Dynamics of ecological landscape pattern and its affecting factors in desert-oasis in Fukang,Xinjiang Relationship between structural component biomass of reed population and ground water depth in desert oasis Sap flow of Gansu poplar in farmland shelter forest during the growing season in desert oasis Climate characteristic of seasonal variation and its influence on annual growth period of populus euphratica Oliv in Hexi Corridor in recent 55 years Responses of Nitraria sphaerocarpa Maxim. population to disturbance of blown sand in the edge of Desert Oasis Assessment of Environmental Capacity and Environmental Impact Assessment in Ejina Oasis Analysis of distribution and potentials of agricultural and natural resources of Shihezi Desert Oasis