文献类型：期刊文献

英文题名：High nutrient utilization and resorption efficiency promote bamboo expansion and invasion

作者：Zuo, Keyi[1] Fan, Lili[1] Guo, Ziwu[1] Zhang, Le[1] Duan, Yiyang[1] Zhang, Jingrun[1] Chen, Shuanglin[1] Lin, Hua[2] Hu, Ruicai[3]

第一作者：Zuo, Keyi

通信作者：Guo, ZW[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Forestry Bur Shaxian Cty, Sanming 365500, Shaxian, Peoples R China;[3]Longyou Forestry Extens Stn, Quzhou 324400, Peoples R China

年份：2024

卷号：362

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：;EI(收录号：20242316201540);Scopus(收录号：2-s2.0-85194814285);WOS:【SCI-EXPANDED(收录号:WOS:001254856600001)】；

基金：This study was funded by the National Key R & D Program of China (2021YFD2200501) , China and the National Natural Science Foundation of China (31770447) , China. We acknowledge Dr. Yanjie Li for assistance in revising our manuscript. We also thank the editor and anonymous reviewers for their contribution to the peer review of our study.

语种：英文

外文关键词：Pleioblastus amarus; Cunninghamia lanceolata; Bamboo expansion and invasion; Ecological stoichiometric characteristics; Clonal integration

摘要：Bamboos are fast-growing, aggressively-spreading, and invasive woody clonal species that often encroach upon adjacent tree plantations, forming bamboo-tree mixed plantations. However, the effects of bamboo invasion on leaf carbon (C) assimilation, and nitrogen (N) and phosphorus (P) utilization characteristics remains unclear. We selected four different stands of Pleioblastus amarus invading Chinese fir (Cunninghamia lanceolata) plantations to investigate the concentrations, stoichiometry, and allometric growth relationships of mature and withered leaves of young and old bamboos, analyzing N and P utilization and resorption patterns. The stand type, bamboo age, and their interaction affected the concentrations, stoichiometry and allometric growth patterns of leaf C, N, and P in both old and young bamboos, as well as the N and P resorption efficiency. Bamboo invasion into Chinese fir plantations decreased leaf C, N, and P concentrations, C:N and C:P ratios, N and P resorption efficiency, and allometric growth exponents among leaf C, N, and P, while it only slightly altered N:P ratios. PLS-PM analysis revealed that bamboo invasion negatively impacted leaf C, N, and P concentrations, as well as N and P utilization and resorption. The results indicate that high N and P utilization and resorption efficiency, along with the mutual sharing of C, N, and P among bamboos in interface zones, promote continuous bamboo expansion and invasion. Collectively, these findings highlight the significance of N and P utilization and resorption in bamboo expansion and invasion and provide valuable guidance for the establishment of mixed stands and the ecological management of bamboo forests.