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The relationship between bamboo shoot quality and soil nutrients in severely degraded Phyllostachys violascens forests with mulching
FAN Lili, LI Yuxin, CHEN Shuanglin, WANG Sheping, ZHANG Jingrun, GUO Ziwu
Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2026, Vol. 50 ›› Issue (1) : 188-195.
PDF(4909 KB)
PDF(4909 KB)
The relationship between bamboo shoot quality and soil nutrients in severely degraded Phyllostachys violascens forests with mulching
【Objective】 Forest degradation leads to adverse changes in soil characteristics in mulched Phyllostachys violascens forests, negatively impacting bamboo shoot quality. This study aims to investigate the key soil nutrients affecting bamboo shoot quality in degraded P. violascens forests, providing scientific insights for the restoration and sustainable management of these forests. 【Method】The research examined severely degraded P. violascens and normal bamboo forests, comparing differences in bamboo shoot appearance, nutritional quality, and taste quality. Additionally, the study analyzed the constraining relationship between these qualities and soil nutrients. 【Result】After forest degradation, the soil pH significantly decreased by 65.42% compared to the normal bamboo forest (P<0.05). However, the total and available nutrient content significantly increased (P < 0.05). In degraded forests, the fresh weight, base diameter, and edibility rate of bamboo shoots was decreased compared to those in normal bamboo forests. However, the height-diameter ratio and shoot sheath color factors increases. Notably, shoot sheath color significantly responded to forest degradation (P<0.05). Protein, fat, starch, and vitamin C contents of bamboo shoots in degraded bamboo forests significantly decreased compared to those in normal bamboo forests (P<0.05), while the lignin and cellulose contents significantly increased (P< 0.05). In degraded forests, the total acid, oxalic acid, and tannin contents of bamboo shoots significantly increased compared to normal bamboo forests (P<0.05), whereas the soluble sugar and sugar-acid ratio significantly decreased (P<0.05). There were no significant differences in the amino acid composition and proportion between both forest types. Correlation and principal component analysis indicate that soil pH significantly influenced the nutritional quality and formation of sugar-acid taste compounds in bamboo shoots, while nitrogen and phosphorus were crucial for influencing color, roughness, and the formation of acidic and astringent taste compounds in bamboo shoots. 【Conclusion】The severe degradation of P. violascens forests significantly deteriorates bamboo shoot appearance, nutritional quality, and palatability. This deterioration is closely associated with decreased soil pH and increased nitrogen and phosphorus nutrients.
bamboo forest degradation / Phyllostachys violascens / bamboo shoots / nutritional quality / flavor compounds / soil nutrients
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