Comparative study on ecoregion and its classification systems between China and USA Current researches and prospects of phosphorus removal in constructed wetland Efficiency and kinetic process of nitrogen removal in a subsurface wastewater infiltration system (SWIS) Dynamic Study on the Values for Ecological Service Function of Pinus kesiya Forest in China Ecological Service Function Value Assessment of Yichun Forest Based on Ecological Niches Measurement Discussion on the Ecological Compensation Mechanism and Scheme of Rangeland Ecological function and developing tactics of agriculture in developed regions Evaluation of ecological service value of rice-wheat rotation ecosystem