文献类型：期刊文献

英文题名：Impact of abandonment on leaf morphology traits and nutrient utilization strategies of dominant tree seedlings in Moso bamboo forests

作者：Zhang, Wei[1] Guo, Ziwu[1] Chen, Shuanglin[1] Wang, Sheping[2] Li, Yuxin[3] Fan, Lili[1]

第一作者：张威

通信作者：Fan, LL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Changshan Forestry Technol Popularizat Stn Zhejian, Changshan 324200, Peoples R China;[3]Changshan Cty Tianma Subdist Off, Changshan 324200, Peoples R China

年份：2024

卷号：52

外文期刊名：GLOBAL ECOLOGY AND CONSERVATION

收录：;Scopus(收录号：2-s2.0-85192979423);WOS:【SCI-EXPANDED(收录号:WOS:001243223200001)】；

基金：This research was funded by the Key Research and development program of Zhejiang Province (2020C02008).

语种：英文

外文关键词：Abandoned Moso bamboo; Dominant tree seedlings; Leaf morphology traits; Carbohydrates; C: N: P stoichiometry

摘要：The restoration of ecological functions in abandoned Moso bamboo forests facilitates positive succession in evergreen vegetation. Nevertheless, there is a limited understanding regarding the leaf functional traits and nutrient utilization strategies of understory vegetation after abandonment. This study investigated the impact of abandonment duration (9 and 21 years) on leaf morphological traits, soluble sugars characteristics, carbon (C), nitrogen (N), phosphorus (P), and their ratios in dominant tree seedlings (Lithocarpus brevicaudatus and Schima superba) within Moso bamboo forests. Leaf sizes increased significantly with prolonged abandonment in both species, accompanied by a consistent decrease in leaf thickness and leaf tissue density. These morphological indices were more pronounced in L. brevicaudatus compared to S. superba (P < 0.05), and they showed a positive correlation with tree sizes. Moreover, leaf soluble sugars, C, and C: N: P ratios of both tree species decreased over duration abandonment, while N and P contents increased. Specifically, L. brevicaudatus exhibited elevated levels of fructose, glucose, N, and P, whereas S. superba displayed higher sucrose, C, and C: N: P ratios. Our findings reveal that both species, with extended abandonment, enlarged their leaf area and improved carbon utilization, facilitating adaptation to competitive resource habitats. Particularly, L. brevicaudatus exhibited a propensity to augment leaf sizes, as well as N, and P contents, suggesting a strategy to enhance carbon assimilation through additional N and P nutrient supplementation. Conversely, S. superba primarily focused on bolstering carbohydrate reserves, indicating that moderate thinning or pruning of bamboo forests could boost sunlight penetration, along with the appropriate nutrient supplementation. These insights significantly contribute to the scientific understanding necessary for the classification and management of mixed stands in abandoned bamboo forests.