The Dynamic of Soil Nutrient under Forest and Grass Composite Pattern in Area of Conversion of Farmland to Forests Temporal and spatial variations of DOC, DON and their function group characteristics in larch plantations and possible relations with other physical-chemical properties Correlation between Spectrophotometric Absorbance of Soil Solution and Contents of Variable Carbon and Nitrogen in Larch Plantation Forests Effects of Dripping Fertigation on Soil Nitrogen Metabolism in Apple Orchard of Weibei Plateau STUDY ON ISOLATION, IDENTIFICATION AND BIOACTIVITY OF ALLELOCHEMICALS IN RHIZOSPHERE Effects of Chinese-fir mixing with N-fixing and non-N fixing tree species on forestland quality and forest-floor solution chemistry Acidity and Inorganic Nitrogen Concentrations in Soil Solution in Short-term Response to N Addition in Subtropical Forests Intensity of Pedochemical Processes in a Nudal Beech Ecosystem Soil solution chemistry and element budget in the forest ecosystem in Guangzhou ARSENIC IN SOIL SOLUTION AND ITS EFFECT ON THE GROWTH OF RICE(ORYZA SATIVA L.) Dissolved aluminum and organic carbon in soil solution under six tree stands in Lushan forest ecosystems THE EFFECTS OF TEMPERATURE ON THE NUTRIENT CONCENTRATIONS IN SOIL SOLUTION Dissolved organic carbon in soil solution of paludalfs udalfs in Mt. Lushan forest under impact of acid deposition