摘要
阐述应用ＲＳ和ＧＩＳ相结合的方法在西藏中部地区进行土壤侵蚀动态监测研究的方法和流程，建立了土壤侵蚀分类系统和强度分析模型，分别编制１９９０年和１９９５年的土壤侵蚀强度图。根据１９９０年和１９９５年两个时相的土壤侵蚀动态监测分析表明，通过兴修水利，改造中低产田、草场和植树造林等水土保持工程和生物措施，使河谷平原等区的土壤侵蚀强度均有明显的下降趋势，有助于开发区生态环境沿着良性循环的轨道发展。
Applying RS and GIS,the method and order of dynamic monitoring of soil erosion were expounded in central Tibet. Classifical system and intensity analysis model of soil erosion are founded, and maps of soil erosion intensity of 1990 and 1995 are composed respectively. Comparson of dynamic monitoring made between 1990 and 1995 shows that biological measures and soil and water conservation engineering, such as irrigating,improving low and middle producing yields and grass fields have remarkably dropped off the soil erosion intensity in riverside area and they ensure the good development of ecological environment in exploitation region.
基金
西藏自治区政府项目
