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区域土壤盐渍化遥感监测研究综述
引用本文:关元秀,刘高焕. 区域土壤盐渍化遥感监测研究综述[J]. 遥感技术与应用, 2001, 16(1): 40-44
作者姓名:关元秀  刘高焕
作者单位:中国科学院地理科学与资源研究所,
摘    要:对国内外遥感监测土壤盐渍化发展情况作了介绍,对土壤盐渍化及其动态变化遥感监测方法进行了总结,数字图像处理将成为区域土壤盐渍化遥感监测研究的主要手段,土壤盐渍化是一个世界性的问题,应将遥感琢遥感图像处理的最新成果充分运用到盐渍土监测研究中,为盐渍土治理与农业可持续发展提供信息保障。

关 键 词:区域土壤盐渍化 动态变化 遥感监测
文章编号:1004-0323(2001)01-0040-05
修稿时间:2001-01-02

A Review of Regional SoilSalinization Monitoring by Remote Sensing
GUAN Yuan|xiu,LIU Gao|huan. A Review of Regional SoilSalinization Monitoring by Remote Sensing[J]. Remote Sensing Technology and Application, 2001, 16(1): 40-44
Authors:GUAN Yuan|xiu  LIU Gao|huan
Abstract:Globally, an estimated 9.5×108 hm2 of land are affected bysalinity and sodicity. Soil salinization is the major land degradation problem of the world. The information on saline soil is prerequisite for saline soil amelioration and sustainable development of agriculture. By virtue of synoptic view of large area in discrete bands of the electromagnetic spectrum, multi-spectral data acquired from spaceborne platforms, remote sensing has been found to be useful in detection, mapping and monitoring of salt-affected soils. The international and national development of soil salinization monitoring based on remote sensing is introduced. Overseas, satellite remote sensing has been used to monitor salt-affected soil since 1970's. Multi-spectral and multi-temporal data was been widely used in the 1980's. During the time, visual interpretation approach was generally used. Since the 1990's, data has been enriched. Research category becomes wider than before. But visual interpretation is still the major approach used to extract information on saline soil. In China, satellite remote sensing has been used to monitor saline soil since 1980's. It is 10 years latter than overseas. Fundamental technical, monetary and data handling limits act collectively to constrain the information extraction on saline soils. The methods of regional soil salinization monitoring are visual interpretation and digital image processing. The approaches of saline soil dynamic detecting are pixel-by-pixel comparison and post-classification comparison. The digital image processing will be the major means in the future. The progress achieved in remote sensing technique and digital image processing will greatly enhance the capability to monitor saline soil.
Keywords:Regional soil salinization   Dynamics   Monitoring by remote sensing
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