生态学报2007，Vol.27Issue(10)：4157-4165,9.
中国西部3个亚高山森林土壤有机层和矿质层碳储量和生化特性
Carbon stock and biochemical properties in the organic layer and mineral soil under three subalpine forests in Western China
摘要
Abstract
The organic layer (OL) on the floor of three subalpine forests, dominated by spruce (Picea purpurea Masters) (SF), fir (Abies faxoniana Rehder & E. H. Wilson) (FF) and birch (Betula platyphylla Sukaczev) (BF) trees, respectively, was divided into a fresh litter layer (LL), semi-decomposed litter layer (FL) and decomposed litter layer (HL), and organic carbon (OC) stock, microbial biomass carbon (Cmic) and nitrogen (Nmic) and the activities of invertase, catalase, dehydrogenase and polyphenol oxidase were measured simultaneously in the OL and mineral soil (MS) in order to obtain an understanding of the status of the OC pool and biochemical properties at the interface between the soil and vegetation. The OC stock was 29.38 Mg hm-2±1.28 Mg hm-2 in the OL in SF, 22.7 Mg hm-2±1.12 Mg hm-2 in FF and 8.63 Mg hm-2±0.95 Mg hm-2 in BF, accounting for 62.2, 53.5 and 36.6% of the total OC stock, respectively. 92.8, 99.6 and 78.7% of the total OC in the SF, FF and BF forests were stored in the OL and humus layer, respectively. Regardless of the stand type, HL had the highest bacterial number, Cmic, Nmic and catalase activity, and FL had the highest numbers of fungal and actinomycetes and the highest activities of invertase, dehydrogenase and polyphenol oxidase. The vertical distribution patterns for microbial number, microbial biomass and enzyme activity imply that the OL is one of the most active interfaces between the soil and the vegetation.关键词
亚高山森林/碳库/微生物数量/微生物生物量/酶活性Key words
subalpine forests/ carbon pool/ microbial number/ microbial biomass/ enzyme activity分类
生物科学引用本文复制引用
杨万勤,冯瑞芳,张健,王开运..中国西部3个亚高山森林土壤有机层和矿质层碳储量和生化特性[J].生态学报,2007,27(10):4157-4165,9.基金项目
国家自然科学基金资助项目(30471378,90202010,30211130504) （30471378,90202010,30211130504）
国家"十一五"重大科技支撑计划资助项目(2006BAC01A11) （2006BAC01A11）
四川省重大应用基础研究计划资助项目 （）
四川省青年科技基金资助资助项目(07JQ0081) （07JQ0081）
四川农业大学人才引进资助项目 （）
