摘要
以大兴安岭地区为研究区,应用"北京一号"卫星数据与同期TM数据进行交叉辐射定标,计算大兴安岭地区植被覆盖度,建立大兴安岭地区土壤侵蚀空间信息数据库。以修正后的通用土壤流失方程(RUSLE)为理论基础,结合地面调查,建立土壤侵蚀知识库,通过构建空间信息与知识库耦合的土壤侵蚀监测方法,对大兴安岭地区的土壤侵蚀强度进行分级。结果检验表明,该方法具有较高的可靠性,"北京一号"能够满足中等分辨率的土壤侵蚀动态监测要求,取得的"北京一号"卫星影像定标参数具有一定的参考价值。
We do the cross radiation correction with the RS data of period, and calculate the vegetation coverage degree in the area of Da BJ-1 and TM data at the corresponding Hingganling Mts, establish the soil ero- sion spatial information database of this area. Based on the RUSLE theoretically, with the ground investigation, we established soil erosion repository, construct the soil erosion monitoring method coupling the spatial information and repository, g the intensity of soil erosion in Da Hin g Mts. The tested results indicated that the method we introduced has a better reliability, and B J-1 can meet the demand of dynamic soil erosion monitoring. The obtained calibration parameters of BJ-1 has a certain reference value.
出处
《中国水土保持科学》
CSCD
2008年第3期13-17,23,共6页
Science of Soil and Water Conservation
基金
国家自然科学基金“岸边缓冲带对非点源污染控制效应的遥感解析”(40671123)
北京市重点实验室共建项目“北京市饮用水安全评价与预警空间信息技术研究”(000-105803)
