LAND COVER DYNAMICS OF DIFFERENT TOPOGRAPHIC CONDITIONS IN BEIJING Ecology suitability of Polygonum capitatum in Guizhou province based on topographical conditions Factors affecting soil organic carbon density in Betula albo-sinensis forests on the southern slope of the Qinling Mountains A Study on the Classification of the Plant Functional Types Based on the Topographical Pattern of Plant Distribution Numerical Classification and Ordination of Pine and Oak Mixed Forest Communities in the Middle Part of Qinling Mountains Effect of topographical factors on podophyllotoxin content in Sinopodophyllum hexandrum and study on ecological suitability An Analysis of the Topographical Pattern in the Chief Woody Species at Dalaoling Region, the Three Gorges Estimation of topographical factors in revised universal soil loss model based on maximum upstream flow path. LAND COVER CLASSIFICATION OF REMOTELY SENSED IMAGERY USING A METHOD BASED ON TOPOGRAPHICAL RESTRICTIVE FEATURES: A CASE STUDY OF THE JINHE WATERSHED THE INFLUENCE OF TOPOGRAPHICAL FACTORS ON THE INVASION OF THE ALIEN SPECIES, EUPATORIUM ADENOPHORUM Gap Related Disturbance in Mixed Mountain Forests at Mt. Dalaoling in the Three Gorges ¢ò. Topographic Patterns Analysis of effect of topographical conditions on content of total alkaloid in Coptidis Rhizoma in Chongqin, China