Stable Isotope Studies of Crop Carbon and Water Relations:A Review  

作　　者：ZHANG Cong-zhi ZHANG Jia-bao ZHAO Bing-zi ZHANG Hui HUANG Ping 

机构地区：[1]State Experimental Station of Agro-Ecosystem in Fengqiu/State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P.R.China [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049, P.R.China

出　　处：《Agricultural Sciences in China》2009年第5期578-590,共13页中国农业科学（英文版）

基　　金：supported by the National Basic Re-search Program of China (973 Program) (2005CB121103);the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW-406;KSCX1-YW-09-05)

摘　　要：Crop carbon and water relations research is important in the studies of water saving agriculture, breeding program, and energy and material cycles in soil plant atmosphere continuum （SPAC）. The purpose of this paper is to review the current state of knowledge on stable isotopes of carbon, oxygen, and hydrogen in the research of crop carbon and water relations, such as carbon isotope discrimination （△^13C） during carbon fixation process by photosynthesis, application of △^13C in crop water use efficiency （WUE） and breeding programs, oxygen isotope enrichment during leaf water transpiration, CO2 fixation by photosynthesis and release by respiration, application of hydrogen isotope composition （619） and oxygen isotope composition （6180） for determination of water source used by a crop, stable isotope coupling Keeling plot for investigating the carbon and water flux in ecosystem, energy and material cycle in SPAC and correlative integrative models on stable isotope. These aspects contain most of the stable isotope researches on crop carbon and water relations which have been widely explored internationally while less referred in China. Based on the reviewed literatures, some needs for future research are suggested.Crop carbon and water relations research is important in the studies of water saving agriculture, breeding program, and energy and material cycles in soil plant atmosphere continuum （SPAC）. The purpose of this paper is to review the current state of knowledge on stable isotopes of carbon, oxygen, and hydrogen in the research of crop carbon and water relations, such as carbon isotope discrimination （△^13C） during carbon fixation process by photosynthesis, application of △^13C in crop water use efficiency （WUE） and breeding programs, oxygen isotope enrichment during leaf water transpiration, CO2 fixation by photosynthesis and release by respiration, application of hydrogen isotope composition （619） and oxygen isotope composition （6180） for determination of water source used by a crop, stable isotope coupling Keeling plot for investigating the carbon and water flux in ecosystem, energy and material cycle in SPAC and correlative integrative models on stable isotope. These aspects contain most of the stable isotope researches on crop carbon and water relations which have been widely explored internationally while less referred in China. Based on the reviewed literatures, some needs for future research are suggested.

关 键 词：carbon fixation CROP REVIEW stable isotopes water relations 

分 类 号：S274.1[农业科学—农业水土工程] P597.2[农业科学—农业工程]