文献类型：期刊文献

英文题名：Stoichiometric Homeostasis of N and P in the Leaves of Different-Aged Phyllostachys edulis after Bamboo Forest Expansion in Subtropical China

作者：Shen, Jingxin[1] Fan, Shaohui[2] Zhang, Jiapeng[3] Liu, Guanglu[2]

第一作者：Shen, Jingxin

通信作者：Liu, GL[1]

机构：[1]Fujian Coll Water Conservancy & Elect Power, Sch Hydraul Engn, Yongan 366000, Peoples R China;[2]Int Ctr Bamboo & Rattan, Key Lab Bamboo & Rattan, Beijing 100102, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2024

卷号：15

期号：7

外文期刊名：FORESTS

收录：;EI(收录号：20243116776237);Scopus(收录号：2-s2.0-85199650586);WOS:【SCI-EXPANDED(收录号:WOS:001278646900001)】；

基金：This research was funded by the Fujian College of Water Conservancy and Electric Power of high-level talent research project (BLYJRC22004) and the special research fund of the International Centre for Bamboo and Rattan (1632021021, 1632023002).

语种：英文

外文关键词：moso bamboo; homeostasis; ecological stoichiometry; nutrient limiting; leaves

摘要：Stoichiometric homeostasis is an important mechanism in maintaining ecosystem structure, function, and stability. Phyllostachys edulis (moso bamboo) is a typical clone plant, forming pure bamboo forests or bamboo-wood mixed forests by expanding rhizomes around. Studying the stoichiometric homeostasis characteristics of moso bamboo at different ages after expansion contributes to a deeper understanding of the stability of bamboo forest ecosystems, and is of great significance for expanding the research scope of ecological stoichiometry. Based on the stoichiometric internal stability theory, the nitrogen (N) and phosphorus (P) elements in the soil and plants of typical moso bamboo forests in Tianbaoyan National Nature Reserve of Fujian Province were determined, and the internal stability index (H) of bamboo leaves of different ages (I-du, II-du, III-du, and IV-du bamboos) was calculated. The results showed that the dependence of moso bamboo on soil nutrients and the ability of moso bamboo to regulate nutrient elements were both significantly affected by the plant's age. Under the condition of the same soil nutrients (N, P), the content of N and P in bamboo leaves decreased significantly with the increase in bamboo age. The limiting effect of phosphorus on the growth and development of moso bamboo was greater than that of nitrogen, and the limiting effect of phosphorus on aged bamboo was greater than that of young bamboo. The stoichiometric internal stability index of N and P in bamboo leaves is H-N:P > H-N > H-P, which means that the internal stability of moso bamboo is closely related to the limiting elements. Therefore, the regulation ability of the internal stability of moso bamboo of different ages makes it grow well in the changeable environment, has stronger adaptability and competitiveness, and the leaf internal stability of I-du bamboo was higher than that of other ages, which may be one of the reasons for its successful expansion to form a stable bamboo stand structure.