The Effects of Compound Fertilizer Made From Municipal Sewage Sludge Compost on N P K and Heavy Metals Uptake of Wheat Quantitative Measurement of Nutritive Relationship of the Food Chain:Rice plant-leafhoppers-spiders by the Fluorescence Labeling Method The Vegetation Restoration and Reconstruction of Different Types of Degraded Barren Ecosystems In Jiangxi Nutrient Characteristics of Hydrological Process in Young Second-rotation Chinese Fir Plantations Analysis on β diversity of plant communities on northern slope of Changbai Mountain Assessment of Regional Sustainability and Its Application in Wulian County of Shandong Province Changes of Root Exudates to Cadmium Stress in Wheat (Triticum aestivm L.) The Spatial Differentiation Structure and Weakness Assessment of Ecotone Cretan Brake (Pteris cretica L.): an Arsenic-accumulating Plant Vegetation Science and Vector Analysis Effect of different VAMF on red clover(Trifolium pratense L.) in utilizing organic phosphorus