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奈曼地区的沙漠化以固定沙丘的活化为特征。研究利用陆地卫星资料监测地被物和土地利用变化的方法以分析沙漠化的进展。天然植被、结构和土壤红度指数对分析沙漠化现状及发展趋势很有效。研究证实 ,典型区的沙漠化程度有明显变化 ;对居民区 ,公路及铁路沿线附近地区的土地管理比较重视 ,正在对沙漠化土地进行改良。应用上述方法可以分析沙漠化现状及发展趋势但不能确定其面积的变化。其次根据调查分类提出了地被物和土地利用变化的监测法。此法要求提供一年中两次不同时间的数据。文中还分析使用此法的可能性。最后 ,根据陆地卫星红色谱带反射率与实测生物之间的高度相关性可估算草地的生物量并得出结论 ,从奈曼北部到中部的大部分地区都处于过度放牧状态。
Desertification in the Naiman area is characterized by the activation of fixed sand dunes. To study ways to monitor changes in land cover and land use using land-based satellite data to analyze desertification progress. The natural vegetation, structure and soil redness index are very effective in analyzing the status quo and development trend of desertification. The study confirmed that the degree of desertification in the typical areas has changed significantly; land management in residential areas, highways and railways is paying more attention to land degradation, and desertification land is being improved. The above method can be used to analyze the status quo and development trend of desertification but can not determine the change of its area. Secondly, based on the survey classification, the monitoring methods of the land cover and land use change are proposed. The law requires that data be provided at two different times of the year. The article also analyzes the possibility of using this method. Finally, the biomass of grasslands can be estimated from the high correlation between the terrestrial satellite red band reflectance and the measured organisms and concluded that most of the area from northern Neiman to the middle is overgrazed.