CHANGES OF PROTECTIVE ENZYME ACTIVITY IN PYROLA DAHURICA BEFORE AND AFTER SNOW COVER IN NORTHEASTERN CHINA Monitoring on spatial and temporal changes of snow cover in the Heilongjiang Basin based on remote sensing. Effects of snow cover on the decomposition and nutrient dynamics of Sibiraea angustata leaf litter in western Sichuan plateau, Southwest China. Effects of seasonal snow cover on soil nitrogen transformation in alpine ecosystem: A review. The analysis of snow information from 1979 to 2007 in Qinghai-Tibetan Plateau Litter decomposition of Rhododendron lapponicum in alpine timberline ecotone Effects of snow cover on acid-soluble extractive and acid-insoluble residue during foliar litter decomposition in the alpine forest Effects of snow cover and soil moisture on CO2 and N2O fluxes from typical semi-arid grassland soil subjected to freeze-thaw cycles Changes in contents of MDA and osmoregulatory substances during snow cover for Pyrola dahurica Soil nitrogen dynamics and productivity of snowpack Sanguisorba sitchensis community in alpine tundra of Changbai Mountain, China Effect of seasonal snow cover on litter decomposition in alpine forest