Abstract: The study of multi-scale spatial pattern is important to comprehensively understand the changes of construction land. In this paper, the TM images in 1989, 2000, and 2009 were used to study the multi-scale pattern and its dynamic changes of construction land in Zhengzhou. From 1989 to 2009, the area of construction land in Zhengzhou increased rapidly, and the patch’s mean area showed a unipolar growing trend. The area of rural construction land increased more slowly than that of urban construction land. At the scale level 0-13 km, the area of construction land in urban core increased gradually, and the patches of the construction land had obvious connection and expansion. At the scale level 13-25 km, the landscape of construction land showed a process of clusterdispersioncluster; while at the scale level 25-58 km, this landscape showed a process of dispersion cluster. Spatially, the area of construction land in the east, north, and southwest of Zhengzhou increased rapidly, the landscape of rural construction land had a smaller variation degree than that of urban construction land, and the landscape of construction land in the middle, western, and northern parts of Zhengzhou had less change.  

Key words: litter decomposition, micronutrient, seasonal rainfall, subtropical evergreen broadleaved forest.