Soybean leaf area index retrieval with UAV (unmanned aerial vehicle) remote sensing imagery Advance in simulation study on plant surface temperature REVIEW OF SPATIAL AND TEMPORAL VARIATIONS OF SOIL RESPIRA- TION AND DRIVING MECHANISMS Analysis and Simulation of Impact of Light and Temperature on Rice Tillering Effects of different planting modes on the soil permeability of sloping farmlands in purple soil area. AN EMPIRICAL MODEL DESCRIBING NATURAL THINNING PROCESS OF PLANT POPULATION AN EMPIRICAL MODEL TO DESCRIBE YIELD-DENSITY RELATIONSHIPS PRECISION COMPARISON OF THE EROSION RATES DERIVED FROM ~(137)Cs MEASUREMENTS MODELS WITH PREDICTIONS BASED ON EMPIRICAL RELATIONSHIP