【摘要】 利用遥感技术与地理信息系统技术的结合,对重庆合川市的土壤侵蚀状况进行了时空变化研究。研究结果表明,合川市的土壤侵蚀状况在侵蚀面积和程度上都有不同程度的改善;土壤侵蚀具有时空差异大,侵蚀与水、热基本同期,侵蚀高峰超前于降水高峰的特点。更多还原

【Abstract】 The remote sensing technique was used in combination with the geographic information system (GIS) technique in a study to monitor the spatial and temporal changes in soil erosion in Hechuan, Chongqing. The results showed that soil erosion in the region studied was being alleviated, both in area and in extent. Soil erosion showed several characteristics: great difference in space and time; erosion occurs synchronously with water and heat and the peak-hour of soil erosion arrives before the rush-hour of raining.更多还原