林业科学研究 Pub Date : 2018-01-01 DOI: 10.4172/2168-9776.1000215

Z. Mohammadi, S. M. Limaei

引用次数: 4

Assessing the Role of Quality Thresholds on Early Performance of Tree Seedlings Planted on Degraded Highlands 质量阈值对退化高地树木幼苗早期生长性能的影响

林业科学研究 Pub Date : 2018-01-01 DOI: 10.4172/2168-9776.1000219

W. Gebretsadik

{"title":"Assessing the Role of Quality Thresholds on Early Performance of Tree Seedlings Planted on Degraded Highlands","authors":"W. Gebretsadik","doi":"10.4172/2168-9776.1000219","DOIUrl":"https://doi.org/10.4172/2168-9776.1000219","url":null,"abstract":"The present study highlights the effect of seedling quality on the resultant early performance of our planted tree seedlings. Four priority species tree seedlings: Cordia africana, Casuarina equisetifolia, Cupressus lusitania and Grevillia robusta were raised in the nursery using recommended substrate mixes of ratio (3% top soil: 2% manure: 1% sand). Seedlings were then sorted in to sturdiness quotient classes: quotient class one (I) comprising height to collar diameter ratio less than 6 and quotient class two (II) height to collar diameter ratio greater than 6 to compare early growth and survival among species and evaluate the significance of correlations between quotient categories and tree growth parameters on the degraded highlands of Yerer, Ethiopia. Two factor RCBD with three replications was used as an experimental design to handle eight factor combinations that resulted from four species types and two quotient classes. ANOVA indicated significant difference among tree species tested in the study area in terms of survival and early growth performances at P=0.05. Casuarina equisetifolia though its height and diameter performance in varying quotient categories was not statistically different it was found a priority species to establish plantation in the study area. The correlations between quotient categories and growth parameters were found statistically non-significant at P=0.05. Cupressus lusitanica and Grevellia robusta followed in the priority list to best adapt the site though the observed differences were not attributed to the anticipated variation in sturdiness quotient. Thus, the study results revealed that sturdiness quotient plays lower predictive role in early growth performances and survival of planted seedlings and it was found out to be a less rigorous quality parameter.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"1 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90871618","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: 1

Site Index Prediction for Willow and Cherrybark Oaks in East Texas Bottomland Forests 东德克萨斯州洼地森林柳树和樱桃栎立地指数预测

林业科学研究 Pub Date : 2017-09-24 DOI: 10.4172/2168-9776.1000210

Oswald Bp, Y. Weng, Kronrad Gd

引用次数: 0

A Comparison of Tree Growth in Loblolly Pine (Pinus taeda) Plantations and Silvopasture Settings in East Texas 美国德克萨斯州东部火炬松人工林与森林牧区树木生长的比较

林业科学研究 Pub Date : 2017-09-21 DOI: 10.4172/2168-9776.1000209

B. Oswald, Yuhui Weng, Farrish Kw, J. Grogan, W. Kruckeberg, T. Barton

{"title":"A Comparison of Tree Growth in Loblolly Pine (Pinus taeda) Plantations and Silvopasture Settings in East Texas","authors":"B. Oswald, Yuhui Weng, Farrish Kw, J. Grogan, W. Kruckeberg, T. Barton","doi":"10.4172/2168-9776.1000209","DOIUrl":"https://doi.org/10.4172/2168-9776.1000209","url":null,"abstract":"A desire by landowners to diversify potential income sources has resulted in an increased interest in silvopasture. This intensive land management option allows for the production of timber, livestock and/or forage on the same land base. With traditional plantation systems featuring loblolly pine (Pinus taeda) common in the western gulf coast region of the southeastern United States, comparisons of tree growth are needed to justify the use of silvopasture. This study evaluated the height, diameter and volume growth 13 years post-establishment of loblolly pine in both silvopasture and plantation spacings on a single site in east Texas. Individual trees in silvopasture plots had greater diameter and volume than those in plantation plots; however, plantation plots yielded greater volume per hectare. The greater volume per hectare was driven by the greater number of trees planted (1282 trees ha-1) in plantation plots than those planted (598 trees ha-1) in silvopasture. In silvopasture, site resources are concentrated on producing larger-diameter, sawtimber size, and theoretically, higher-value trees.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"3 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80973760","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: 2

Biomass estimations of invasives Yaupon, Chinese Privet and Chinese Tallow in east Texas Hardwood and Pine Ecosystems 德克萨斯东部阔叶树和松木生态系统中入侵物种黄花、女贞和牛脂的生物量估算

林业科学研究 Pub Date : 2017-09-01 DOI: 10.4172/2168-9776.1000208

Michael B. Tiller, B. Oswald, Alyx S. Frantzen, W. Conway, I. Hung

引用次数: 4

Initial Development of Surface Fuel Models for The Netherlands 荷兰地面燃料模型的初步发展

林业科学研究 Pub Date : 2017-09-01 DOI: 10.4172/2168-9776.1000207

B. Oswald, Nienke Brouwer, E. Willemsen

{"title":"Initial Development of Surface Fuel Models for The Netherlands","authors":"B. Oswald, Nienke Brouwer, E. Willemsen","doi":"10.4172/2168-9776.1000207","DOIUrl":"https://doi.org/10.4172/2168-9776.1000207","url":null,"abstract":"Estimating the spread of wildland fire is growing concern in the Netherlands, where fire events at the wildland urban interface is a growing concern with a changing climate. A multi-year project was initiated in 2012 to obtain field-based fuel measurements to be used to estimate wildland fire spread for surface fire. The overall objective was to develop either custom fuel models or utilize existing Northern American fuel models to fuel conditions in some of the hazardous vegetation in the Netherlands. Over a four-year period, 96 plots were established, a wide variety of fuel parameters measured, and ANOVA (p ≤ 0.1) and Duncan’s MRT used to place these into 56 different vegetation communities. Following multiple permutations in Behaveplus, the 56 communities were consolidated into 28 different fuel models. It was then attempted to use these fuel models as input variables in a Dutch-developed wildland fire spread model. Some fuel models produced similar fire spread, and since they were within relatively similar communities, were combined, resulting in 21 working fuel models. The results of this project will provide land managers, fire brigades and landowners more accurate wildland fire spread estimations, improving safety of the public in this densely populated country. The results of this project will contribute to more accurate and detailed calculations of the NBVM (Dutch wildfire spreadmodel). The NBVM will provide necessary information, to be able to reduce the risk on uncontrollable wildfires, via wildfire prevention measurements and during an incident, to support decision making.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"27 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84758722","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: 3

Reconstruction of Piñon-Juniper Forest Structure to Examine Historic Wildlife Habitat Characteristics in the Davis Mountains, USA 重建美国戴维斯山脉Piñon-Juniper森林结构以研究历史野生动物栖息地特征

林业科学研究 Pub Date : 2017-08-20 DOI: 10.4172/2168-9776.1000206

B. Oswald, Lanham, Bataineh Mm, Kroll Jc, Y. Zhang

{"title":"Reconstruction of Piñon-Juniper Forest Structure to Examine Historic Wildlife Habitat Characteristics in the Davis Mountains, USA","authors":"B. Oswald, Lanham, Bataineh Mm, Kroll Jc, Y. Zhang","doi":"10.4172/2168-9776.1000206","DOIUrl":"https://doi.org/10.4172/2168-9776.1000206","url":null,"abstract":"Changes in pinon-juniper (Pinus spp., Juniperusspp.) communities across the southwestern United States have often decreased ecological diversity of the understory and increases of exotic species. Reconstructing age and establishment patterns provides essential understanding to guide treatments and management for anthropogenically-altered forests. The goal of this study was to determine how patterns of pinon and juniper growth in the Davis Mountains, Texas, varied over time and how this pattern influenced wildlife habitat of several indicator species. Establishment patterns and basal area growth progression were identified, canopy cover estimates regressed from pre-developed canopy regression equations to re-construct historic forest stand structure and canopy characteristics in twenty-year intervals and applied to known wildlife habitat requirements of Montezuma quail (Cyrtonyx montezumae), black bear (Ursus americanus) and White-tailed deer/Mule deer (Odocoileus virginianus/O. hemionus). The sites provided habitat for these wildlife species, but the specific habitat provided changed over time. Prescribed burning could promote better forage for black bear while fire exclusion could improve dense cover for escape and denning cover. Montezuma quail would use thinner, less-dense habitats for forage, loafing and escape cover and the denser stand dynamics for cover and shelter. If forage habitat for Montezuma quail is required, the more open habitats found in the early 1900’s could be re-established by prescribed burning and tree removal. Habitat for White-tailed deer transitioned from more open forage, loafing, fawning cover in the early 1900’s to denser thermal, and escape cover in the later 1900’s. Mule deer habitat transitioned from a preferred open habitat to a more dense cover habitat that would be utilized primarily for bedding. Prescribed burning and tree removal to open up the current habitat would benefit Mule deer and white-tailed deer to a lesser degree.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"15 1","pages":"1-18"},"PeriodicalIF":0.0,"publicationDate":"2017-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79429610","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: 0

Response of East Texas Mid-Rotation Loblolly Pine Plantations to Poultry Litter and Chemical Fertilizer Amendments 东德克萨斯中期轮作火炬松人工林对家禽凋落物和化肥施肥的响应

林业科学研究 Pub Date : 2017-08-17 DOI: 10.4172/2168-9776.1000205

B. Oswald, Beierle Mj, K. Farrish, H. Williams, I. Hung

引用次数: 0

Impact of Erosion Process to Fertility of Mountain - Chernozem Situating in South-East Slope of Great Caucasian (On the Example of Shamakhinsky District) 侵蚀过程对大高加索东南坡山地黑钙土肥力的影响(以沙马金斯基地区为例)

林业科学研究 Pub Date : 2017-05-08 DOI: 10.4172/2168-9776.1000204

Bagirova Rf

引用次数: 0

Validation of the Ability of Selected Medicinal Plants to Control Bacterial Diseases as Applied by Local Herbalists in Kaya Tsolokero and Kaya Kauma of Kenya 肯尼亚Kaya Tsolokero和Kaya Kauma当地草药应用的精选药用植物控制细菌性疾病的能力验证

林业科学研究 Pub Date : 2017-04-19 DOI: 10.4172/2168-9776.1000200

Jolly Rajat, J. Jefwa, J. Mwafaida

{"title":"Validation of the Ability of Selected Medicinal Plants to Control Bacterial Diseases as Applied by Local Herbalists in Kaya Tsolokero and Kaya Kauma of Kenya","authors":"Jolly Rajat, J. Jefwa, J. Mwafaida","doi":"10.4172/2168-9776.1000200","DOIUrl":"https://doi.org/10.4172/2168-9776.1000200","url":null,"abstract":"An ethnobotanical study was carried out in the sacred Kaya forests of Kauma and Tsolokero of Kilifi County in Kenya. Ethnobotanical data on useful and medicinal plants was collected. Communities living around these two forests depend on the diversity of flora for their livelihood. The local herbalists use indigenous trees and shrubs to heal a variety of diseases. The communities have knowledge to prepare a variety of medicinal formulations to treat diseases which have been passed down through generations. In this study, twelve medicinal plants were selected and tested to validate their ability to control conditions caused by Escherichia coli and Staphylococcus aureus. Formulations from these twelve plants were prepared using a protocol that was adopted from the local medicinal practitioners. The formulations were used in the laboratory to inhibit the growth of S . aureusand E. coli using the dual plating method. Some of the perceived medicinal plants by the practitioners and the community exhibited medicinal properties with very clear growth inhibition zones. Mildbraedia carpinifolia (Mfundiran'gambi), Vernonia homilantha (Mlazakoma), Solanun incannun (Mtondo) and Senna siamea (Mchilifi) against S . aureuswhile, Zanthoxylum chalybeum (Mdungu) and Croton pseudophulchellum (Myama wa nyika) had activity against Escherichia coli. Results in this study validated the medicinal properties of the local formulations of some of the tested plants as applied by the local herbalists.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"66 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80470760","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: 0

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