9Wosten J H M, Lilly A, Nemes A and Le Bas C. Develop2 ment and use of a database of hydraulic properties of Euro2 pean soils[ J]. Geoderma, 1999,90 : 169 - 185.
10Martin F C, Baggett T, Wolfe T and Mita R. Using sam2 piing theory to build a more universal forest vegetation data-base [ J ]. Computers and Electronics in Agriculture, 2000, 25:119-132.
