Trees, Forests and People最新文献_第3页

Impact of COVID-19 on visitor attitude and management strategies at Komodo National Park: Insights for enhancing park adaptive experience

IF 2.7

Trees, Forests and People Pub Date : 2025-03-04 DOI: 10.1016/j.tfp.2025.100825

Ari Rahman , Sapta Suhardono , Evi Siti Sofiyah , Imelda Masni Juniaty Sianipar , Chun-Hung Lee , I Wayan Koko Suryawan

{"title":"Impact of COVID-19 on visitor attitude and management strategies at Komodo National Park: Insights for enhancing park adaptive experience","authors":"Ari Rahman , Sapta Suhardono , Evi Siti Sofiyah , Imelda Masni Juniaty Sianipar , Chun-Hung Lee , I Wayan Koko Suryawan","doi":"10.1016/j.tfp.2025.100825","DOIUrl":"10.1016/j.tfp.2025.100825","url":null,"abstract":"<div><div>The COVID-19 pandemic significantly impacted the dynamics of visitor behavior and management strategies at national parks, particularly at Komodo National Park, situated within a critical forest ecosystem. This study deployed Structural Equation Modeling (SEM) to assess how changes induced by the pandemic affected visitor intentions to revisit the park. Key findings include the influence of perceived behavioral control and adaptive experiences on revisitation intentions. Specifically, Hypothesis 1 highlighted that visitor attitudes moderately influence social norms. Hypothesis 2 found no significant effect of perceived behavioral control on social norms. Hypothesis 3 and Hypothesis 4 demonstrated strong relationships between visitor attitudes and adaptive experiences, and between social norms and adaptive experiences, respectively. Hypothesis 5 showed that perceived behavioral control does not significantly impact adaptive experiences, while Hypothesis 6 and Hypothesis 7 revealed that both perceived behavioral control and adaptive experiences significantly influence the intention to revisit. These insights underscore the need for adaptive management strategies that enhance safety, engagement, and education, facilitating sustainable tourism and conservation in the post-pandemic landscape within the forested areas of the park. The study's recommendations aim to improve visitor experiences and park resilience, aligning with global efforts to adapt to evolving tourist expectations and environmental concerns.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"20 ","pages":"Article 100825"},"PeriodicalIF":2.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth of young Melia azedarach trees in abandoned farmlands as planting sites in western Japan

IF 2.7

Trees, Forests and People Pub Date : 2025-03-03 DOI: 10.1016/j.tfp.2025.100822

Nobuhiko Kasuya , Akihiro Sumida , Norio Ikeda , Yasushi Ueno , Hisashi Miyafuji

{"title":"Growth of young Melia azedarach trees in abandoned farmlands as planting sites in western Japan","authors":"Nobuhiko Kasuya , Akihiro Sumida , Norio Ikeda , Yasushi Ueno , Hisashi Miyafuji","doi":"10.1016/j.tfp.2025.100822","DOIUrl":"10.1016/j.tfp.2025.100822","url":null,"abstract":"<div><div><em>Melia azedarach</em> is a fast-growing broad-leaved deciduous species native to Japan, and in recent years it has been regarded as a promising silvicultural tree species. The objective of this study was to clarify the factors controlling the growth of the target species in the field. Thirty-three research sites were established in western Japan, where stem diameter at ground level (D0) and at 1.2 m in height (D) and tree height (H) were measured every year, to compare the annual growth rates of individual trees. The stand age ranged from 1 to 8 years at the end of 2021. The mortality rate of each study site in 3 years after planting was higher when the mean temperature in the coldest month, January, was low. When this temperature is below 0 °C, the rate is higher than approximately 0.3. Analysis using general linear mixed models revealed that fertilizer application and the type of planted area (abandoned farmland) positively affected the annual growth rates of D0, D and H (ΔD0, ΔD and ΔH, respectively). The presence of an animal barrier positively affected ΔD0 and ΔH. Temperature in August and precipitation between July and August had a positive and negative effect on ΔD, respectively, whereas temperature in June had positive effect on ΔH. These findings can help to promote efficient silviculture by identifying good planting sites and management plans. Abandoned farmland is considered to be a prospective planting site, compared with forest.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"20 ","pages":"Article 100822"},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing draft animal logging operations in the southeastern United States

IF 2.7

Trees, Forests and People Pub Date : 2025-03-03 DOI: 10.1016/j.tfp.2025.100824

Lucas P. Hales , Justin L. Hart , Patrick Hiesl , Matthew C. LaFevor , Ian M. Snider

引用次数: 0

Evaluation of tree diversity of native species in silvopastoral systems in the northwestern Amazon region

IF 2.7

Trees, Forests and People Pub Date : 2025-03-02 DOI: 10.1016/j.tfp.2025.100821

Manuel Oliva-Cruz, Damaris Leiva-Tafur, Lily Juarez-Contreras, Jorge Luis Maicelo Quintana, Elí Pariente, Lorenzo Culqui

{"title":"Evaluation of tree diversity of native species in silvopastoral systems in the northwestern Amazon region","authors":"Manuel Oliva-Cruz, Damaris Leiva-Tafur, Lily Juarez-Contreras, Jorge Luis Maicelo Quintana, Elí Pariente, Lorenzo Culqui","doi":"10.1016/j.tfp.2025.100821","DOIUrl":"10.1016/j.tfp.2025.100821","url":null,"abstract":"<div><div>In the Peruvian Amazon, 70 % of deforested forests are used for grazing, where inadequate management leads to overgrazing, soil compaction, and degradation. Silvopastoral systems (SPS) represent a sustainable alternative by integrating native trees with livestock production, promoting biodiversity and ecological stability. This study evaluated the diversity and ecology of native species in SPS in the Amazon region through a systematic sampling in 10 points. The importance value index (IVI), diversity (index Shannon, index Simpson, index Dominance, and Margalef´s index), and floristic similarity (Sørensen's index) were analyzed. Twenty-eight species belonging to 23 families were identified, with <em>Nectandra</em> sp. and <em>Myrsine coriacea</em> standing out for their abundance and distribution. Most individuals present diameters between 10 and 20 cm, indicating a community in its juvenile stage. In addition, <em>Myrcianthes</em> sp. and <em>Podocarpus glomeratus</em> favor phosphorus fixation, <em>Ficus</em> sp. improves potassium availability, and <em>Alnus acuminata</em> and <em>Inga adenophylla</em> contribute to soil alkalinization. These findings highlight the role of SPS in ecological resilience and biodiversity conservation, promoting their integration into sustainable livestock strategies that optimize productivity without compromising ecosystem stability.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"20 ","pages":"Article 100821"},"PeriodicalIF":2.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of aboveground biomass of savanna trees using quantitative structure models and close-range photogrammetry

IF 2.7

Trees, Forests and People Pub Date : 2025-03-01 DOI: 10.1016/j.tfp.2025.100791

Finagnon Gabin Laly, Gilbert Atindogbe, Hospice Afouda Akpo, Noël Houédougbé Fonton

{"title":"Estimation of aboveground biomass of savanna trees using quantitative structure models and close-range photogrammetry","authors":"Finagnon Gabin Laly, Gilbert Atindogbe, Hospice Afouda Akpo, Noël Houédougbé Fonton","doi":"10.1016/j.tfp.2025.100791","DOIUrl":"10.1016/j.tfp.2025.100791","url":null,"abstract":"<div><div>In efforts to mitigate climate change and optimize resource management, the demand for accurate aboveground biomass (AGB) estimates has significantly increased. Traditional AGB estimation methods rely on allometric models, which have inherent limitations. Recent advancements in remote sensing technologies present new opportunities for obtaining precise and nondestructive AGB data. This study evaluated the accuracy of AGB estimates derived from close-range photogrammetry (CRP), comparing it with destructive sampling and allometric equations. Thirty trees from five Sudanian savanna species, spanning six diameter classes, were photographed with a handheld camera. Images were processed to reconstruct 3D models of the trees, from which tree volume was calculated using quantitative structure models (QSM) and converted to AGB with species-specific wood density. Agreement between reference and estimated AGB was assessed using coefficient of variation of root mean square error (RMSE%), mean absolute bias (MAB) and concordance correlation coefficient (CCC). CRP-derived AGB closely matched with reference data (RMSE% = 23.4%, CCC = 0.98, MAB = 241 kg) and outperformed pantropical (RMSE% = 81.6%, CCC = 0.62, MAB = 694 kg) and regional (RMSE% = 74.3%, CCC = 0.70, MAB = 640 kg) allometric models. Accuracy varied by tree size, with CRP performing best for trees with DBH ≥ 30 cm. These results demonstrate CRP's effectiveness in AGB estimation for Sudanian savanna trees and its potential for timely, accurate, and scalable assessments across diverse ecosystems.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100791"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forest canopy height mapping using ICESat-2 data to aid forest management in a Canadian Arctic community: A case study of Kluane First Nation, Yukon, Canada

IF 2.7

Trees, Forests and People Pub Date : 2025-03-01 DOI: 10.1016/j.tfp.2024.100760

Ravi Darwin Sankar , Finella Pescott , Kate Hicks , Maribeth S. Murray

{"title":"Forest canopy height mapping using ICESat-2 data to aid forest management in a Canadian Arctic community: A case study of Kluane First Nation, Yukon, Canada","authors":"Ravi Darwin Sankar , Finella Pescott , Kate Hicks , Maribeth S. Murray","doi":"10.1016/j.tfp.2024.100760","DOIUrl":"10.1016/j.tfp.2024.100760","url":null,"abstract":"<div><div>As an essential indicator of a forest's growth capacity and rate, the increased accuracy, ease of access, processing and visualization of canopy height information can facilitate a targeted range of strategies for sustainable forest management, especially among citizen scientists and community members. Here, forest canopy height is estimated for several land parcel segments in a subarctic locale using ground-based measurements as well as photon and elevation data obtained from NASA's Ice, Cloud, and land Elevation satellite (ICESat-2). ICESat-2 offers a comprehensive view of vegetation structure and provides a unique opportunity to quantify forest canopy height changes, productivity and distribution in remote locations where it is often arduous and cost prohibitive to acquire ground data. Average canopy heights returned from ICESat-2 data compared with field measurements of above-ground biomass yielded a <em>R</em><sup>2</sup> of 0.53, and root mean square error of 1.45 m, amplifying the use and potential value of this dataset and novel platform for multiple user groups interested in forestry mapping and ongoing monitoring of forest canopy height with increasing frequency to facilitate community-led decision making. This study demonstrates the utility and benefit of integrating remotely sensed data and field-based survey measurements to generate complementary information related to forest structure and diversity in this region.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100760"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forests and Food: Challenges and Opportunities

IF 2.7

Trees, Forests and People Pub Date : 2025-03-01 DOI: 10.1016/j.tfp.2025.100799

Mi Sun Park , Terry C.H. Sunderland

引用次数: 0

Corrigendum to “Property estimation, landowner perspectives and timber valuation of heirs property in North Carolina” [Trees, Forests and People, Volume 18, December 2024, 100716]

IF 2.7

Trees, Forests and People Pub Date : 2025-03-01 DOI: 10.1016/j.tfp.2025.100773

Kurt W. Smith , Ryan Thomson

引用次数: 0

The balance and potometric sap flow calibration approaches that rely on transpirational pull yield inconsistent estimates of transpiration

IF 2.7

Trees, Forests and People Pub Date : 2025-02-28 DOI: 10.1016/j.tfp.2025.100820

Shuo Sun , Huiyan Gu , Xiuwei Wang

{"title":"The balance and potometric sap flow calibration approaches that rely on transpirational pull yield inconsistent estimates of transpiration","authors":"Shuo Sun , Huiyan Gu , Xiuwei Wang","doi":"10.1016/j.tfp.2025.100820","DOIUrl":"10.1016/j.tfp.2025.100820","url":null,"abstract":"<div><div>Calibrating sap flow sensors enhances the accurate estimation of whole-tree transpiration is crucial for understanding forest water use and managing water resources, however calibration approaches that rely on different directional forces to move water through tree stems (push force vs transpirational pull) can result in different calibration coefficients. It remains unclear whether coefficients differ between approaches that use the same directional force. In this study, we compared transpiration estimates obtained from the balance and potometric sap flow calibration approaches using thermal dissipation (TD) sap flow sensors deployed in the same five white birch (<em>Betula platyphylla</em>) trees. We first conducted balance calibration using five intact potted trees, followed by cutting the materials to perform potometric calibration with rootless whole plants. We found that coefficients generated from one calibration approach serve as reliable predictors of reference transpiration when applied to TD measurements obtained from the other approach. Moreover, when applied to a growing season of TD sap flow measurements, balance coefficients yielded transpiration estimates 30 % higher (<em>P</em> < 0.05) than potometric calibrations. The results indicate that the potometric calibration is effective at predicting transpiration at low flow rates; however, as the proportion of high sap flow rates increases, it tends to underestimate transpiration estimates. Future research should focus on enhancing the accuracy of potometric calibration to improve its application in TD measurement studies. This enhancement will facilitate the precise estimation of whole-tree transpiration in the context of climate change, thereby elevating the quality of research in forestry science and promoting the sustainable management of water resources.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"20 ","pages":"Article 100820"},"PeriodicalIF":2.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimating timber assortment reduction and sawlog proportions with the application of harvester measurements and open big geodata

IF 2.7

Trees, Forests and People Pub Date : 2025-02-25 DOI: 10.1016/j.tfp.2025.100811

Ville Vähä-Konka, Lauri Korhonen, Kalle Kärhä, Matti Maltamo

{"title":"Estimating timber assortment reduction and sawlog proportions with the application of harvester measurements and open big geodata","authors":"Ville Vähä-Konka, Lauri Korhonen, Kalle Kärhä, Matti Maltamo","doi":"10.1016/j.tfp.2025.100811","DOIUrl":"10.1016/j.tfp.2025.100811","url":null,"abstract":"<div><div>This study aimed to estimate timber assortment reduction and sawlog proportions by integrating in situ tree quality information and remote sensing-based forest management inventory estimates in clear-cutting areas. Using harvester data from operational forestry, we analysed sawlog recoveries from 683 stands collected throughout eastern Finland. The k-Nearest Neighbour (k-NN) method was used to estimate both timber assortments and species-specific sawlog proportions. Remote-sensing based forest attribute maps, satellite image composites and additional geodata were used as predictors. In addition, a Random Forest (RF) model was employed to predict total sawlog proportions. Absolute sawlog volumes were derived by multiplying the model-derived sawlog proportions by volumes in the Metsään.fi forest data repository. Our results showed that the root mean square error (RMSE) values associated with sawlog volumes of Norway spruce (<em>Picea abies</em> (L.) Karst.) were between 40.8–41.0 %, and were between 54.7–59.5 % for Scots pine (<em>Pinus sylvestris</em> L.). The RMSE value associated with total sawlog volume varied from 25.3 % to 27.6 %, i.e. the accuracy was considerably better when species was ignored. Our spruce-dominated dataset yielded more precise results for spruce compared to the other species. The RF model showed better performance in predicting total sawlog proportions than the k-NN approach. Integration of harvester measurements with forest databases and other sources of big geodata can provide substantially improved estimates of sawlog recoveries compared to the current state-of-the-art approach.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"20 ","pages":"Article 100811"},"PeriodicalIF":2.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0