Point pattern analysis of dominant populations in a degraded community in Leymus chinensis + Stipa grandis steppe in Inner Mongolia, China Effect of Planting Herbage on the Growth and Absorption,Utilization of 15N-urea of Apple Saplings Effect of Planting Herbage on the Growth and Absorption,Utilization of 15N-urea of Apple Saplings Effects of positive plant interactions on population dynamics and community structures: a review based on individual-based simulation models Accumulation and competition of nitrogen, phosphorus and potassium in cotton-based intercropping systems in Xinjiang, China Effect of Cluster Planting Pattern on Intraspecific Interactions of Cotton Analysis of forest reservation modes and development countermeasures Positive Interactions: Crucial Organizers in a Plant Community Interspecific competition and facilitation in wheat/soybean intercropping system Study on Neighbor Effects of Three Dominant Species in the Evergreen- deciduous Mixed Forest in Jiugongshan Natural Reserve Facilitation of wheat to phosphorus uptake by soybean in the wheat soybean intercropping Stipa tenacissima Does not Affect the Foliar δ13C and δ15N of Introduced Shrub Seedlings in a Mediterranean Semi-arid Steppe Effect of inoculation of arbuscular mycorrhizal fungi and Rhizobium on the P uptake in faba bean /maize intercropping system Root interactions:competition and facilitation Effects of nitrogen input on yields advantage and interaction of the maize and potato intercropping