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Responses of foliar δ¹³C in Sabina przewalskii and Picea crassifolia to altitude and its mechanism in the Qilian Mountains, China Effects of acidification and CaCO3 application on various forms of manganese in soils Selenium fractionation and bio-availability in some low-Se soils of central Jiangsu Province Identification of Organic or Conventional Lettuce by Nitrogen Isotope Identification of Organic or Conventional Lettuce by Nitrogen Isotope Effects of long-term fertilization on evolution of S forms in a red soil and a black soil. Soil nitrogen and phosphorus availability in forest ecosystems at different stages of succession in the central subtropical region Effect of Protein and Starch Contents on Wheat Dough Rheological Properties Influences of Potamogeton crispus L.on Phosphorus Status in Lake Sediments Diurnal variations of soil evaporation δ¹⁸O and factors affecting it in cropland in North China IDENTIFICATION OF ORGANICALLY AND CONVENTIONALLY PRODUCED CROPS BY NATURAL ¹⁵N ABUNDANCE METHOD Effect of Suining Tributary ecoremediation to all size-fractionated chlorophyll-a contents Effects of organic ligands on accumulation and fractionation of rare earth elements REEs in wheat Influence of long-term fertilization on phosphorus fertility of calcareous soil Ⅱ.Inorganic and organic phosphorus. Soil particle size fractionation with centrifugation method Effects of rhizobia on morphological distribution of Cu, Zn and Cd in soil Separation of polyphyllin from Rhizoma Paridis by foam fractionation technique Fractionation character and bioavailability of Cd, Pb, Zn and Ni combined pollution in oasis soil Responses of phytoplankton growth on nutrient enrichments in the northern South China Sea Combined application of chemical and organic fertilizers long-term increase physical proteetion of organic nitrogen in yellow paddy soil Polyethylene Glycol Fractionation Analysis of Low-Abundant Proteins in Magnolia sieboldii Seeds Separation of glycyrrhizic acid by intermittence foam fractionation Phosphorus speciation in sediment profile of Meiliang Bay, Taihu Lake by sequential fractionation and solution phosphorus-31 nuclear magnetic resonance spectroscopy Distribution characteristics of soil organic carbon and its physical fractions under the different land uses in Jinyun Mountain Responses of all size-fractionated chlorophyll-a contents to bioremediation in eutrophic water Transformation of Copper Speciation in Maize Rhizosphere