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- Title
不同种植年限中间锦鸡儿叶片功能性状的 差异性研究.
- Authors
李 琴; 王 磊; 张 雪; 潘昱伶; 王 玥; 余 殿
- Abstract
[Objective] To compare the differences in leaf functional traits of Caragana intermedia plantations with different planting years for and provide a scientific basis for studying the adaptation mechanism of C. intermedia in response to environmental changes in the arid area. [Method] Based on the plantations with four different planting years (16, 25, 34, and 46a), we analyzed the leaf functional traits in C. intermedia. [Result] There were significant differences in the morphological and functional traits of leaves of C. intermedia planted in different years. The LDMC of C. intermedia with 46 years of age was significantly higher than those have ages of 16, 25, and 34 a (P<0.05), and the SLA was significantly higher than that with ages of 16 and 34 a (P<0.05). LL, LW, LFW, LDW, and LA all increased first and then decreased, which showed a growth trend of 25 a>34 a>16 a>46 a. The coefficient of variation of leaf morphology and function traits of C. intermedia was 7.57%~ 46.98%, among which the coefficient of variation of LFW, LDW, LA and SLA of 16-year-old C. intermedia was the highest. Among the structural and functional traits of leaves, the VB and USA of C. intermedia with 46-year-old were significantly lower than those in with 34- year-old (P<0.05), and there was no significant difference between 16-year-old and 25-year-old. The stomatal density of the epidermis varied greatly. UEH and LEH showed a very significant positive correlation (P<0.01), and the rest of the functional traits were relatively stable. [Conclusion] Four plantations of C. intermedia have formed a transition from the rapid biomass production to the effective nutrient preservation strategy with the increase of age, which results in the mutual regulation and trade-off for adapting to the environmental deprivation in the arid zones.
- Subjects
ARID regions; LEAF morphology; BIOMASS production; PLANTATIONS; STOMATA; EPIDERMIS; LEAF physiology
- Publication
Forest Research, 2023, Vol 36, Issue 4, p173
- ISSN
1001-1498
- Publication type
Article
- DOI
10.12403/j.1001-1498.20230082