学术
LI-6262CO2／H2O分析仪接气室法在草原群落蒸散量与CO2交换量测定中的应用
刘芳[1,2] 王炜[1] 朴顺姬[1] 王永利[3] 韩芳[3]
[1]内蒙古大学生态与环境科学系,呼和浩特010021 [2]内蒙古工业大学能源与动力工程学院环境工程系,呼和浩特010051 [3]内蒙古气象局,呼和浩特010051
摘 要:
植物群落蒸散量和CO2交换量的测定方法多种多样。该文以水分、CO2动态的区域性整合为目标，开创了一种新的、同时测定群落蒸散量和CO2交换量的方法——LI—6262CO2／H2O分析仪接气窒法。借助这种方法测定了内蒙古锡林河流域典型草原区群落蒸散量和CO2交换量，取得了较好的结果。该方法将群落的重要生态过程2蒸散与光合、呼吸作用的测定联系起来，也因此得到一系列表征群落特性的有用指标；同时该方法具有精度高、简便易携带、适于野外操作等特点，经进一步改进后可广泛用于草原、沙地及湿地植物群落的气体通量测定。对于精确研究草原区各种植物群落类型的水分利用、光合和呼吸特性及草原区植被在全球气候变化中的地位和作用等有重要的实用价值。[著者文摘]
文章出处:
《植物生态学报》-2007年31卷5期 -892-896页
栏目信息:
分 类 号:
NEW METHOD FOR MEASURING EVAPOTRANSPIRATION AND CO2 ABSORP- TION IN GRASSLAND COMMUNITIES USING LI-6262 CO2/H2O ANALYSER
LIU Fang, WANG Wei, PIAO Shun-Ji, WANG Yong-Li, HAN Fang（1.Department of Ecology and Environment Sciences, Inner Mongolia University, Huhhot 010021, China; 2.Department of Environment Engineering, School of Energy and Power Engineering, Inner Mongolia University of Technology, Huhhot 010051, China; 3.Inner Mongolia Meteorological Administration, Huhhot 010051, China）
Abstract:
Aims Our objective was to develop a new method for simultaneously measuring evapotranspiration and CO2 absorption in plant communities using the LI-6262 CO2/H2O analyzer for regional integration of water and CO2 dynamics. Methods Vie measured evapotranspiration and CO2 absorption of some plant communities in the typical steppe of the Xilin River Basin, China. Important findings Our method enabled us to concurrently respiration, the important ecological processes of communities measure evapotranspiration, photosynthesis and and therefore obtain a series of valuable measurements of community characteristics. Our method is precise, the instruments are easily portable, and the method is adaptable for plant communities of steppe, sand lands and wetlands. The method has important practical value for study of the impacts of global change on ecological functions of steppe.[著者文摘]
Key words:
evapotranspiration, CO2 absorption, LI-6262 CO2/H2O analyzer, typical steppe
基金资助:
国家自然科学基金重点项目（30330120）和国家“973”项目（G2000018604）感谢内蒙古大学王鑫厅、张绪美、刘小平、迟延艳、刘佳慧等硕士研究生在野外实验及室内数据处理中给予的帮助
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