Suitable habitat for the Achnatherum splendens community in typical steppe region of Inner Mongolia EFFECTS OF SITE CONDITIONS ON MINERAL ELEMENT CONTENTS IN THE BARK OF WINGCELTIS (PTEROCELTIS TATARINOWII) Effects of simulated acid rain on soil respiration in a monsoon evergreen broad-leaved forest at Dinghushan Nature Reserve Effect of acidic rhizosphere fertilizer on the soil pH and Fe availability of calcareous soil Response of leaf litter decomposition of two dominant trees to simulated acid rain in southern China ON THE FACTORS RESTRICTIVE TO MERMITHID NEMATODE OF PLANTHOPPERS IN RICE FIELD Variation Trends of Soil Moisture and Salinity During the Growth Season of the Wild Apocynum venentum L. in West Jinlin