3S技术在水土流失动态变化分析中的应用

Application of 3S Technology in Dynamic Change Analysis of Soil and Water Loss

利用3S技术对陕西境内渭河流域水土流失动态变化进行了研究。经过对渭河流域1998年、2003年、2008年三个年份水土流失状况进行及时、高效、准确、周期性水土流失动态变化分析,发现渭河流域的水土流失状况从1998年到2008年这10年间有变缓和的趋势,但局部地区也有所恶化。本研究可以为生态环境监测与保护提供依据,对水土保持研究具有重要意义。

Based on 3S technology, the dynamic change of soil and water loss in Weihe Basin of Shaanxi Province is studied here. After the timely, efficiently, accurately, cyclically dynamic analysis of Weihe Basin in 1998, 2003 and 2008, it is found that the status of soil and water loss in Weihe Basin from 1998 to 2008 has become better gradually, while there are also some areas which have deteriorated. This research could provide a precise basis for ecological envi- ronment monitoring and protection, and play a significant role in the study of water and soil conservation.