Abstract: On the basis of land classified information and ecological background information in the Chinese resources & environment database, the ecological environmental background index (QIN-DEX) and the used degree index of land resources (UINDEX) were used, the formulas of QIN-DEX and UINDEX are following ,Where :Q is degree of ecological background ;A, is area of farm land ; S, is area of adminis-tration.Based on QINDEX and UINDEX , the relational coefficient formulas are following :then, the relational method, the sample strip analyses method and the trend-face anal-yses method were adopted, the trend-face analyses formula is following: where; zis trend value; a₀a₁a₂,......,a_n are coefficients.

Key words: land resources, quality index of ecological environmental background (QINDEX), used degree index of land resources (UINDEX)