Trees, Forests and People最新文献

{"title":"Coniferous tree species classification based on DMCA-Unet network model with UAV multispectral imagery","authors":"Yushun Cai ,&nbsp;Linghan Gao ,&nbsp;Cui Jia ,&nbsp;Xiaole Liu ,&nbsp;Guanxing Wang ,&nbsp;Ying Tian","doi":"10.1016/j.tfp.2025.101026","DOIUrl":"10.1016/j.tfp.2025.101026","url":null,"abstract":"<div><div>As a critical component of global forest ecosystems, the classification of coniferous tree species facilitates precise assessment of forest resources and enhances forest As critical components of global forest ecosystems, accurate classification of coniferous tree species facilitates precise assessment of forest resources and enhances forest management efficiency, with substantial implications for ecological conservation and carbon sequestration evaluation. However, existing studies predominantly rely on high-cost, processing-intensive hyperspectral data, restricting large-scale practical applications. To address conventional methods' limitations in characterizing complex coniferous species and overcome hyperspectral dependency, this study proposes DMCA-Unet—a semantic segmentation model utilizing cost-effective unmanned aerial vehicle (UAV) Multispectral imagery. Our approach exhaustively exploits spatial-semantic- spectral features of UAV images for tree species classification in heterogeneous forests. Employing multispectral data from the Millennium Xiulin Experimental Zone (Xiongan New Area), the model adopts a VGG-16-based encoder backbone. The framework integrates deep dilated convolution modules that combine depth-wise convolutions with progressive dilation rates and LeakyReLU activations, substituting standard convolution operations to elevate training efficiency, accuracy, and convergence. Furthermore, a multi-head cross-attention mechanism captures interdependencies among heterogeneous features, strengthening classification capability in complex backgrounds. For optimized parameter learning, a combined loss function integrating cross-entropy and Dice loss resolves class imbalance issues during training. Experiments demonstrate: (1) DMCA-Unet achieves 94.45 % overall accuracy, surpassing DeepLabV3+,ViT(Vision Transformer),HRNet, PSPNet, Unet-VGG16, Unet-ResNet50, and U-Net by +4.6 %, +27.78 %, +2.7 %, +11.85 %, +2.31 %, +2.42 %, and +3.54 % respectively at lower computational cost; (2) The hybrid loss markedly enhances accuracy under sample imbalance while stabilizing training. This methodology provides technical support for forest resource monitoring and sustainable management.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101026"},"PeriodicalIF":2.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266143","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":"Floristic Diversity and Cultural Heritage of Aleppo’s Public Park: Toward Sustainable Urban Green Space Management","authors":"Abdel Aleem Bello,&nbsp;Aline Batch","doi":"10.1016/j.tfp.2025.101024","DOIUrl":"10.1016/j.tfp.2025.101024","url":null,"abstract":"<div><div>Urban public parks are not only ecological assets but also repositories of cultural memory and social identity. This study examines the floristic diversity and cultural heritage of Aleppo’s Central Public Park, a historically significant green space in one of the world’s oldest continuously inhabited cities. Through systematic field surveys and floristic analysis, 257 plant species were documented, representing 192 genera, 77 families, 43 orders, and 12 subclasses. Angiosperms accounted for 248 species, while gymnosperms comprised 9 species. The most represented families were Fabaceae (27 species), Asteraceae (26), and Poaceae (16), with dominant genera including <em>Rosa, Trifolium</em>, and <em>Amaranthus</em>, which are traditionally linked to local cultural practices. The surveyed flora was dominated by herbaceous species (164 taxa), whereas woody elements and specialized life forms were comparatively scarce. In terms of life span, perennials prevailed (149 species), followed by annuals (98 species), while biennials were rare. Notably, five native gymnosperm trees (<em>Pinus brutia, Pinus halepensis, Cedrus libani, Cupressus sempervirens</em>, and <em>Juniperus oxycedrus</em>) were identified, each bearing ecological, cultural, and historical significance within the Mediterranean landscape. Approximately 7% of the recorded flora were considered rare or underrepresented, including culturally symbolic species such as <em>Asparagus</em> spp. and <em>Canna indica</em>. The findings highlight the urgent need for integrated, culturally informed management strategies that prioritize native and traditional flora. By doing so, Aleppo’s Central Park can be revitalized as a sustainable urban green space that honors both biodiversity and the city’s civilizational legacy.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101024"},"PeriodicalIF":2.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266145","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":"Biomechanical analysis of time-developing interconnected tree systems","authors":"Xiuli Wang ,&nbsp;Wolfgang Gard ,&nbsp;Abhijith Kamath ,&nbsp;Jan-Willem van de Kuilen","doi":"10.1016/j.tfp.2025.101023","DOIUrl":"10.1016/j.tfp.2025.101023","url":null,"abstract":"<div><div>Enhancing urban tree stability is critical for public safety and infrastructure protection. This study evaluates a nature-based method for improving tree stability using inosculations to form interconnected tree systems. These systems establish biomechanical connections through inosculation, offering both biological and mechanical support. The research focused on lime trees (<em>Tilia Cordata</em> Mill.), comparing parallel and cross connected tree systems with the single tree to evaluate their mechanical performance. The mechanical performance of the interconnected tree systems was evaluated by pulling tests in different directions to simulate wind loads. The study spanned a two-year growth period to investigate the effects of growth on mechanical behavior, with the analysis supported by finite element modeling. The results showed that growth-induced changes increased the overall rigidity of the tree systems and reduced deformation, rotation, and local elongation. Cross connected trees exhibited notable bracing effects in the connected plane, which improved lateral resistance. In a parallel connected tree system, the basal stiffness increased due to the connection between the lower region. Compared to the single tree, interconnecting tree systems can provide additional support and reduce deformation caused by lateral loads, making it a promising strategy to improve tree stability under horizontal loads.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101023"},"PeriodicalIF":2.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118359","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":"Vachellia tortilis subsp. raddiana (Savi): A review on its ecology, traditional uses, pharmacological properties and conservation strategies in arid ecosystems","authors":"Brahim Alayoua,&nbsp;Khadija El Mehrach,&nbsp;Oukacha Amri,&nbsp;Hajar Sadki,&nbsp;Saida Tahrouch,&nbsp;Fadma Fahmi","doi":"10.1016/j.tfp.2025.101025","DOIUrl":"10.1016/j.tfp.2025.101025","url":null,"abstract":"<div><div>This literature review focused on <em>Vachellia tortilis</em> subsp. <em>raddiana</em> (previously classified as <em>Acacia raddiana</em>), due to its critical role in reinforcing the resilience of arid ecosystems and its beneficial implications for human health. Based on an in-depth analysis, this paper explores the species’ ecological and ethnobotanical value. It begins with a discussion of its taxonomy and distribution across major arid regions. In these environments, characterized by extremely high temperatures and water scarcity, this plant maintains ecological balance and plays a key role in traditional medicine. It contributes to nitrogen fixation, prevents erosion and interacts positively with other species. Highly adaptable to climate change, it reduces leaf size and develops deep roots. This species is now threatened by overgrazing, deforestation, and pollution. Conservation efforts focus on reducing grazing pressure, raising awareness, and promoting eco-friendly practices. <em>Vachellia tortilis</em> subsp. <em>raddiana</em> is remarkably useful for its ecological and economic importance. Different parts of the plant (leaves, wood, bark, seeds, gum) are used traditionally in construction, food, and to treat diseases such as gastric disorders, diabetes, diarrhoea, inflammation, and hypertension. Its extracts are rich in phenolic acids, isoflavones, and flavonoids, which show antimicrobial, anti-inflammatory, and antioxidant activities. These findings highlight the species’ potential for drug development. This review underscores the urgency of conserving this species and advancing research into its ecological, pharmacological potentials. By integrating traditional knowledge and science, <em>Vachellia tortilis</em> subsp. <em>raddiana</em> can contribute to biodiversity conservation, sustainable development, and human well-being.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101025"},"PeriodicalIF":2.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219860","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":"From forest to building: Enhancing the use of lower grade wood for climate-responsive construction","authors":"Paola Ovando ,&nbsp;S. Marcelo Olivera ,&nbsp;Alejandro Rodea-Chavez ,&nbsp;Lucero García-Franco ,&nbsp;Christopher L. Heard ,&nbsp;Daniel Rozas-Vásquez","doi":"10.1016/j.tfp.2025.101022","DOIUrl":"10.1016/j.tfp.2025.101022","url":null,"abstract":"<div><div>The construction sector, a major contributor to global greenhouse gas emissions, offers considerable potential for climate change mitigation through the substitution of traditional building materials with timber. While engineered wood products like cross-laminated timber and glulam have gained attention for structural applications, the use of lower-grade wood and industrial residues for durable, non-structural construction elements remain underexplored. This study evaluates the opportunities and challenges of incorporating low-grade wood into construction, specifically assessing potential climate benefits, mapping material flows along the wood value chain, and modelling carbon storage dynamics in products and by-products over a 100-year horizon, all based on secondary information sources. Using case studies from Mexico, Spain, and Chile, we analyse timber use scenarios that integrate lower-grade wood into construction materials. Results show that redirecting lower-grade wood into construction can increase carbon storage in products by 2 % to 35 %, depending on species growth rates, rotation lengths, sawmill efficiency, and timber quality. Yet, quality constraints and logistical barriers limit large-scale adoption. Unlocking this potential will require improved forest management, advanced processing technologies, and supportive regulatory frameworks. The findings demonstrate that both structural and non-structural applications can extend the lifecycle of wood and amplify its climate benefit, while regional differences in species growth, rotation lengths, and timber quality highlight the need for context-specific strategies to realise this potential.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101022"},"PeriodicalIF":2.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220584","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":"Drought stress detected in tree rings suggests an impending tipping point for forests on the Navajo Nation","authors":"Jaime O. Yazzie ,&nbsp;Margaret E.K. Evans ,&nbsp;Erin C. Riordan ,&nbsp;Christopher H. Guiterman ,&nbsp;R.Justin DeRose ,&nbsp;Alexious Becenti ,&nbsp;Frankie Thompson","doi":"10.1016/j.tfp.2025.101021","DOIUrl":"10.1016/j.tfp.2025.101021","url":null,"abstract":"<div><div>Forests across the southwestern U. S. face escalating challenges from changing climate. The objective of this study, conducted in partnership with the Navajo Forestry Department (NFD), was to assess the impact of climate variability and change on forest health on the Navajo Nation by adding tree-ring sampling to a stratified random subsample of NFD’s Continuous Forest Inventory plot network. Increment cores from 1075 trees at 56 plots were used to calculate basal area increment (BAI) and assess growth patterns at three scales - trees, forest stands, and the landscape. Tree-level regressions showed that warmer-than-average temperatures in the current year’s spring and previous year’s fall reduced growth of all three dominant tree species. At the forest stand scale, we found a multi-decade decline in productivity from 1990-present, corresponding to the period of rising temperatures. Landscape-scale analysis demonstrated reduced spatial heterogeneity of growth, hence increased synchrony. Higher-elevation forests that historically acted as climate change refugia are now being negatively affected by unusually warm spring temperatures. Declining growth and increased synchrony suggest the forest is approaching a tipping point, such that further warming and drought may exceed the limits of its resilience. We identify pathways to improve forest resilience via strategic fuel reduction treatments that simultaneously reduce the risk of high-severity fire, increase soil moisture availability for residual trees, and generate stand and landscape diversity. We emphasize the value of collaborative research approaches that have broad relevance for sustainable forest management practices, fostering resilience and protection of culturally significant services for Tribal communities.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101021"},"PeriodicalIF":2.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220583","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":"Decoding the seasonal clock of sugar maple: Timings and sequence of its phenological events","authors":"Rachana Bhandari,&nbsp;Roberto Silvestro,&nbsp;Sergio Rossi","doi":"10.1016/j.tfp.2025.101020","DOIUrl":"10.1016/j.tfp.2025.101020","url":null,"abstract":"<div><div>The seasonal sequence of physiological processes is essential to understand the strategies of carbon allocation and the dynamics of sap production in maple. We monitored the phenological events in sugar maple (<em>Acer saccharum</em> Marsh.) from 2018 to 2022 in Simoncouche (QC), Canada. We measured sap exudation, xylem water transport and radial growth using rain gauges and dendrometers installed on four adult trees. Leaf phenology was estimated with MODIS-derived Normalized Difference Vegetation Index (NDVI) in maple stands near the study site. The sugar season started in late March and ended in early May, at the onset of tension-driven water transport. The sugar season corresponded with the period of snowmelt and increase in soil water content. Budbreak and complete leaf expansion were observed one and three weeks after the ending of sap exudation, respectively, when the snow had disappeared and soil temperature started rising. Radial growth occurred two weeks after leaf expansion and ended in early August. The cessation of xylem water transport caused leaf fall in early November. Phenology advanced up to three weeks during the warm spring 2021. The synchronism between the sugar season and tension-driven water transport confirms the physiological limit for sap exudation, suggesting the importance of optimizing yield within the time window of rehydration after winter dormancy. In the context of ongoing climate warming, producers could benefit from paying more attention to the environmental and physiological signals triggering the sap season rather than relying solely on historical calendars of sap production.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101020"},"PeriodicalIF":2.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158765","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":"Mapping species distribution and estimating population abundance of dominant forest tree species in Ghana: implications for conservation prioritization","authors":"Elisha Njomaba ,&nbsp;Ben Emunah Aikins ,&nbsp;Peter Surovy","doi":"10.1016/j.tfp.2025.101019","DOIUrl":"10.1016/j.tfp.2025.101019","url":null,"abstract":"<div><div>Understanding the spatial distribution and abundance of tree species is critical for the conservation of biodiversity in Ghana’s rapidly declining forests. This study applied Species Distribution Models (SDMs) to assess habitat suitability, abundance patterns, species richness, and conservation gaps of three dominant tree species, <em>Napoleonaea leonensis, Myrianthus serratus</em>, and <em>Penianthus patulinervis</em>, within the semi-deciduous and evergreen humid forest zones of Ghana. Tree occurrence records were compiled from the Global Biodiversity Information Facility (GBIF) database and used as input data for the modeling. Environmental variables, including bioclimatic variables, land cover, topography, and soil properties, were obtained from various online platforms. Habitat suitability was modeled for all three dominant species using the MaxEnt algorithm after correlation and Variable Inflation Factor (VIF) filtering to minimize collinearity. Zero-inflated Poisson (ZIP) models were used to estimate the abundance, while species richness was derived from stack suitability and abundance predictions. MaxEnt suitability models performed strongly across species. Area under Curve (AUC) ranged 0.93–0.96 for <em>Myrianthus serratus</em> and <em>Napoleonaea leonensis.</em> Threshold-based metrics were also high (Kappa: <em>Napoleonaea leonensis</em> 0.72<em>, Myrianthus serratus</em> 0.74, <em>Penianthus patulinervis</em> 0.82; True Skill Statistics (TSS): <em>Napoleonaea leonensis</em> 0.76, <em>Myrianthus serratus</em> 0.85<em>, Penianthus patulinervis</em> 0.85). Abundance models showed good explanatory power (Pseudo-R²: <em>Napoleonaea leonensis</em> 0.283, <em>Myrianthus serratus</em> 0.475, <em>Penianthus patulinervis</em> 0.632; Akaike Information Criterion (AIC) 484.14, 335.73, and 185.87, respectively). Species richness indicated stronger values inside Protected Area (PAs) than outside (mean richness 0.102 inside vs. 0.019 outside). The composite conservation index delineated 23,536,682 ha of hotspot areas with 6,984,6670 ha (30 %) within PAs, highlighting protection gaps in unprotected forest areas. By integrating suitability, abundance, and richness, this study provides an evidence-based framework to guide prioritization and strengthen forest management activities in Ghana.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101019"},"PeriodicalIF":2.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118362","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":"Consumer awareness and willingness to pay for blockchain-based traceability systems in the forest nursery sector: lessons learnt in the Italian context","authors":"Stefano Bruzzese ,&nbsp;Simone Blanc ,&nbsp;Corrado Costa ,&nbsp;Simona Violino ,&nbsp;Andrea Rosario Proto ,&nbsp;Filippo Brun","doi":"10.1016/j.tfp.2025.101018","DOIUrl":"10.1016/j.tfp.2025.101018","url":null,"abstract":"<div><div>Blockchain technologies due to their inherent characteristics of immutability, transparency, distribution, and programmability can aid in the traceability of forest nursery chains. In this context, the present research investigates consumers' awareness and willingness to pay (WTP) a premium price (PP) for forest materials tracked with a blockchain-based traceability system. A semi-structured questionnaire was administered across selected forest nurseries nationwide between August 2021 and May 2023, collecting 259 valid responses. Three econometric ordered logit models were developed to assess three product attributes: sustainability, origin, and quality. The main findings reveal that most consumers are not aware of blockchain (62.6%), but those who are aware generally perceive them useful for traceability (71.4%). The attribute “origin” emerged as the most significant factor influencing WTP, while it is “quality” for which consumers are willing to pay more PP (28.9%). At the socio-demographic level, education was the most influential factor, followed by gender, age, and household size. The research indicates an embryonic demand for these technologies in the forest nursery sector, further analysis is required to determine whether this level of development is attributable to natural life cycle of an innovation or other constraining factors. Finally, this study highlights key elements for developing communication and marketing campaigns to foster the adoption of these new traceability systems.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 101018"},"PeriodicalIF":2.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158766","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":"Gender influences the taxanes content in different organs of European yew tree (Taxus baccata L.) in the Hyrcanian forests","authors":"Arghavan Hematzadeh ,&nbsp;Omid Esmailzadeh ,&nbsp;Hamed Yousefzadeh ,&nbsp;Mohammad Hossein Mirjalili","doi":"10.1016/j.tfp.2025.100999","DOIUrl":"10.1016/j.tfp.2025.100999","url":null,"abstract":"<div><div>European yew (<em>Taxus baccata</em> L.), the main natural source of anticancer taxanes, is an evergreen and dioecious tree native to northern Iran at the Hyrcanian ecoregion forests. In this study, variations in the level of taxanes including taxol, 10-deacetylbaccatin III (10-DAB), baccatin III, 10-deacetyltaxol (10-DAT) and cephalomannine in different organ and tissues (root, stem dead bark, stem fresh bark, wood, needle, male flowers, red aril and seed) of four couple of nearest male and female yew tree with similar diameter at breast height (DBH= 65 cm) male and female stocks of yew tree were investigated. Two-way analysis of variance and Duncan post hoc tests revealed a higher taxanes level in female organs compared to male. Suffering the greater reproductive effort in female, cause a higher taxanes content compared to male. The highest level of all taxanes was dramatically found in the roots of both male and female stocks followed by needle of female tree (except cephalomannine). Although bark possess the lowest average yields of taxanes but the highest taxol concentrations. Finally, we concluded that males and females are different in taxanes contents and females invest more taxanes. We also demonstrated significantly higher taxane contents in the roots of female yew trees and then needles and dead bark were the next highest. So dead bark and needles are proposed as a great help for alleviating the taxane supply crisis due to avoiding destructive effect of taxanes exploitation.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"22 ","pages":"Article 100999"},"PeriodicalIF":2.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118363","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}