森林与环境学报2025，Vol.45Issue(2)：168-176,9.DOI:10.13324/j.cnki.jfcf.202410031
海南橡胶林植物生态化学计量特征及影响因素
Ecological stoichiometric characteristics and its influencing factors of rubber plantations in Hainan
摘要
Abstract
Exploring the carbon,nitrogen,and phosphorus contents of different plant organs and apoplastic materials in rubber forests of different stand ages and their ecological stoichiometric characteristics can provide a theoretical basis for effectively improving the biomass and productivity of rubber forest ecosystems.The present study was conducted in rubber plantations across five areas in Hainan,including Danzhou City,Wanning City,Wenchang City,Qiongzhong County,and Dongfang City,and different plant organs(trunk,tree root,branch,and blade)and litter of rubber plantations of five age segments(0-7,8-14,15-21,22-28,and 29-35 a)were analyzed.The carbon,nitrogen,and phosphorus contents and their ecochemometric ratios in different rubber plantations in Hainan of different stand ages were analyzed in a comparative manner.Results showed four main findings.(1)The carbon,nitrogen,and phosphorus contents and ecological stoichiometric ratios of plant organs and litter in rubber plantations in Hainan differed significantly;notably,the carbon-to-phosphorus ratios and nitrogen-to-phosphorus ratios of plant organs and litter in Danzhou rubber plantation area were significantly higher than those in other rubber plantation areas.(2)As the stand age increased,the organic carbon content of different organs and litter in rubber plantation increased whereas the total nitrogen content decreased,and the trend of total phosphorus content was not obvious.(3)Compared with the plant organs,the carbon-to-phosphorus ratio and nitrogen-to-phosphorus ratio in the litter were relatively high.Also,the carbon-to-nitrogen ratio in the different plant organs and the litter increased with stand age.(4)Annual average rainfall,annual average relative humidity,and altitude were the main environmental factors affecting the ecological stoichiometric ratio of rubber trees.关键词
橡胶林/植物器官/林龄/生态化学计量/影响因素/海南Key words
rubber plantations/plant organs/stand age/ecological stoichiometry/influencing factors/Hainan Province分类
林学引用本文复制引用
胡清,孙瑞,杨川,张和芬,符庆茂,吴志祥..海南橡胶林植物生态化学计量特征及影响因素[J].森林与环境学报,2025,45(2):168-176,9.基金项目
国家自然科学基金面上项目"中国橡胶林碳汇时空差异机制研究"(32371637) （32371637）
中国热带农业科学院基本科研业务费揭榜挂帅项目"热带农业(橡胶林)生态系统野外观测创新研究"(1630022022003) （橡胶林）
现代农业产业技术体系建设专项"国家天然橡胶产业技术体系橡胶园生态岗位"(CARS-33-ZP3). （CARS-33-ZP3）
