Characteristics of production and quality of peanut in Huang-Huai-Hai region Studies on the spacial distribution pattern of Lygus lucortum Mey er-Dur‘s over winter eggs in jujube trees Characteristics of Biomass,Carbon Accumulation and Its Spatial Distribution in Cunninghamia lanceolata Forest Ecosystem in Low Subtropical Area The effect of planted Caragana density on the spatial distribution of soil nutrients in desert steppe