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稳定同位素在滨海湿地生态系统研究中的应用现状与前景

冯建祥1,黄敏参1,黄茜1,郭婕敏1,林光辉1,2**   

  1. (1厦门大学滨海湿地生态系统教育部重点实验室, 福建厦门 361005; 2清华大学地球系统科学研究中心、地球系统数值模拟教育部重点实验室, 北京 100084)
  • 出版日期:2013-04-10 发布日期:2013-04-10

Present status and application perspectives of stable isotopes in coastal wetland ecosystem research: A review.

FENG Jian-xiang1, HUANG Min-shen1, HUANG Qian1, GUO Jie-min1, LIN Guang-hui1,2**   

  1. (1Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361005, Fujian, China; 2Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, China)
  • Online:2013-04-10 Published:2013-04-10

摘要: 滨海湿地生态系统位于海陆交错地区,具有独特的生态系统特征、很高的服务功能和巨大的资源潜力,但同时也受到人为活动的严峻威胁。作为天然示踪物的稳定同位素为研究滨海湿地生态环境问题提供了重要手段。本文着重探讨了稳定同位素在滨海湿地动物食物源和食物网结构、滨海植物水分来源和利用效率、环境污染和生物入侵等全球变化对滨海湿地结构和功能的影响等方面的应用,指出了当前应用中存在的不足,如食物网研究中样品处理方式和富集度的确定,水分来源研究中水分抽提方法和仪器选择等,展望了稳定同位素在滨海湿地生态系统修复评价以及碳循环和温室气体排放研究中的应用-前景。

关键词: 侧根分支处, 相邻上级直根, 抗折特性

Abstract: The coastal wetland ecosystems in the ecotones of terrestrial and marine systems have unique ecological characteristics, high ecosystem service values, and plenty of natural resources, but are severely impacted by human activities. Stable isotopes, as natural tracers, have become the important tools in coastal wetland ecological and environmental research. This paper reviewed the applications of stable isotopes in researching the food sources and food web structures of wetland animals, the water sources and water use efficiency of coastal wetland plants, and the potential responses of coastal ecosystems to the environmental pollution, biological invasion, elevated CO2 concentration, and human activities. The deficiencies in the applications of stable isotopes in researching coastal wetland ecosystem, such as the sample treatment and trophic enrichment measurement in food web study, and the water extraction method and the selection of instruments in water source research were discussed, and some future directions in the applications of stable isotopes in coastal wetland ecosystem research, including the assessment of wetland ecological restoration and the carbon cycling and greenhouse gases emission were proposed.

Key words: lateral root branch, adjacent upper straight root, anti-fracture characteristics.