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changesinfoliarnitrogenresorptionofphyllostachyseduliswithculmdevelopment
Zhang Changshun1; Liu Chunlan2; Zhang Wenyuan3; Xie Gaodi1; Fan Shaohui4; Li Na5
2019
Source Publicationjournalofforestryresearch
ISSN1007-662X
Volume30Issue:2Pages:417
AbstractLeaf nitrogen resorption is very important to Phyllostachys edulis development because the withdrawn nitrogen can help newly emerging and growing culms. However, few studies have focused on the ontogenetic changes in leaf nitrogen resorption of P. edulis. Here, we examined the variability in mature leaf nitrogen concentrations (N-m), nitrogen resorption efficiency (NRE) and proficiency (NRP or N-s) and leaf-level nitrogen use efficiency (NUE) of the current-, 3rd- and 5th-year culms in P. edulis stands under extensive management. Analyses of variance and correlation indicated that patterns of N-m, NRP, NRE and NUE were markedly affected by culm age and leaf nitrogen status. N-m, N-s and NRE were significant higher in younger (current-year) culms with 1-year lifespan leaves, while NUE was markedly higher in older (3rd- or 5th-year) culms with 2-year lifespan leaves. Significant linear correlations between N-m and NRP, NRE and NUE, N-m and NUE, N-s and NRE were found for each culm age, and N-m was significantly positively correlated to NRE for all culms pooled. Higher proficiency in older culms led to higher NUE and lower NRE, these relationships can be modulated by N-m, which in turn, is restrained by leaf N availability and acquisition. Our results revealed that at the intraspecific level, P. edulis can adjust its leaf NRE, NRP, and leaf-level NUE in concert with culm development. Understanding nitrogen resorption characteristics and NUE of P. edulis can help decision-makers design appropriate deforestation strategies and achieve precise N fertilization for sustainable bamboo forest management.
Language英语
Funding Project[Key Project of National Key Research and Development Plans] ; [Chinese National Basic Research Program] ; [Key Project for the Strategic Science Plan in Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences] ; [State Forestry Administration project 948]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/105122
Collection中国科学院地理科学与资源研究所
Affiliation1.中国科学院地理科学与资源研究所
2.Beijing Municipal Research Institute of Environmental Protection
3.江西农业大学
4.International Centre for Bamboo and Rattan
5.中国科学院大学
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Zhang Changshun,Liu Chunlan,Zhang Wenyuan,et al. changesinfoliarnitrogenresorptionofphyllostachyseduliswithculmdevelopment[J]. journalofforestryresearch,2019,30(2):417.
APA Zhang Changshun,Liu Chunlan,Zhang Wenyuan,Xie Gaodi,Fan Shaohui,&Li Na.(2019).changesinfoliarnitrogenresorptionofphyllostachyseduliswithculmdevelopment.journalofforestryresearch,30(2),417.
MLA Zhang Changshun,et al."changesinfoliarnitrogenresorptionofphyllostachyseduliswithculmdevelopment".journalofforestryresearch 30.2(2019):417.
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