Microbiotic soil crust──a research forefront in desertification-prone areas Analysis on the landscape changes of the Xiaoxiangling Mountains in Sichuan Province during approximately 30 years Landscape responses to changes in water levels at Poyang Lake wetlands Landscape changes and ecological reconstruction in Minqin Huqu oasis Landscape changes of typical agricultural oasis in arid regions and its driving factors Landscape spatial changes in Shenzhen and their driving factors Forest landscape change and its driving force during past ten years in Bilahe forest region,Inner Mongolia Studies on Landscape Classification and Changes Based on Forest Resource Inventory Data of Jingouling Forest Farm