应用生态学报2017，Vol.28Issue(5)：1541-1549,9.DOI:10.13287/j.1001-9332.201705.014
互花米草入侵下湿地土壤碳氮磷变化及化学计量学特征
Changes of soil carbon, nitrogen and phosphorus and stoichiometry characteristics in marsh invaded by Spartina alterniflora
摘要
Abstract
To clarify the effect of invasive alien plants on ecosystem functions,soil total carbon (TC),total carbon (TN),and total phosphorus (TP) contents were studied in the exotic invasive plant Spartina alterniflora marsh with different durations and the native species Cyperus malaccensis marsh in the Minjiang River estuary.The results showed that there were different variations of TC,TN and TP at 0-50 cm soil layer in the C.malaccensis marsh invaded by S.alterniflora,but the changes of TC and TN were similar and the change of the TP lagged behind them.Soil C/N increased continually with the increase of TC.Soil TP was a key factor affecting soil C/P and N/P during the S.alterniflora invasion,and the change of C/P and N/P followed a similar trend.The changes of TC,TN and TP were influenced by abiotic factors such as soil salinity,bulk density,soil water content and clay composition.C,N and P stoichiometric ratios were influenced mainly by soil salinity and grain composition.C/N and C/P were the good indicators for soil carbon enrichment ability in S.alterniflora marsh.S.alterniflora invasion induced the change of biomass and marsh habitats.Soil carbon,nitrogen,phosphorus contents,and their ecological stoichiometric ratios changed significantly in the C.malaccensis marsh invaded by S.alterniflora and showed different change characteristics with different invasion duration.关键词
短叶茳芏/营养元素/生态化学计量学/入侵年限Key words
Cyperus malaccensis/nutrient element/ecological stoichiometry/invasion duration引用本文复制引用
金宝石,闫鸿远,王维奇,曾从盛..互花米草入侵下湿地土壤碳氮磷变化及化学计量学特征[J].应用生态学报,2017,28(5):1541-1549,9.基金项目
本文由国家自然科学基金项目(31000262)、国家基础科学人才培养基金项目(J1210067)和福建师范大学校创新团队项目(IRTL1205)资助 This work was supported by the National Science Foundation of China (31000262),the National Basic Science Fund for Fostering Talents (J1210067),and the Program for Innovative Research Team at Fujian Normal University (IRTL1205). （31000262）
