首页 | 本学科首页   官方微博 | 高级检索  
   检索      

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
引用本文: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.
作者姓名:杨万勤  冯瑞芳  张健  王开运
作者单位:1. 四川农业大学林学院,雅安,625014;中国科学院成都生物研究所,成都,610041
2. 四川农业大学林学院,雅安,625014
3. 中国科学院成都生物研究所,成都,610041
基金项目:国家自然科学基金;国家重大科技支撑计划;四川省重大应用基础研究计划项目;四川省青年科技基金;四川农业大学人才引进资助项目
摘    要:为了解土壤和植被界面的有机碳库和生化特性,分别将以云杉(Picea purpurea Masters)(SF)、冷杉(Abiesfaxoniana Rehder& E.H.Wilson)(FF)和白桦(Betulaplatyphylla Sukaczev)(BF)为优势树种的3个亚高山森林地表有机层(OL)分成新鲜凋落物层(LL)、半分解层(FL)和分解层(HL),并同步测定了有机层和矿质土壤层(MS)的有机碳(OC)储量、微生物生物量碳(Cmic)、微生物生物量氮(N~)及转化酶、过氧化氢酶、脱氢酶和多酚氧化酶活性。云杉林、冷杉林和白桦林土壤有机层的有机碳储量分别为29.38Mghm^-2±1.28Mghm^-2、22.7Mghm^-2±1.12Mghm^-2和8.63Mghm^-2±0.95Mghm^-2,分别为总有机碳储量的62.2%、53.5%和36.6%。云杉林、冷杉林和白桦林土壤有机层和腐殖质层分别储存了92.8%、99.6%和78.7%的有机碳。所有林型中,HL具有最高的细菌数量、Cmic和Nmic及过氧化氢酶活性,FL具有最高的真菌、放线菌数量及转化酶、脱氢酶和多酚氧化酶活性。微生物数量、微生物生物量和酶活性的垂直分布格局意味着OL是土壤和植被之间最活跃的生态界面之一。

关 键 词:亚高山森林  碳库  微生物数量  微生物生物量  酶活性
文章编号:1000-0933(2007)10-4157-09
收稿时间:2006/8/15 0:00:00
修稿时间:2006-08-15

Carbon stock and biochemical properties in the organic layer and mineral soil under three subalpine forests in Western China
YANG Wanqin,FENG Ruifang,ZHANG Jian and WANG Kaiyun.Carbon stock and biochemical properties in the organic layer and mineral soil under three subalpine forests in Western China[J].Acta Ecologica Sinica,2007,27(10):4157-4165.
Authors:YANG Wanqin  FENG Ruifang  ZHANG Jian and WANG Kaiyun
Institution:Faculty of Forestry, Sichuan Agricultural University, Ya'an 625014, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;Faculty of Forestry, Sichuan Agricultural University, Ya'an 625014, China;Faculty of Forestry, Sichuan Agricultural University, Ya'an 625014, China;Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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.
Keywords:subalpine forests  carbon pool  microbial number  microbial biomass  enzyme activity
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《生态学报》浏览原始摘要信息
点击此处可从《生态学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号