应用生态学报2017，Vol.28Issue(10)：3135-3143,9.DOI:10.13287/j.1001-9332.201710.025
帽儿山5种林型土壤碳氮磷化学计量关系的垂直变化
Vertical variation in stoichiometric relationships of soil carbon, nitrogen and phosphorus in five forest types in the Maoershan region, Northeast China
摘要
Abstract
Five forests under diverse site conditions but under identical climate in the Maoershan region of Northeast China were sampled for measuring contents of soil carbon (C),nitrogen (N),and phosphorus (P),soil bulk density,and soil thickness by soil profile horizons.The stands included two plantations (i.e.,Pinus koraiensis and Larix gmelinii plantations) and three broadleaved forests (i.e.,Quercus mongolica stand,Populus davidiana-Betula platyphylla mixed stand,and hardwood stand).Our aim was to examine vertical distribution of the content,density,and stoichiometry of soil C,N and P for the five forest types.The results showed that the contents and densities of soil C,N and P differed significantly among the forest types,with the maxima of the soil C and N at both O-and A-horizons occurring in the hardwood stand.The contents of C and N decreased significantly with increasing soil depth in all the stands.P content decreased significantly only in the broadleaved stands,and P content had no significant difference among different soil layers in the coniferous stands.The soil C/N at the A-horizon,N/P at the O-horizon,and the C/P at A-and B-horizons were significantly different among the forest types.The soil C and N linearly correlated significantly across all the forest types without significant differences in the slopes and intercepts,and the soil N and P,or the soil C and P correlated significantly only in the broadleaved stands.This result suggested that the C-N coupling relationship tended to converge across the forest types,and the N-P and C-P relationships varied with forest types.关键词
温带森林/土壤发生层/生物地球化学Key words
temperate forest/soil horizon/biogeochemistry引用本文复制引用
张泰东,王传宽,张全智..帽儿山5种林型土壤碳氮磷化学计量关系的垂直变化[J].应用生态学报,2017,28(10):3135-3143,9.基金项目
本文由科技部“十三五”重点研发计划项目(2016YFD0600201)、教育部长江学者和创新团队发展计划项目(IRT_15R09)和东北林业大学本科生创新项目(201310225006)资助 This work was supported by the National Key Research and Development Program of the Ministry of Science and Technology of China (2016YFD0600201),the Program for Changjiang Scholars and Innovative Research Team of Ministry of Education (IRT_15R09),and the Student Innovation Training Program in Northeast Forestry University (201310225006). （2016YFD0600201）
