关键词: N有效性, 细根, 根解剖结构, 根形态, 菌根

Abstract: To explore the variations of three-dimensional architecture landscape is of significance in researching urban three-dimensional landscape. Taking the building’s threedimensional information of Tiexi District of Shenyang, Northeast China in 1997, 2002, 2005, and 2008 as the basic data, an index system including building’s height, density, volume and configuration, distribution evenness, and space crowded degree was established to evaluate the three-dimensional architecture landscape, and its spatiotemporal variations were studied at district, functional zone, and gradient transect scales. From 1997 to 2008, the buildings in the District were growing in vertical direction and shrinking in horizontal direction, with the architectural space being increasingly in uneven distribution, and the average volume, floor area ratio, and space crowded degree being gradually increased. At functional zone scale, the buildings average height, average volume, average coverage ratio, average floor area ratio, and space crowded degree were the least in residential districts, but the largest in commercial areas. The values of the variation coefficient of building’s height and the coefficient of building’s average configuration were the least in commercial areas but the largest in industrial areas. At gradient transect, the differences of the building’s use types decided the variation characteristics of the threedimensional architecture landscape.

Key words: N availability, fine root, root anatomy, root morphology, mycorrhiza.