2Miyawaki A. Vegetation ecology and creation of new environment. Tokai University, Japan, 1987,357 - 376.
3Ohsawa M, Da Liangjun. Integrated studies in urban ecosystems as the basis of urban planning( Ⅲ ). Chiba University, Chiba, 1988, 137- 142.
4Da Liangjun, Ohsawa M. Abandoned pine-plantation succession and the influence of pine massdieback in the urban landscape of Chiba, Central Japan. Jpn J Eco1,1992,42:81-93.