PARADIGM SHIFT IN ECOLOGY: AN OVERVIEW Two methods for measuring the changes in patch-number and area of mangrove driven by various factors through different ways Role of clonal growth of the rehizomatous grass Psammochloa villosa in patch dynamics of Mu Us sandy land APPLICATION OF THE PRINCIPLES OF LANDSCAPE ECOLOGY ON CONSERVATION BIOLOGY The Forest Cycle and Tree Species Diversity Dynamics in a Tropical Montane Rain Forest of Hainan Island ,South China