Journal of Sustainable Forestry最新文献

{"title":"Variation in Wood Density and Mechanical Properties of Acacia mangium Provenances Planted in Vietnam","authors":"Doan Van Duong, L. Schimleck, Dong Lam Tran","doi":"10.1080/10549811.2022.2045507","DOIUrl":"https://doi.org/10.1080/10549811.2022.2045507","url":null,"abstract":"ABSTRACT There is a growing interest in improving wood properties through the appropriate selection of seed provenances within species. In this study, wood density and mechanical properties were investigated for Acacia mangium trees from six different provenances, planted in Quang Tri, Vietnam. Radial and among provenance variation in stress wave velocity (SWV), wood density (WD), dynamic modulus of elasticity (MOEd), modulus of rupture (MOR), and modulus of elasticity (MOE) were determined on a total of 480 small clear specimens (20 × 20 × 300 mm) cut from 30 trees (five per provenance). SWV and selected wood properties near the pith were significantly lower than those near the bark. Differences in all selected mechanical properties among provenances were significant. The highest static properties (MOR and MOE) were found for the Long Thanh provenance indicating its potential suitability for breeding programs in Vietnam focused on improving A. mangium wood quality. A high positive correlation coefficient was found between MOEd and MOE (r = 0.93, P < 0.001) and our results indicate that the stiffness of A. mangium can be predicted using stress wave method provided the density of measured element is known.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"518 - 532"},"PeriodicalIF":1.6,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49264593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Impact of Changes in Log Import Price from the Logging Ban on the Market Price of Timber Products","authors":"Z. Guan, Yue Zhang","doi":"10.1080/10549811.2022.2043905","DOIUrl":"https://doi.org/10.1080/10549811.2022.2043905","url":null,"abstract":"ABSTRACT China’s ban on commercial logging of natural forests coupled with increased, demand for log imports has caused the import prices of logs to fluctuate. It is important to explore the influence of the changing trend of imported log prices on the market price of wood products under the logging ban policy. Based on the data of 2013–2020, this paper uses breakpoint regression analysis to explore the market effect of import log price fluctuations under the natural forest logging ban in China. The results show that the change of log import price under the logging ban policy has led to the increase in market prices for wood products. Finally, based on the conclusion of the study, some suggestions are put forward from three aspects: broaden log import channels, adjust the management mode of resource reserves and optimize government subsidy policy.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"384 - 398"},"PeriodicalIF":1.6,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48663253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil Organic Carbon Changes in an Umbrisol under Different Silvicultural Treatments in a Temperate Forest in Northwestern Mexico","authors":"Erik Orlando Luna Robles, I. Cantú-Silva, Silvia Janeth Bejar Pulido","doi":"10.1080/10549811.2022.2043904","DOIUrl":"https://doi.org/10.1080/10549811.2022.2043904","url":null,"abstract":"ABSTRACT Soil organic carbon (SOC) is of most importance for the development of all ecosystems, specifically carbon forest stock, as it is affected by climate, tree species and forest management. The aim of this study is to determine SOC changes in an Umbrisol under forest management in a temperate forest in Mexico. Three silvicultural forest stands were analyzed (Clear cutting, Seed-trees and Selection) and compared with a Post-fire area and a Reference stand. At each stand, 4 composite soil samples were collected at two depths (0–20 and 20–40 cm) to determine SOC; the values obtained from these samples were then used as inputs for the RothC 26 model. The ANOVA indicated differences in the SOC between stands and depths. Seed-trees showed highest content of SOC (0–20 cm), with an increase of 63% with respect to Reference. At depth 20–40 cm, Clear cutting presented the highest SOC, with increase rates above 100% with respect to Reference. Differences in the SOC can be attributed to litter deposition from forest harvesting and fires. Forest management contributes to improving and increasing the capacity of Umbrisols as carbon reservoirs. The modeled scenarios for both depths showed that SOC reservoirs reach an equilibrium after 50–60 years.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"368 - 383"},"PeriodicalIF":1.6,"publicationDate":"2022-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42438550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variation in Germination Traits Inform Conservation Planning of Hawaiʻi's Foundational ʻŌhiʻa Trees","authors":"Dustin M. Wolkis, S. Walsh, C. Barnes, E. Stacy, N. Rønsted","doi":"10.1080/10549811.2021.1999272","DOIUrl":"https://doi.org/10.1080/10549811.2021.1999272","url":null,"abstract":"ABSTRACT Climate can play a critical role in seed development and germination. Linking seed germination information with environmental variables and provenance may be important in understanding plant community structure and response to climate change, which can help guide conservation planning. Native Hawaiian Metrosideros (Myrtaceae; ʻŌhiʻa) is a hyperdiverse species complex that dominates Hawaiʻi's wet and mesic forests and serves as the most bioculturally important native plant in Hawaiʻi. In response to Rapid ʻŌhiʻa Death, a major threat to native forests caused by introduced fungal pathogens, seed collections of ʻŌhiʻa across the state have increased. We used initial seed germination data from recent collections stored in the National Tropical Botanical Garden’s Seed Bank to explore if seed germinability is correlated with seed zones and environmental variables. Linear models of the proportion of seed germinated, seed zones, and environmental data revealed that only seed zones were significantly correlated with the proportion germinated. Seed germination was lower for the “Nā Pali Valleys” than the “Windward Ranges.” Generalized provisional seed zones are a helpful tool for conservation collecting and restoration planning. Germination data routinely collected for seed bank collections provide an easily accessible source of preliminary information for these purposes.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"41 1","pages":"861 - 877"},"PeriodicalIF":1.6,"publicationDate":"2022-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48769553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Indigenous Sacred Forests as a Tool for Climate Change Mitigation: Lessons from Gedeo Community, Southern Ethiopia","authors":"Y. Maru, A. Gebrekirstos, Getahun Haile","doi":"10.1080/10549811.2021.2007490","DOIUrl":"https://doi.org/10.1080/10549811.2021.2007490","url":null,"abstract":"ABSTRACT Sacred forests are patches of remnant natural forests, protected through social laws by the local communities near their villages and are always dedicated to cultural purposes. They are playing a significant role in combating climate change and informal enhancing biodiversity conservation. The aim of this study was to estimate carbon stocks of sacred forests by quantifying the aboveground biomass (AGB), and belowground (BGB) carbon of trees. The estimation of carbon stocks was conducted across the three sacred forests of Bolocho sacred forest (BSF), Ejjerissa sacred forest (ESF), and Amba sacred forest (ASF). A total of 30 plots: 10 BSF, 10 ESF, and 10 ASF were sampled and trees with DBH ≥5 cm and a height of ≥3 m was considered for biomass-carbon determination. We compared tree biomass, carbon stocks, stem densities, basal area, and importance value index of trees. Nondestructive methods of woody species biomass measurement was used by using allometric equations developed for application in tropical forests and/ or agroforestry system. A total of 4216 individuals representing 87 different species and 44 families were recorded. Statistical the highest stem density was recorded. Total biomass considered as AGB+BGB, which is highest for ASF followed by ESF and BSF (one way ANOVA, F = 98.66, df, 2, p < .001). The estimated amount of AGB across the three sacred forests were (505 Mg ha−1), (267 Mg ha−1) and (202 Mg ha−1) in ASF, ESF, and BSF, respectively. Total biomass stored, both aboveground and belowground (AGB+BGB) significantly higher for ASF (637 Mg ha−1) followed by ESF (338 Mg ha−1) and BSF (255 Mg ha−1). Total biomass carbon (C) was 318.5 Mg C ha−1 for ASF, 169 Mg C ha−1 for ESF, and 127.5 Mg C ha−1 for BSF. From the present study, it can be concluded that, sacred forests and indigenous way of forest protection has playing an enormous roles in carbon sequestration. Perhaps it could be accepted as best practices in climate change (CC) mitigation and reducing deforestation. Hence, it needs urge calls for an immediate attention for conservation, protections and documentation of indigenous knowledge.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"260 - 287"},"PeriodicalIF":1.6,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45988312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economic analysis of forestland use rights transfer and forestland welfare change","authors":"S. Ke, T. Wang, Hongxun Li","doi":"10.24294/sf.v4i2.1614","DOIUrl":"https://doi.org/10.24294/sf.v4i2.1614","url":null,"abstract":"This paper qualitatively analyzes the connotation of woodland welfare and the changes of woodland welfare that may be caused by the transfer of the right to use, and interprets the welfare improvement caused by the transfer of the right to use of woodland in the ideal state by using the relevant theories and models of microeconomics. Based on the prospect theory and psychological account theory of behavioral economics, this paper analyzes the reasons why the transfer of forestland use right has not been carried out on a large scale in China.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"53 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82758805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Is Pro-Sustainability Orientation Related to Non-timber Forest-Product Exploitation? Evidence from Communities Adjoining Onigambari Forest Reserve, Southwestern Nigeria","authors":"F. Ibrahim, B. Osikabor, O. J. Aluko, Grace Oluwatobi Ogunwale, Bolanle Tawakalitu Olatunji","doi":"10.1080/10549811.2021.2010572","DOIUrl":"https://doi.org/10.1080/10549811.2021.2010572","url":null,"abstract":"ABSTRACT In forest communities of the developing world, reconciling the need to exploit non-timber forest products (NTFPs) and the concurrent need to preserve the same is a classic hallmark of sustainable development. Hence, the influence of pro-sustainability orientation on the exploitation of NTFPs in communities adjoining a forest reserve in the tropical rain forest region of southwestern Nigeria was examined. Proportional representation influenced the process of selecting 190 respondents from eight communities. Spearman rank correlation coefficient (r) was used to analyze data. Results indicate that an overwhelming majority (83.7%) of respondents exploited firewood. Edible foods (75.8%), fodder (67.4%), medicinal plants (65.8%), small animals (62.1%) and food wrappings (66.3%) were among the NTFPs that respondents exploited the most. The exploitation of 9 of 13 NTFPs yielded an inverse relationship with pro-sustainability orientation, suggesting that these relations are sustainability-enhancing. The exploitation of 4 of 13 NTFPs yielded positively significant relations with pro-sustainability orientation, which is not in favor of sustainability. These NTFPS includes firewood, edible foods, medicinal plants, and food wrappings. The exploitation of subsistence-required-NTFPs is a huge limitation to sustainable exploitation. This populates a subsistence-exception theory of NTFP exploitation that embosses the need-for-sustenance determinism of unsustainable natural resource use.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"308 - 323"},"PeriodicalIF":1.6,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49552852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beyond the Math: Case Studies of Black Forest Landowners in Georgia, United States","authors":"Sarah Hitchner, Noah Goyke, Marc Thomas, J. Schelhas, P. Dwivedi","doi":"10.1080/10549811.2021.2010573","DOIUrl":"https://doi.org/10.1080/10549811.2021.2010573","url":null,"abstract":"ABSTRACT Economic analyses of forest management options can help landowners make informed decisions. However, landowners make decisions in complex and nuanced ways that transcend economics. The history and legal status of their land, their emotional connections to it, their access to knowledge and capital, and their broader objectives are vital elements in their decision-making processes. We present case studies of four Black landowners in Georgia through a combination of economic analyses that compare their current revenue with potential increased revenue through active forest management and qualitative interviews that provide context for past management decisions and insights into why active forest management may – or may – not prove to be their ultimate goal. Together these two types of analysis present a range of goals and management options that consider both economic and non-economic valuations of forested lands, which can inform extension and outreach strategies for increasing engagement of Black landowners in sustainable forestry.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"25 15","pages":"324 - 335"},"PeriodicalIF":1.6,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41256283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Forest dynamics in different scenarios: Selective logging in the middle Magdalena (Colombia)","authors":"Isabel C. Restrepo, Ana M. Aldana, P. Stevenson","doi":"10.24294/sf.v4i2.1613","DOIUrl":"https://doi.org/10.24294/sf.v4i2.1613","url":null,"abstract":"Selective logging is a frequently used forest use activity that has been shown to have less impact on biodiversity than clear-cutting. However, both the magnitude and direction of ecological change after logging depend on its intensity and subsequent forest dynamics. Therefore, it is important to conduct studies to understand the functioning of different ecosystems after selective logging. This study analyzed forest dynamics in the El Paujil reserve (Middle Magdalena, Colombia) in terms of demography, regeneration, clear-cutting dynamics, biomass accumulation and floristic composition by comparing two one-hectare plots in a fragment of the little disturbed (primary) forest and two one-hectare plots in a fragment of the forest that was selectively logged in the past. As expected, forest structure and biomass accumulation are altered by selective logging, but it did not have a significant impact on the other aspects mentioned, since it seems that the steep slopes of the area cause high mortality and promote the formation of clearings in both logged and lightly disturbed forests.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"138 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79610903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shifting Cultivation, Palm Oil Plantation and Indirect Deforestation: A Study on Dusun Tonggong, Parindu, West Kalimantan, Indonesia","authors":"R. Ramadhan, Faris Salman, A. Mori, O. Abdoellah","doi":"10.1080/10549811.2021.2007491","DOIUrl":"https://doi.org/10.1080/10549811.2021.2007491","url":null,"abstract":"ABSTRACT Palm oil may use land that should be used by the local people for their food needs, causing them to shift elsewhere to grow food leading to deforestation in other areas. We called the phenomenon of disappearing forest covers due to indirect land-use change as indirect deforestation. To prevent indirect deforestation in Dusun Tonggong, we need to understand the interaction between the farming system and external factors in the study area. We used geospatial analysis to obtain information about past land changes and Agent-Based Modeling (ABM) to predict possible land changes in the future. From the simulation results, if the community of Dusun Tonggong implements plantation practices by combining shifting cultivation and palm oil, the share of secondary forest disappearing in this scenario is relatively large, but it is the scenario that best accommodates conservation and economic needs. However, the total loss of the secondary forest in Dusun Tonggong due to uncontrolled indirect deforestation will lead to a lack of land to grow plants that support people’s daily needs. Therefore, an alternative solution is needed to reduce indirect deforestation in this region by changing the management system from an individual system to a communal system and an alternative by developing a palm oil agroforestry system.","PeriodicalId":54313,"journal":{"name":"Journal of Sustainable Forestry","volume":"42 1","pages":"288 - 307"},"PeriodicalIF":1.6,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44421824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}