Application of Stable Isotope Techniques in Studies of Carbon and Nitrogen Biogeochemical Cycles of Ecosystem

查看全文 作　　者：SUN [1]Zhigao;MOU [1,2,3]Xiaojie;LI [4]Xinhua;WANG [1,3]Lingling;SONG [1,3]Hongli;JIANG [1,3]Huanhuan

机构地区：[1]Key Laboratory of Coastal Environment Processes of Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;[2]Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;[3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China;[4]Shandong Institute of Agriculture Sustainable Development, Jinan 250100, China

出　　处：《Chinese Geographical Science》索引2011年第21卷第2期,共20页

基　　金：Under the auspices of Knowledge Innovation Programs of Chinese Academy of Sciences (No. KZCX2-YW-223);National Natural Science Foundation of China (No. 40803023);Key Program of Natural Science Foundation of Shandong Province(No. ZR2010DZ001);Talents Foundation of Chinese Academy of Sciences (No. AJ0809BX-036) 摘　　要：Stable isotope techniques have been proved useful as tools for studying the carbon (C) and nitrogen (N) biogeochemical cycles of ecosystem. This paper firstly introduced the basic principles and the distribution characteristics of stable isotope, then reviewed the recent advances and applications of stable isotope in the C and N biogeochemical cycles of ecosystem. By applying the 13 C natural abundance technique, ecologists are able to understand the photosynthetic path and CO 2 fixation of plants, the CO 2 exchange and C balance status of ecosystem, the composition, distribution and turnover of soil organic C and the sources of organic matter in food webs, while by using the 13 C labeled technique, the effects of elevated CO 2 on the C processes of ecosystem and the sources and fate of organic matter in ecosystem can be revealed in detail. Differently, by applying the 15 N natural abundance technique, ecologists are able to analyze the biological N 2 -fixation, the N sources of ecosystem, the N transformation processes of ecosystem and the N trophic status in food webs, while by using the 15 N labeled technique, the sources, transformation and fate of N in ecosystem and the effects of N input on the ecosystem can be investigated in depth. The applications of both C and N isotope natural abundance and labeled techniques, combined with the elemental, other isotope ( 34 S) and molecular biomarker information, will be more propitious to the investigation of C and N cycle mechanisms. Finally, this paper concluded the problems existed in current researches, and put forward the perspective of stable isotope techniques in the studies on C and N biogeochemical cycles of ecosystem in the future. 关键词：生物地球化学循环同位素技术稳定同位素同位素应用生态系统生物固氮中碳二氧化碳浓度升高

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Application of Stable Isotope Techniques in Studies of Carbon and Nitrogen Biogeochemical Cycles of Ecosystem

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耦合文献(274)

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