The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform

Wu Jun-e - One of the best experts on this subject based on the ideXlab platform.

  • Application of Stable Isotope Techniques in the Study of Plant Water Sources and Use Efficiency
    Journal of Southwest Forestry University, 2014
    Co-Authors: Wu Jun-e
    Abstract:

    This paper described the application of Stable hydrogen,carbon and oxygen Isotopes Techniques in tracing sources of plant water and water use efficiency. Since the process that plant roots uptake water is non-fractionating,plant xylem water has the same composition of Stable hydrogen and oxygen Isotopes as soil water utilized by the plant. By analyzing the composition of hydrogen and oxygen Isotopes of plant xylem water and potential sources of water,we could quantitatively determine the contributions of the sources to plants. For the study of water use efficiency,there were many researches showed that the composition of Stable carbon Isotopes of leaves can be an indirect indicator of plant water use efficiency. Photosynthesis is one of the most significant processes of carbon isotope fractionation in nature. So,Stable carbon Isotopes Techniques had become the best way to study the long-term water use efficiency of plant leaves presently. As a safe tracer material,Stable Isotopes Technique will help people to understand the plant's ecophysiological process. Anyway,with the continuous improvement of Techniques,Stable isotope Techniques will be widely used in many areas of ecology.

Cao Yan - One of the best experts on this subject based on the ideXlab platform.

  • review and perspective on hydrogen Stable Isotopes Technique in tracing plant water sources researches
    Acta Ecologica Sinica, 2002
    Co-Authors: Cao Yan
    Abstract:

    This paper described the principle and methods of hydrogen Stable isotope analyses, and the typical case studies of δD analyses applied to plant water sources researches. The hydrogen isotope composition of source water and plant water can be used to analyze patterns of plant-water use from both a short-term and a long-term perspective and across a broad spectrum of community types and environments, even to partition quantitatively the contribution of different water sources to the plant water uptake in plants such as white pines, desert plants, riparian trees, and coastal plants. The analysis of δD can also be used in studies of plant-plant interactions. In addition, there is also great perspective in application of hydrogen Stable Isotopes analysis to other ecological research such as paleoclimate, pathways of photosynthesis, physiological ecology of animal and food chain.

Zhang Yu-cui - One of the best experts on this subject based on the ideXlab platform.

  • Application of Hydrogen and Oxygen Stable Isotopes Technique in the Water Depletion of Ecosystems
    2012
    Co-Authors: Zhang Yu-cui
    Abstract:

    Stable Isotopes of oxygen and hydrogen play an important role in the research on water transport and exchange.The composition of deuterium(D or 2H) and oxygen 18(18O) in water is very Stable,which would not change with time unless fractionation happens.Therefore,they are good fingerprint of water movement.The fractional process of Stable isotope is the key for tracing water cycling and transfer.Fractionation leads to the heavy Isotopes enrichment of water evaporation vapor.And isotope composition of plant transpiration vapor is similar to the soil water absorbed by the roots except some halophilous plants.Measurement technologies for the isotope composition are mass-spectrometric method and laser method.Water depletion structure was partitioned by the combination of isotopic method and other method like the eddy covariance system.The plant transpiration accounted for about 6%-90% in different ecosystems or for different growth periods.Isotope compositions of different water sources were compared for the judgment of main root uptake layers.The application of hydrogen,oxygen and carbon Isotopes in the leaf water-carbon coupling research revealed that 18O was enriched because of the photosynthesis and transpiration.As the composition of carbon dioxide and water,isotope compositions of 18O,2H and 13C in leaves could also be used to show the change of water use efficiency which was calculated by the carbon accumulation and water depletion.There still existed some problems in the application of this Technique like the upscaling and impact factors analysis while some possible improvements were discussed.

Mariela Akie Okino Mituo - One of the best experts on this subject based on the ideXlab platform.

  • poultry offal meal traceability in meat quail tissues using the Technique of Stable carbon 13c 12c and nitrogen 15n 14n Isotopes
    Brazilian Journal of Poultry Science, 2008
    Co-Authors: C Mori, Edivaldo Antonio Garcia, Carlos Ducatti, Juliana Celia Denadai, Rosana Gottmann, Mariela Akie Okino Mituo
    Abstract:

    Studies on the detection of animal by-products in poultry meat are rare, and non-existent on quail meat. This study aimed at detectiong increasing levels of poultry offal meal (POM) in quail meat, using carbon (13C/12C) and nitrogen (15N/14N) Stable Isotopes Technique. Sixty four on-day-old male quails derived from a commercial farm were randomly distributed into seven different groups, which were fed experimental diets containing 0, 1.5, 3.0, 4.5, 6.0, 7.5, and 15% of POM. Diets were formulated to contain equal energy, protein, and amino acid levels. Four individuals per treatment were sacrificed at 42 days of age for breast muscle (Pectoralis major), keel, and tibia collection, which were subsequently submitted to analyses. Isotopic δ13C and δ15N enrichment was observed in all analyzed tissues, with the lowest detection level of 3% dietary inclusion of poultry offal meal.

C Mori - One of the best experts on this subject based on the ideXlab platform.

  • poultry offal meal traceability in meat quail tissues using the Technique of Stable carbon 13c 12c and nitrogen 15n 14n Isotopes
    Brazilian Journal of Poultry Science, 2008
    Co-Authors: C Mori, Edivaldo Antonio Garcia, Carlos Ducatti, Juliana Celia Denadai, Rosana Gottmann, Mariela Akie Okino Mituo
    Abstract:

    Studies on the detection of animal by-products in poultry meat are rare, and non-existent on quail meat. This study aimed at detectiong increasing levels of poultry offal meal (POM) in quail meat, using carbon (13C/12C) and nitrogen (15N/14N) Stable Isotopes Technique. Sixty four on-day-old male quails derived from a commercial farm were randomly distributed into seven different groups, which were fed experimental diets containing 0, 1.5, 3.0, 4.5, 6.0, 7.5, and 15% of POM. Diets were formulated to contain equal energy, protein, and amino acid levels. Four individuals per treatment were sacrificed at 42 days of age for breast muscle (Pectoralis major), keel, and tibia collection, which were subsequently submitted to analyses. Isotopic δ13C and δ15N enrichment was observed in all analyzed tissues, with the lowest detection level of 3% dietary inclusion of poultry offal meal.