Variation of Water-Use Efficiency of Leymus chinensis and Cleistogenes squarrosa in Different Plant Communities in Xilin River Basin, Nei Mongol Stable carbon isotope characteristics of some woody plants in warm temperate zone The gas exchange characteristics of four shrubs on the northern slope of Kunlun Mountain Effect of Enhanced UV-B Radiation on Growth, Yield and Stable Carbon Isotope Composition in Glycine max Cultivars The effects of Spartina alterniflora seaward invasion on soil organic carbon fractions,sources and distribution Indicative effect of the anatomical structure of plant photosynthetic organ on WUE in desert region Photosynthetic characteristics and their effect factors of Reaumuria soongorica on three geographical populations δ13C values of stem phloem water soluble sugars of Pinus massoniana and Cunninghamia lanceolata response to meteorological factors Changes of leaf photosynthetic characteristics and water use efficiency along tree height of 4 tree species Leaf δ13C of plants in different vegetation succession stages on karst hillslope of Northwest Guangxi, China Study on Stable Carbon Isotopic Composition of Populus nigra L.Gene Resource