030

T. B. Lynch, C. Budhathoki, R. Wittwer

{"title":"Relationships between height, diameter, and crown for eastern cottonwood (populus deltoides) in a great plains riparian ecosystem","authors":"T. B. Lynch, C. Budhathoki, R. Wittwer","doi":"10.5849/WJAF.11-030","DOIUrl":"https://doi.org/10.5849/WJAF.11-030","url":null,"abstract":"Models were developed for tree height and crown characteristics of eastern cottonwood (Populus deltoides Bartr. Ex. Marsh). Equations related cottonwood height to dbh and crown condition category (less than 50% live, at least 50% but less than 100% live, and 100% live). Crown width equations related crown width to dbh, crown condition category, and basal area per hectare. Additional equations related crown length to total height, basal area per hectare, and crown condition category. Data were obtained during a sample of trees located in a riparian area surrounding the Cimarron River on the Cimarron National Grassland. The band of trees on either side of the Cimarron River channel was surrounded by treeless, semiarid grassland typical of southwestern Kansas. Many trees were growing in scattered clumps or nearly open grown. In addition, there was variability in proportions of live crown present, as classified by crown condition category. These factors influence crown dimensions and are typical of cottonwood trees found in Great Plains riparian areas. Since height measurement trees were sampled on plots, mixed-effects models with random effects representing plot effects were developed for the height-diameter relationships (a model developed using ordinary least squares is also presented). Models of crown width and crown length were developed using ordinary least squares.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"27 1","pages":"176-186"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/WJAF.11-030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70979262","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

What Makes a Range of Silvicultural Alternatives Reasonable 是什么让一系列的造林选择变得合理

Western Journal of Applied Forestry Pub Date : 2012-10-01 DOI: 10.5849/WJAF.11-008

J. Long, J. Kurtzman

引用次数: 1

Variable-Density Thinning and a Marking Paradox: Comparing Prescription Protocols to Attain Stand Variability in Coast Redwood 变密度间伐和标记悖论:比较处方方案获得海岸红木林分变异性

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.11-042

K. O’Hara, Lathrop P. Leonard, Christopher R. Keyes

{"title":"Variable-Density Thinning and a Marking Paradox: Comparing Prescription Protocols to Attain Stand Variability in Coast Redwood","authors":"K. O’Hara, Lathrop P. Leonard, Christopher R. Keyes","doi":"10.5849/WJAF.11-042","DOIUrl":"https://doi.org/10.5849/WJAF.11-042","url":null,"abstract":"are often used to treat multiple stands and thereby promote multiscale homogeneity rather than heterogeneity. VDT prescriptions face the additional challenge of needing to create stand-level heterogeneity, where stand structures may already be homogeneous or where prescribing heterogeneity makes marking/thinning prescriptions very complex. When the VDT prescription or marking guidelines are unclear or confusing, forest workers may revert to marking or thinning stands in accordance with the more regular spacing to which they are accustomed. Even well-designed prescriptions can therefore be quickly undermined at the implementation phase. This represents a “paradox” for VDT, where a more complex, heterogeneous stand structure is the management objective but where simple marking/thinning rules are needed for clear and consistently accurate application. We describe six different protocols for implementing VDT in young, overly dense second-growth forests in the redwood region and assess their effectiveness and efficiency for promoting stand structure heterogeneity, and we discuss their implications for future stand development. Because of the potential importance of VDT as a restoration tool in other forest types, our objectives are broadly applicable to other regions and forest types, where VDT may be used to enhance stand structural variability.","PeriodicalId":51220,"journal":{"name":"Western Journal of Applied Forestry","volume":"27 1","pages":"143-149"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/WJAF.11-042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70979786","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: 27

Linking Forest Inventory and Analysis Ground Data to Maps: An Example for Nevada Pinyon-Juniper Forests 将森林清查和分析地面数据与地图联系起来:以内华达州矮松林为例

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.10-033

D. Chojnacky, S. Prisley, Sara R. Miller

引用次数: 2

The Wood Duck: A New Tree Falling Tool 木鸭:一种新的砍树工具

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.11-026

K. Lyons, J. Ewart

引用次数: 3

Evaluation of n-tree distance sampling for inventory of headwater riparian forests of western Oregon 俄勒冈州西部水源河岸森林n树距离抽样清查的评价

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.10-035

Zane Haxtema, H. Temesgen, Theresa Marquardt

引用次数: 15

Field Note: Growth and Survival of Port-Orford-Cedar Families on Three Sites on the South Oregon Coast 野外笔记:南俄勒冈海岸三个地点波特-奥福德-雪松家族的生长和生存

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.11-015

C. Harrington, P. Gould, R. Sniezko

引用次数: 1

Research Needs to Support Management and Conservation of Cavity-Dependent Birds and Bats on Forested Landscapes in the Pacific Northwest 研究需要支持太平洋西北地区森林景观中依赖洞穴的鸟类和蝙蝠的管理和保护

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.10-021

A. J. Kroll, M. Lacki, E. Arnett

引用次数: 24

Aggregate Roads on Private Woodlands: Does It Pay? 私人林地上的聚合道路:值得吗?

Western Journal of Applied Forestry Pub Date : 2012-07-01 DOI: 10.5849/WJAF.11-035

S. Bowers, J. Reeb

引用次数: 1

Predicting loaded on-highway travel times of trucks hauling woody raw material for improved forest biomass utilization in Oregon. 为提高俄勒冈州森林生物量利用率，预测运输木质原料的卡车在公路上的装载时间。

Western Journal of Applied Forestry Pub Date : 2012-04-01 DOI: 10.5849/WJAF.11-016

Han SangKyun, G. Murphy

引用次数: 9