林学期刊(英文)最新文献

{"title":"Soil CO₂ Efflux Dynamics and Its Relationship with the Environmental Variables in a Sub-Tropical Mixed Forest","authors":"Deepa Dhital, Rabina Manandhar, Puruswattam Manandhar, S. R. Maharjan","doi":"10.4236/ojf.2022.123017","DOIUrl":"https://doi.org/10.4236/ojf.2022.123017","url":null,"abstract":"","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70639824","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}

{"title":"An Assessment of the Potential Use of Forest Residues for the Production of Bio-Oils in the Urban-Rural Interface of Louisiana","authors":"Y. Twumasi, Z. H. Ning, J. Namwamba, E. Merem, A. Asare-Ansah, Harriet B. Yeboah, M. Anokye, D. B. Frimpong, P. Loh, Julia Atayi, J. Oppong, Cynthia C. Ogbu, Rechael N. D. Armah, C. Apraku, Opeyemi I. Oladigbolu, Joyce McClendon-Peralta","doi":"10.4236/ojf.2022.124027","DOIUrl":"https://doi.org/10.4236/ojf.2022.124027","url":null,"abstract":"","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70640139","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}

{"title":"Analysis of the Spatio-Temporal Dynamics of Land Use in the Bamboutos Mountains of the West Region of Cameroon","authors":"Guy Herman Tchoutezou Zanguim, Abubakar Ali Shidiki, Alphonse Loic Tcheugoue Tientcheu, M. Tchamba","doi":"10.4236/ojf.2022.122012","DOIUrl":"https://doi.org/10.4236/ojf.2022.122012","url":null,"abstract":"The current level of knowledge of the biophysical situation, human activity and governance in the Bamboutos Mountains does not shed enough light on the dynamics of the vegetation, the socio-economic aspects and ecological op-portunities that are essential for a successful restoration initiative in this degraded landscape of the Bamboutos mountain ecosystems. The objective of the study was to map and analyze the dynamics of land use from Landsat images of 1980, 2000 and 2021. Supervised classification by maximum likelihood was applied and the dynamics were analyzed using area curves and calculations. The cartographic results were used to produce land use maps. The analysis of the land cover dynamics shows that the evolutionary trend of the vegetation formations is essentially regressive for agro-forests and dense forests at −21.20% and −3.62% respectively. The classes that showed a clear progression were bare soil (9.78%), crop land (8.03%), built-up areas (5.19%) and shrubby savannahs and grassland (1.84%). Agriculture, livestock grazing and demographic pres-sure are the main causes of land degradation and mutation of the landscape. The results of this study provide an understanding of the land-use history of this landscape, and a solid basis for planning a restoration initiative. They provide guidance on priority areas and types of restoration intervention from a social, economic and ecological perspective.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70640183","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}

{"title":"Genetic Variation in Tropical Tree Species and Plantations: A Review","authors":"T. Oluwajuwon, Racheal Attafuah, C. Offiah, D. Krabel","doi":"10.4236/ojf.2022.123019","DOIUrl":"https://doi.org/10.4236/ojf.2022.123019","url":null,"abstract":"","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70639885","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}

{"title":"Diversity Analysis of Ground Cover Plant Communities of Seven Forest Parks in Guangzhou","authors":"Jun’ai Hui, Yanshan Xu","doi":"10.4236/ojf.2022.123020","DOIUrl":"https://doi.org/10.4236/ojf.2022.123020","url":null,"abstract":"Taking the ground cover plants of seven forest parks in Guangzhou as the research object, a total of 79 quadrats were set up, and the frequency of plant occurrences in the quadrats was counted. It belongs to 58 families and 90 ge-nera, including 41 species of herbs, belonging to 25 families and 39 genera; 54 species of woody plants, belonging to 34 families and 47 genera; 1 species of vines, belonging to 1 family and 1 genus; 3 species of ferns, belonging to 3 families and 3 species. The frequency of plant appearance showed that the ground cover in Guangzhou Park was dominated by herbs, with more woody plants and fewer ferns and vines. Herbaceous plants are mainly foliage plants, and there are few coleus plants; there are more coleus plants in woody plants. There are various types of ornamental plants, flexible plant collocation, and rich landscaping levels. Provide data reference for the application of ground cover plants in urban park green space landscape construction.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70639924","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}

{"title":"Anthropogenic Edges and Effective Preserve Size in the Coast Redwood (<i>Sequoia sempervirens</i> (D.Don) Endl.) Forest","authors":"W. Russell, Nanako Oba, S. Deshpande","doi":"10.4236/ojf.2022.124026","DOIUrl":"https://doi.org/10.4236/ojf.2022.124026","url":null,"abstract":"","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"192 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70640122","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}

{"title":"Perceived Injustices in Forest Policy Interventions are Causes of Forest Resources Degradation and Loss in Ghana: A Review","authors":"R. Kyere-boateng, M. Marek, M. Huba, T. Kluvankova","doi":"10.4236/OJF.2021.113012","DOIUrl":"https://doi.org/10.4236/OJF.2021.113012","url":null,"abstract":"Forests \u0000provide diverse co-benefits, including livelihoods enhancement, poverty \u0000alleviation, and biodiversity conservation and ecosystem services such as \u0000climate mitigation. Consequently, Ghana has embraced several global, regional, \u0000national, and local forest policy interventions to safeguard its forest \u0000resources’ sustainable management. However, the forest policy interventions \u0000have not adequately addressed the co-benefits issues of forest resources \u0000leading to several forest illegalities that drive forest resources degradation \u0000and loss. These forest policies and interventions on the ground primarily \u0000favour carbon stocks enhancement and sequestration activities for carbon \u0000mitigation purposes compared to the benefits, access and rights that \u0000forest-dependent people and communities are supposed to derive from forest \u0000resources. These perceived injustices in the access and distribution of forest \u0000resources have culminated into all forms of forest illegalities driving Ghana’s \u0000forest resources into massive degradation and loss. Currently, Ghana is \u0000experiencing a 2% rate of annual deforestation and forest degradation, which \u0000translates into approximately 135,000 ha/year of forest cover loss due to anthropogenic causes. Our review is based \u0000on relevant and critical forest documents, and scientific peer-reviewed papers \u0000on Ghana’s forest policy interventions and dynamics recently published. The \u0000information gathered enabled us to highlight the perceived injustices in the \u0000forest policy interventions and their effects on forest resources. Unjust \u0000forest resources sharing and distribution are critical drivers of forest \u0000resources degradation and loss. We thus offer lessons for remedying the unfair \u0000distribution and injustices to promote equitable forest resources rights and \u0000benefit access to local forest-dependent people. It is expected that this \u0000review will offer and assist forest policy, intervention spatial and other \u0000planners and designers to find a possible way forward to avoid nature \u0000degradation, including biodiversity loss, to resolve perceived injustices in \u0000the forestry sector, to use adequate all ecosystem services provided by forests \u0000as well as to promote local livelihood and sustainability.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"11 1","pages":"171-191"},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48093229","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}

{"title":"Impact of Heart Rot of Pericopsis elata (Harms) Van Meeuwen on Yield at Harvest in Production Forests in South-Eastern Cameroon","authors":"N. Din, F. Choula, René Samuel Gweth Likaa, Godswill Ntsomboh-Ntsefong, J. Betti, Françoise Manga, Nnanga M. Ruth Laure, A. Dongmo","doi":"10.4236/ojf.2021.113019","DOIUrl":"https://doi.org/10.4236/ojf.2021.113019","url":null,"abstract":"This study of the impact of heart rot of Pericopsis elata on logging yield was conducted in Libongo, in \u0000three logging concessions of the Societe \u0000d'Exploitation Forestiere et Agricole du Cameroun (SEFAC). An inventory of \u000092 P. elata stumps in four Annual Cutting \u0000Areas (AACs) divided among three Forest Management Units (FMUs) distinguished \u0000by Minimum Operating Diameter (MOD) revealed \u0000that 22 stumps were rotten. Decay was visible on stumps with a diameter \u0000of more than 100 cm with a frequency of occurrence of 23.91%, a percentage of \u0000abandonment of 55.20% and a yield of 44.79%. The most important economic loss \u0000was revealed on 9 abandoned whole logs that cumulated a volume of 145.547 m3. The correlation between the \u0000diameter of the stumps and that of the decay gives a coefficient or \u0000correlation rate r = 0.31. The MOD for P. \u0000elata could be 80 cm and covers the biological risk class. The results \u0000indicate that P. elata shows an \u0000increasing gradient of decay rate with increasing tree diameter, resulting in a \u0000loss of material for larger diameter trees, and consequently a decrease in \u0000material yield at processing.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42293770","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}

{"title":"Spatio-Temporal Dynamic of Land Use in the Dja-Odzala-Minkébé Landscape between Cameroon, Congo and Gabon: Influence on the Evolution of Forest Cover in a Context of Cross-Border Cooperation","authors":"M. Tadoum, M. Tchamba, Armand Tanougong","doi":"10.4236/ojf.2021.113015","DOIUrl":"https://doi.org/10.4236/ojf.2021.113015","url":null,"abstract":"This study is being carried out in the cross-border \u0000area of the tri-national Dja-Odzala-Minkebe (TRIDOM), subject of a cooperation \u0000agreement between Cameroon, Congo and Gabon in 2005. The purpose of this study is to \u0000analyze the dynamics of changes in land use in the context of cross-border \u0000cooperation. Geographic information systems and remote sensing were used to \u0000produce the various land use maps. For this purpose, the MERIS satellite images \u0000for the periods 1992, 2005 and 2018 were used. The exploration of the different \u0000images and the field visits made it possible to identify the following six land \u0000use classes: dense forests, degraded/deforested forests, savannas, swamp \u0000forests, buildings and bare soils, water surfaces. It emerges that the TRIDOM \u0000landscape is mainly occupied by dense forests which represent 97.02%, 96.72% \u0000and 96.52% respectively in 1992, 2005 and 2018. Then, degraded/deforested \u0000forests and savannas which would correspond to cultivation areas and fallow \u0000land only represent respectively 1.06% and 0.68% of the landscape in 1992. This \u0000proportion in 2005 is respectively 1.22% and 0.77%, whereas in 2018, it is \u0000respectively 1.36% and 0.81% of the massif. The landscape of TRIDOM has not \u0000experienced any significant land use change during the period after the signing \u0000of the cooperation agreement. Historical rates of deforestation are low during \u0000the period under study. They are estimated at 0.042% and 0.030% respectively \u0000for the period 1992-2005 and the period 2005-2018. These low rates of \u0000deforestation seem to be due to the measures taken to secure and sustainably \u0000manage the massif taken by the three countries, the low population density in \u0000this area and the still difficult level of accessibility of a large part of the \u0000massif.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44274062","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}

{"title":"Fine Roots Dynamics in Two Forest Strata of a Semi-Deciduous Forest in Northern Republic of Congo","authors":"Edgard Fleury Koula Mikieleko, Y. Bocko, Grace Jopaul Loubota-Panzou, J. Loumeto","doi":"10.4236/OJF.2021.113013","DOIUrl":"https://doi.org/10.4236/OJF.2021.113013","url":null,"abstract":"The \u0000belowground biomass is represented by coarse and fine roots. Concentrated in \u0000the superficial horizons of the soil, the fine roots play a crucial role in the \u0000functioning of a forest ecosystem. However, studies on their dynamics in \u0000natural forests are almost non-existent in the Republic of Congo. Here, we \u0000estimated the biomass, production, turnover and fine root lifespan of two \u0000forest strata of a semi-deciduous forest: the Gilbertiodendron dewevrei (De Wild.) J. Leonard forest (GF) and the mixed forest (MF) of land. The \u0000ingrowth cores method was used to estimate the biomass, production, turnover \u0000and lifespan of fine roots. The results of this study revealed that the \u0000biomass, production and fine root turnover of the two forest strata studied \u0000significantly decreased with increasing soil depth, with an increase in \u0000lifespan. The annual fine root biomass of GF (2284.50 ± 37.62  and 1034.61 ± 14.52 ) was slightly lower than that of MF \u0000(2430.07 ± 40.68  and 1043.10 ± 11.75 ) in the \u00000-15 cm and 15-30 cm horizons, respectively. The annual production of fine \u0000roots from these latter horizons was respectively 1300.19 ± 32.17  and 539.18 ± 11.55  in GF and 1362.24 ± 39.59  and 492.95 ± 14.38  in the MF. Root turnover \u0000was higher in the GF (1.68 ± 0.05  and 1.35 ± 0.03 ) \u0000than in the MF (1.57 ± 0.05  and 1.13 ± 0.02 ). \u0000The lifespan of fine roots increased with the depth of the soil. The difference \u0000in fine root dynamics observed between the forest strata studied was influenced \u0000by the Evenness index and the above-ground biomass.","PeriodicalId":63552,"journal":{"name":"林学期刊(英文)","volume":"11 1","pages":"192-205"},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49137705","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}