国际竹藤组织

Bamboo rhizomes are abundant but underutilized underground resources in bamboo forests, and their potential for high-value applications, particularly in bent or curved components, remains largely unexplored. A major knowledge gap lies in the absence of systematic, species-level evaluations of rhizome mechanical performance and the lack of an integrative understanding of how chemical composition and microstructural traits jointly influence bending behavior. This study compared the bending properties of several common bamboo rhizomes and grouped multiple traits into chemical composition, micro-morphology, fiber characteristics, structural compactness, and cellulose crystallinity. Pearson correlation analysis and principal component analysis (PCA) were applied to identify the key determinants of bending strength and stiffness and to reveal potential coupling effects among trait categories. Clear species-level differences were observed. Lignin, hemicellulose, and density were identified as the primary determinants of mechanical behavior, while cellulose content, crystallinity, and fiber geometry contributed secondarily. These findings establish a multiscale framework linking composition, structure, and mechanical performance in bamboo rhizomes. The work provides a scientific basis for selecting rhizomes for bent components and high-value applications and supports their industrial classification and efficient utilization.

The mechanical performance of bamboo is largely determined by the properties of its fiber cell walls, which develop progressively during culm maturation. Conventional maturity assessments based on age or visual inspection are often unreliable for small-diameter species, where external indicators are indistinct. In this study, an anatomical grading method was applied to evaluate the maturity of Bambusa multiplex culms, and fiber cell wall properties were examined across different maturity types. Culms were categorized into three maturity classes according to fiber wall thickness and lumen size. A combination of atomic force microscopy (AFM), X-ray diffraction (XRD), Raman spectroscopy, and nanoindentation was used to characterize cell wall ultrastructure, chemical composition, and micromechanics. The results showed that mature culms contained fibers with thickened secondary walls (S), lower microfibril angle (MFA), and higher cellulose crystallinity. Nanoindentation confirmed significantly greater modulus of elasticity and hardness in mature fibers compared with immature ones. Raman spectra further indicated increased deposition of lignin and hemicellulose and a relative decrease in cellulose concentration with increasing maturity. These findings demonstrate that anatomical maturity grading provides a reliable and practical approach to assess developmental status in small-diameter bamboo. Linking anatomical features to structural and mechanical properties offers a scientific basis for the selective utilization of small-diameter bamboo in fiber-based products and sustainable material applications.

Bamboo scrimber, as a sustainable engineered composite material, faces challenges in interfacial adhesion and mildew resistance due to the hydrophobic surface of bamboo bark/inner skin and its nutrient-rich composition (e.g., starch and other saccharides). Atmospheric plasma, through high-energy particles, can activate the bamboo surface by grafting oxygen-containing functional groups and inducing micro-roughness. This study proposes a novel strategy combining atmospheric plasma treatment with in situ zinc oxide nanoparticle deposition to simultaneously enhance interfacial bonding and anti-mold performance. The plasma-driven pyrolysis of zinc acetate precursor generates zinc oxide nanoparticles in situ, imparting mildew resistance to the material. Concurrently, this modification promotes deep penetration and uniform spreading of phenolic resin, forming a continuous bonding layer and mechanically interlocked "glue nail" structure at the bamboo-resin interface. The optimized composite exhibited a 13.7

Conserving genetic diversity is crucial for effective germplasm use and crop improvement. Developing core collections with minimal redundancy and maximum diversity requires a clear understanding of population structure. However, the nationwide population structure of moso bamboo (Phyllostachys edulis) remains poorly characterized, creating a major gap for developing representative, non-redundant core collections. Using whole-genome resequencing data from 432 moso bamboo accessions covering a broad geographic range across the distribution of the species in China, we investigated the population genetic structure and diversity patterns. Principal component analysis and phylogenetic tree analyses identified three distinct genetic clusters together with a hybrid group. To identify the optimal strategy for core collection development, we evaluated two stratification schemes, seven sampling strategies, and five sampling intensities. Across 70 candidate cores, stratified sampling combined with expected heterozygosity optimization at 20

Ecuador is considered one of the South American countries with abundant bamboo resources due to its diversity and abundance. This species, considered a non-timber resource, contributes to multiple SDGs because of its environmental potential and provision of sustainable livelihoods. This study uses a life cycle assessment methodology to evaluate the social and ecological impacts of preserved bamboo in two key production regions in Ecuador. The findings show that bamboo conserved in various by-products and processing forms emits less than 0.5 kg of CO2-Eq, with chemical inputs and transportation distances accounting for most of the environmental impacts. The assessment of the social implications of the actors in the bamboo chain is above average, translating into a “fair” evaluation, which tends to be more positive than negative. Thus, bamboo is seen as a source of livelihood for rural inhabitants, but it faces challenges such as poor agricultural incomes, informal employment, and limited access to basic services. Despite these obstacles, institutional support and the rise in the market for bamboo-based products provide opportunities to improve rural development, create green jobs, and strengthen climate resilience. These findings offer valuable insights for policymakers and industry stakeholders to enhance the role of bamboo in rural development.